Merge pull request #8666 from dgquintas/rr_fixall

Fixed wrong connectivity status updates for RR
diff --git a/Makefile b/Makefile
index 351abda..b5ee449 100644
--- a/Makefile
+++ b/Makefile
@@ -6994,6 +6994,7 @@
     test/core/end2end/tests/empty_batch.c \
     test/core/end2end/tests/filter_call_init_fails.c \
     test/core/end2end/tests/filter_causes_close.c \
+    test/core/end2end/tests/filter_latency.c \
     test/core/end2end/tests/graceful_server_shutdown.c \
     test/core/end2end/tests/high_initial_seqno.c \
     test/core/end2end/tests/hpack_size.c \
@@ -7079,6 +7080,7 @@
     test/core/end2end/tests/empty_batch.c \
     test/core/end2end/tests/filter_call_init_fails.c \
     test/core/end2end/tests/filter_causes_close.c \
+    test/core/end2end/tests/filter_latency.c \
     test/core/end2end/tests/graceful_server_shutdown.c \
     test/core/end2end/tests/high_initial_seqno.c \
     test/core/end2end/tests/hpack_size.c \
diff --git a/src/core/ext/client_channel/client_channel.c b/src/core/ext/client_channel/client_channel.c
index 1cce3bc..b66fed4 100644
--- a/src/core/ext/client_channel/client_channel.c
+++ b/src/core/ext/client_channel/client_channel.c
@@ -641,7 +641,7 @@
     grpc_subchannel_call *subchannel_call = NULL;
     grpc_error *new_error = grpc_connected_subchannel_create_call(
         exec_ctx, calld->connected_subchannel, calld->pollent, calld->path,
-        calld->deadline, &subchannel_call);
+        calld->call_start_time, calld->deadline, &subchannel_call);
     if (new_error != GRPC_ERROR_NONE) {
       new_error = grpc_error_add_child(new_error, error);
       subchannel_call = CANCELLED_CALL;
@@ -894,7 +894,7 @@
     grpc_subchannel_call *subchannel_call = NULL;
     grpc_error *error = grpc_connected_subchannel_create_call(
         exec_ctx, calld->connected_subchannel, calld->pollent, calld->path,
-        calld->deadline, &subchannel_call);
+        calld->call_start_time, calld->deadline, &subchannel_call);
     if (error != GRPC_ERROR_NONE) {
       subchannel_call = CANCELLED_CALL;
       fail_locked(exec_ctx, calld, GRPC_ERROR_REF(error));
diff --git a/src/core/ext/client_channel/subchannel.c b/src/core/ext/client_channel/subchannel.c
index a5d7c0d..a148b2a 100644
--- a/src/core/ext/client_channel/subchannel.c
+++ b/src/core/ext/client_channel/subchannel.c
@@ -702,15 +702,15 @@
 
 grpc_error *grpc_connected_subchannel_create_call(
     grpc_exec_ctx *exec_ctx, grpc_connected_subchannel *con,
-    grpc_polling_entity *pollent, grpc_mdstr *path, gpr_timespec deadline,
-    grpc_subchannel_call **call) {
+    grpc_polling_entity *pollent, grpc_mdstr *path, gpr_timespec start_time,
+    gpr_timespec deadline, grpc_subchannel_call **call) {
   grpc_channel_stack *chanstk = CHANNEL_STACK_FROM_CONNECTION(con);
   *call = gpr_malloc(sizeof(grpc_subchannel_call) + chanstk->call_stack_size);
   grpc_call_stack *callstk = SUBCHANNEL_CALL_TO_CALL_STACK(*call);
   (*call)->connection = con;  // Ref is added below.
   grpc_error *error =
       grpc_call_stack_init(exec_ctx, chanstk, 1, subchannel_call_destroy, *call,
-                           NULL, NULL, path, deadline, callstk);
+                           NULL, NULL, path, start_time, deadline, callstk);
   if (error != GRPC_ERROR_NONE) {
     const char *error_string = grpc_error_string(error);
     gpr_log(GPR_ERROR, "error: %s", error_string);
diff --git a/src/core/ext/client_channel/subchannel.h b/src/core/ext/client_channel/subchannel.h
index 93bd72d..10bae62 100644
--- a/src/core/ext/client_channel/subchannel.h
+++ b/src/core/ext/client_channel/subchannel.h
@@ -111,8 +111,8 @@
 /** construct a subchannel call */
 grpc_error *grpc_connected_subchannel_create_call(
     grpc_exec_ctx *exec_ctx, grpc_connected_subchannel *connected_subchannel,
-    grpc_polling_entity *pollent, grpc_mdstr *path, gpr_timespec deadline,
-    grpc_subchannel_call **subchannel_call);
+    grpc_polling_entity *pollent, grpc_mdstr *path, gpr_timespec start_time,
+    gpr_timespec deadline, grpc_subchannel_call **subchannel_call);
 
 /** process a transport level op */
 void grpc_connected_subchannel_process_transport_op(
diff --git a/src/core/ext/lb_policy/grpclb/grpclb.c b/src/core/ext/lb_policy/grpclb/grpclb.c
index 44ac9a0..d8ef0c8 100644
--- a/src/core/ext/lb_policy/grpclb/grpclb.c
+++ b/src/core/ext/lb_policy/grpclb/grpclb.c
@@ -761,17 +761,24 @@
   if (glb_policy->rr_policy) {
     GRPC_LB_POLICY_UNREF(exec_ctx, glb_policy->rr_policy, "glb_shutdown");
   }
-  if (glb_policy->started_picking) {
-    if (glb_policy->lb_call != NULL) {
-      grpc_call_cancel(glb_policy->lb_call, NULL);
-      /* lb_on_server_status_received will pick up the cancel and clean up */
-    }
-  }
   grpc_connectivity_state_set(
       exec_ctx, &glb_policy->state_tracker, GRPC_CHANNEL_SHUTDOWN,
       GRPC_ERROR_CREATE("Channel Shutdown"), "glb_shutdown");
+  /* We need a copy of the lb_call pointer because we can't cancell the call
+   * while holding glb_policy->mu: lb_on_server_status_received, invoked due to
+   * the cancel, needs to acquire that same lock */
+  grpc_call *lb_call = glb_policy->lb_call;
+  glb_policy->lb_call = NULL;
   gpr_mu_unlock(&glb_policy->mu);
 
+  /* glb_policy->lb_call and this local lb_call must be consistent at this point
+   * because glb_policy->lb_call is only assigned in lb_call_init_locked as part
+   * of query_for_backends_locked, which can only be invoked while
+   * glb_policy->shutting_down is false. */
+  if (lb_call != NULL) {
+    grpc_call_cancel(lb_call, NULL);
+    /* lb_on_server_status_received will pick up the cancel and clean up */
+  }
   while (pp != NULL) {
     pending_pick *next = pp->next;
     *pp->target = NULL;
@@ -955,9 +962,10 @@
                                          grpc_error *error);
 static void lb_on_response_received(grpc_exec_ctx *exec_ctx, void *arg,
                                     grpc_error *error);
-static void lb_call_init(glb_lb_policy *glb_policy) {
+static void lb_call_init_locked(glb_lb_policy *glb_policy) {
   GPR_ASSERT(glb_policy->server_name != NULL);
   GPR_ASSERT(glb_policy->server_name[0] != '\0');
+  GPR_ASSERT(!glb_policy->shutting_down);
 
   /* Note the following LB call progresses every time there's activity in \a
    * glb_policy->base.interested_parties, which is comprised of the polling
@@ -1010,7 +1018,9 @@
 static void query_for_backends_locked(grpc_exec_ctx *exec_ctx,
                                       glb_lb_policy *glb_policy) {
   GPR_ASSERT(glb_policy->lb_channel != NULL);
-  lb_call_init(glb_policy);
+  if (glb_policy->shutting_down) return;
+
+  lb_call_init_locked(glb_policy);
 
   if (grpc_lb_glb_trace) {
     gpr_log(GPR_INFO, "Query for backends (grpclb: %p, lb_call: %p)",
diff --git a/src/core/ext/transport/chttp2/transport/parsing.c b/src/core/ext/transport/chttp2/transport/parsing.c
index b9c4051..5efb497 100644
--- a/src/core/ext/transport/chttp2/transport/parsing.c
+++ b/src/core/ext/transport/chttp2/transport/parsing.c
@@ -471,7 +471,8 @@
                 grpc_mdstr_as_c_string(md->value));
         *cached_timeout = gpr_inf_future(GPR_TIMESPAN);
       }
-      grpc_mdelem_set_user_data(md, free_timeout, cached_timeout);
+      cached_timeout =
+          grpc_mdelem_set_user_data(md, free_timeout, cached_timeout);
     }
     grpc_chttp2_incoming_metadata_buffer_set_deadline(
         &s->metadata_buffer[0],
diff --git a/src/core/lib/channel/channel_stack.c b/src/core/lib/channel/channel_stack.c
index 98ee034..999ad5f 100644
--- a/src/core/lib/channel/channel_stack.c
+++ b/src/core/lib/channel/channel_stack.c
@@ -162,7 +162,8 @@
     grpc_exec_ctx *exec_ctx, grpc_channel_stack *channel_stack,
     int initial_refs, grpc_iomgr_cb_func destroy, void *destroy_arg,
     grpc_call_context_element *context, const void *transport_server_data,
-    grpc_mdstr *path, gpr_timespec deadline, grpc_call_stack *call_stack) {
+    grpc_mdstr *path, gpr_timespec start_time, gpr_timespec deadline,
+    grpc_call_stack *call_stack) {
   grpc_channel_element *channel_elems = CHANNEL_ELEMS_FROM_STACK(channel_stack);
   grpc_call_element_args args;
   size_t count = channel_stack->count;
@@ -179,7 +180,7 @@
 
   /* init per-filter data */
   grpc_error *first_error = GRPC_ERROR_NONE;
-  args.start_time = gpr_now(GPR_CLOCK_MONOTONIC);
+  args.start_time = start_time;
   for (i = 0; i < count; i++) {
     args.call_stack = call_stack;
     args.server_transport_data = transport_server_data;
diff --git a/src/core/lib/channel/channel_stack.h b/src/core/lib/channel/channel_stack.h
index c3b662c..004643d 100644
--- a/src/core/lib/channel/channel_stack.h
+++ b/src/core/lib/channel/channel_stack.h
@@ -231,7 +231,8 @@
     grpc_exec_ctx *exec_ctx, grpc_channel_stack *channel_stack,
     int initial_refs, grpc_iomgr_cb_func destroy, void *destroy_arg,
     grpc_call_context_element *context, const void *transport_server_data,
-    grpc_mdstr *path, gpr_timespec deadline, grpc_call_stack *call_stack);
+    grpc_mdstr *path, gpr_timespec start_time, gpr_timespec deadline,
+    grpc_call_stack *call_stack);
 /* Set a pollset or a pollset_set for a call stack: must occur before the first
  * op is started */
 void grpc_call_stack_set_pollset_or_pollset_set(grpc_exec_ctx *exec_ctx,
diff --git a/src/core/lib/surface/call.c b/src/core/lib/surface/call.c
index eafcba2..8d2386e 100644
--- a/src/core/lib/surface/call.c
+++ b/src/core/lib/surface/call.c
@@ -123,6 +123,7 @@
   grpc_channel *channel;
   grpc_call *parent;
   grpc_call *first_child;
+  gpr_timespec start_time;
   /* TODO(ctiller): share with cq if possible? */
   gpr_mu mu;
 
@@ -240,6 +241,7 @@
   call->channel = args->channel;
   call->cq = args->cq;
   call->parent = args->parent_call;
+  call->start_time = gpr_now(GPR_CLOCK_MONOTONIC);
   /* Always support no compression */
   GPR_BITSET(&call->encodings_accepted_by_peer, GRPC_COMPRESS_NONE);
   call->is_client = args->server_transport_data == NULL;
@@ -312,10 +314,10 @@
 
   GRPC_CHANNEL_INTERNAL_REF(args->channel, "call");
   /* initial refcount dropped by grpc_call_destroy */
-  grpc_error *error =
-      grpc_call_stack_init(&exec_ctx, channel_stack, 1, destroy_call, call,
-                           call->context, args->server_transport_data, path,
-                           send_deadline, CALL_STACK_FROM_CALL(call));
+  grpc_error *error = grpc_call_stack_init(
+      &exec_ctx, channel_stack, 1, destroy_call, call, call->context,
+      args->server_transport_data, path, call->start_time, send_deadline,
+      CALL_STACK_FROM_CALL(call));
   if (error != GRPC_ERROR_NONE) {
     grpc_status_code status;
     const char *error_str;
@@ -428,6 +430,8 @@
 
   get_final_status(call, set_status_value_directly,
                    &c->final_info.final_status);
+  c->final_info.stats.latency =
+      gpr_time_sub(gpr_now(GPR_CLOCK_MONOTONIC), c->start_time);
 
   grpc_call_stack_destroy(exec_ctx, CALL_STACK_FROM_CALL(c), &c->final_info, c);
   GRPC_CHANNEL_INTERNAL_UNREF(exec_ctx, channel, "call");
diff --git a/src/core/lib/transport/metadata.c b/src/core/lib/transport/metadata.c
index 977b34c..fac19b9 100644
--- a/src/core/lib/transport/metadata.c
+++ b/src/core/lib/transport/metadata.c
@@ -728,8 +728,8 @@
   return result;
 }
 
-void grpc_mdelem_set_user_data(grpc_mdelem *md, void (*destroy_func)(void *),
-                               void *user_data) {
+void *grpc_mdelem_set_user_data(grpc_mdelem *md, void (*destroy_func)(void *),
+                                void *user_data) {
   internal_metadata *im = (internal_metadata *)md;
   GPR_ASSERT(!is_mdelem_static(md));
   GPR_ASSERT((user_data == NULL) == (destroy_func == NULL));
@@ -740,11 +740,12 @@
     if (destroy_func != NULL) {
       destroy_func(user_data);
     }
-    return;
+    return (void *)gpr_atm_no_barrier_load(&im->user_data);
   }
   gpr_atm_no_barrier_store(&im->user_data, (gpr_atm)user_data);
   gpr_atm_rel_store(&im->destroy_user_data, (gpr_atm)destroy_func);
   gpr_mu_unlock(&im->mu_user_data);
+  return user_data;
 }
 
 grpc_slice grpc_mdstr_as_base64_encoded_and_huffman_compressed(grpc_mdstr *gs) {
diff --git a/src/core/lib/transport/metadata.h b/src/core/lib/transport/metadata.h
index 8dcfbb9..a4955a1 100644
--- a/src/core/lib/transport/metadata.h
+++ b/src/core/lib/transport/metadata.h
@@ -120,8 +120,8 @@
    is used as a type tag and is checked during user_data fetch. */
 void *grpc_mdelem_get_user_data(grpc_mdelem *md,
                                 void (*if_destroy_func)(void *));
-void grpc_mdelem_set_user_data(grpc_mdelem *md, void (*destroy_func)(void *),
-                               void *user_data);
+void *grpc_mdelem_set_user_data(grpc_mdelem *md, void (*destroy_func)(void *),
+                                void *user_data);
 
 /* Reference counting */
 //#define GRPC_METADATA_REFCOUNT_DEBUG
diff --git a/test/core/channel/channel_stack_test.c b/test/core/channel/channel_stack_test.c
index 1e57df9..0840820 100644
--- a/test/core/channel/channel_stack_test.c
+++ b/test/core/channel/channel_stack_test.c
@@ -137,9 +137,10 @@
   GPR_ASSERT(*channel_data == 0);
 
   call_stack = gpr_malloc(channel_stack->call_stack_size);
-  grpc_error *error = grpc_call_stack_init(
-      &exec_ctx, channel_stack, 1, free_call, call_stack, NULL, NULL, path,
-      gpr_inf_future(GPR_CLOCK_MONOTONIC), call_stack);
+  grpc_error *error =
+      grpc_call_stack_init(&exec_ctx, channel_stack, 1, free_call, call_stack,
+                           NULL, NULL, path, gpr_now(GPR_CLOCK_MONOTONIC),
+                           gpr_inf_future(GPR_CLOCK_MONOTONIC), call_stack);
   GPR_ASSERT(error == GRPC_ERROR_NONE);
   GPR_ASSERT(call_stack->count == 1);
   call_elem = grpc_call_stack_element(call_stack, 0);
diff --git a/test/core/end2end/end2end_nosec_tests.c b/test/core/end2end/end2end_nosec_tests.c
index 457c188..6634890 100644
--- a/test/core/end2end/end2end_nosec_tests.c
+++ b/test/core/end2end/end2end_nosec_tests.c
@@ -75,6 +75,8 @@
 extern void filter_call_init_fails_pre_init(void);
 extern void filter_causes_close(grpc_end2end_test_config config);
 extern void filter_causes_close_pre_init(void);
+extern void filter_latency(grpc_end2end_test_config config);
+extern void filter_latency_pre_init(void);
 extern void graceful_server_shutdown(grpc_end2end_test_config config);
 extern void graceful_server_shutdown_pre_init(void);
 extern void high_initial_seqno(grpc_end2end_test_config config);
@@ -153,6 +155,7 @@
   empty_batch_pre_init();
   filter_call_init_fails_pre_init();
   filter_causes_close_pre_init();
+  filter_latency_pre_init();
   graceful_server_shutdown_pre_init();
   high_initial_seqno_pre_init();
   hpack_size_pre_init();
@@ -207,6 +210,7 @@
     empty_batch(config);
     filter_call_init_fails(config);
     filter_causes_close(config);
+    filter_latency(config);
     graceful_server_shutdown(config);
     high_initial_seqno(config);
     hpack_size(config);
@@ -304,6 +308,10 @@
       filter_causes_close(config);
       continue;
     }
+    if (0 == strcmp("filter_latency", argv[i])) {
+      filter_latency(config);
+      continue;
+    }
     if (0 == strcmp("graceful_server_shutdown", argv[i])) {
       graceful_server_shutdown(config);
       continue;
diff --git a/test/core/end2end/end2end_tests.c b/test/core/end2end/end2end_tests.c
index dc2d68a..25c7c62 100644
--- a/test/core/end2end/end2end_tests.c
+++ b/test/core/end2end/end2end_tests.c
@@ -77,6 +77,8 @@
 extern void filter_call_init_fails_pre_init(void);
 extern void filter_causes_close(grpc_end2end_test_config config);
 extern void filter_causes_close_pre_init(void);
+extern void filter_latency(grpc_end2end_test_config config);
+extern void filter_latency_pre_init(void);
 extern void graceful_server_shutdown(grpc_end2end_test_config config);
 extern void graceful_server_shutdown_pre_init(void);
 extern void high_initial_seqno(grpc_end2end_test_config config);
@@ -156,6 +158,7 @@
   empty_batch_pre_init();
   filter_call_init_fails_pre_init();
   filter_causes_close_pre_init();
+  filter_latency_pre_init();
   graceful_server_shutdown_pre_init();
   high_initial_seqno_pre_init();
   hpack_size_pre_init();
@@ -211,6 +214,7 @@
     empty_batch(config);
     filter_call_init_fails(config);
     filter_causes_close(config);
+    filter_latency(config);
     graceful_server_shutdown(config);
     high_initial_seqno(config);
     hpack_size(config);
@@ -312,6 +316,10 @@
       filter_causes_close(config);
       continue;
     }
+    if (0 == strcmp("filter_latency", argv[i])) {
+      filter_latency(config);
+      continue;
+    }
     if (0 == strcmp("graceful_server_shutdown", argv[i])) {
       graceful_server_shutdown(config);
       continue;
diff --git a/test/core/end2end/gen_build_yaml.py b/test/core/end2end/gen_build_yaml.py
index 5f54b82..201a92a 100755
--- a/test/core/end2end/gen_build_yaml.py
+++ b/test/core/end2end/gen_build_yaml.py
@@ -111,6 +111,7 @@
     'empty_batch': default_test_options,
     'filter_causes_close': default_test_options,
     'filter_call_init_fails': default_test_options,
+    'filter_latency': default_test_options,
     'graceful_server_shutdown': default_test_options._replace(cpu_cost=LOWCPU),
     'hpack_size': default_test_options._replace(proxyable=False,
                                                 traceable=False),
diff --git a/test/core/end2end/tests/filter_latency.c b/test/core/end2end/tests/filter_latency.c
new file mode 100644
index 0000000..37ce3b1
--- /dev/null
+++ b/test/core/end2end/tests/filter_latency.c
@@ -0,0 +1,359 @@
+/*
+ *
+ * Copyright 2016, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "test/core/end2end/end2end_tests.h"
+
+#include <limits.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <grpc/byte_buffer.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/time.h>
+#include <grpc/support/useful.h>
+
+#include "src/core/lib/channel/channel_stack_builder.h"
+#include "src/core/lib/surface/channel_init.h"
+#include "test/core/end2end/cq_verifier.h"
+
+enum { TIMEOUT = 200000 };
+
+static bool g_enable_filter = false;
+static gpr_mu g_mu;
+static gpr_timespec g_client_latency;
+static gpr_timespec g_server_latency;
+
+static void *tag(intptr_t t) { return (void *)t; }
+
+static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
+                                            const char *test_name,
+                                            grpc_channel_args *client_args,
+                                            grpc_channel_args *server_args) {
+  grpc_end2end_test_fixture f;
+  gpr_log(GPR_INFO, "%s/%s", test_name, config.name);
+  f = config.create_fixture(client_args, server_args);
+  config.init_server(&f, server_args);
+  config.init_client(&f, client_args);
+  return f;
+}
+
+static gpr_timespec n_seconds_time(int n) {
+  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+}
+
+static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
+
+static void drain_cq(grpc_completion_queue *cq) {
+  grpc_event ev;
+  do {
+    ev = grpc_completion_queue_next(cq, five_seconds_time(), NULL);
+  } while (ev.type != GRPC_QUEUE_SHUTDOWN);
+}
+
+static void shutdown_server(grpc_end2end_test_fixture *f) {
+  if (!f->server) return;
+  grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
+  GPR_ASSERT(grpc_completion_queue_pluck(
+                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 .type == GRPC_OP_COMPLETE);
+  grpc_server_destroy(f->server);
+  f->server = NULL;
+}
+
+static void shutdown_client(grpc_end2end_test_fixture *f) {
+  if (!f->client) return;
+  grpc_channel_destroy(f->client);
+  f->client = NULL;
+}
+
+static void end_test(grpc_end2end_test_fixture *f) {
+  shutdown_server(f);
+  shutdown_client(f);
+
+  grpc_completion_queue_shutdown(f->cq);
+  drain_cq(f->cq);
+  grpc_completion_queue_destroy(f->cq);
+}
+
+// Simple request via a server filter that saves the reported latency value.
+static void test_request(grpc_end2end_test_config config) {
+  grpc_call *c;
+  grpc_call *s;
+  grpc_slice request_payload_slice =
+      grpc_slice_from_copied_string("hello world");
+  grpc_byte_buffer *request_payload =
+      grpc_raw_byte_buffer_create(&request_payload_slice, 1);
+  gpr_timespec deadline = five_seconds_time();
+  grpc_end2end_test_fixture f =
+      begin_test(config, "filter_latency", NULL, NULL);
+  cq_verifier *cqv = cq_verifier_create(f.cq);
+  grpc_op ops[6];
+  grpc_op *op;
+  grpc_metadata_array initial_metadata_recv;
+  grpc_metadata_array trailing_metadata_recv;
+  grpc_metadata_array request_metadata_recv;
+  grpc_byte_buffer *request_payload_recv = NULL;
+  grpc_call_details call_details;
+  grpc_status_code status;
+  grpc_call_error error;
+  char *details = NULL;
+  size_t details_capacity = 0;
+  int was_cancelled = 2;
+
+  gpr_mu_lock(&g_mu);
+  g_client_latency = gpr_time_0(GPR_TIMESPAN);
+  g_server_latency = gpr_time_0(GPR_TIMESPAN);
+  gpr_mu_unlock(&g_mu);
+  const gpr_timespec start_time = gpr_now(GPR_CLOCK_MONOTONIC);
+
+  c = grpc_channel_create_call(f.client, NULL, GRPC_PROPAGATE_DEFAULTS, f.cq,
+                               "/foo", "foo.test.google.fr", deadline, NULL);
+  GPR_ASSERT(c);
+
+  grpc_metadata_array_init(&initial_metadata_recv);
+  grpc_metadata_array_init(&trailing_metadata_recv);
+  grpc_metadata_array_init(&request_metadata_recv);
+  grpc_call_details_init(&call_details);
+
+  memset(ops, 0, sizeof(ops));
+  op = ops;
+  op->op = GRPC_OP_SEND_INITIAL_METADATA;
+  op->data.send_initial_metadata.count = 0;
+  op->data.send_initial_metadata.metadata = NULL;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_SEND_MESSAGE;
+  op->data.send_message = request_payload;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_SEND_CLOSE_FROM_CLIENT;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_RECV_INITIAL_METADATA;
+  op->data.recv_initial_metadata = &initial_metadata_recv;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_RECV_STATUS_ON_CLIENT;
+  op->data.recv_status_on_client.trailing_metadata = &trailing_metadata_recv;
+  op->data.recv_status_on_client.status = &status;
+  op->data.recv_status_on_client.status_details = &details;
+  op->data.recv_status_on_client.status_details_capacity = &details_capacity;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  error = grpc_call_start_batch(c, ops, (size_t)(op - ops), tag(1), NULL);
+  GPR_ASSERT(GRPC_CALL_OK == error);
+
+  error =
+      grpc_server_request_call(f.server, &s, &call_details,
+                               &request_metadata_recv, f.cq, f.cq, tag(101));
+  GPR_ASSERT(GRPC_CALL_OK == error);
+
+  CQ_EXPECT_COMPLETION(cqv, tag(101), 1);
+  cq_verify(cqv);
+
+  memset(ops, 0, sizeof(ops));
+  op = ops;
+  op->op = GRPC_OP_SEND_INITIAL_METADATA;
+  op->data.send_initial_metadata.count = 0;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_SEND_STATUS_FROM_SERVER;
+  op->data.send_status_from_server.trailing_metadata_count = 0;
+  op->data.send_status_from_server.status = GRPC_STATUS_UNIMPLEMENTED;
+  op->data.send_status_from_server.status_details = "xyz";
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_RECV_CLOSE_ON_SERVER;
+  op->data.recv_close_on_server.cancelled = &was_cancelled;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  error = grpc_call_start_batch(s, ops, (size_t)(op - ops), tag(102), NULL);
+  GPR_ASSERT(GRPC_CALL_OK == error);
+
+  CQ_EXPECT_COMPLETION(cqv, tag(102), 1);
+  CQ_EXPECT_COMPLETION(cqv, tag(1), 1);
+  cq_verify(cqv);
+
+  GPR_ASSERT(status == GRPC_STATUS_UNIMPLEMENTED);
+  GPR_ASSERT(0 == strcmp(details, "xyz"));
+
+  gpr_free(details);
+  grpc_metadata_array_destroy(&initial_metadata_recv);
+  grpc_metadata_array_destroy(&trailing_metadata_recv);
+  grpc_metadata_array_destroy(&request_metadata_recv);
+  grpc_call_details_destroy(&call_details);
+
+  grpc_call_destroy(s);
+  grpc_call_destroy(c);
+
+  const gpr_timespec end_time = gpr_now(GPR_CLOCK_MONOTONIC);
+  const gpr_timespec max_latency = gpr_time_sub(end_time, start_time);
+
+  gpr_mu_lock(&g_mu);
+  GPR_ASSERT(gpr_time_cmp(max_latency, g_client_latency) >= 0);
+  GPR_ASSERT(gpr_time_cmp(gpr_time_0(GPR_TIMESPAN), g_client_latency) < 0);
+  GPR_ASSERT(gpr_time_cmp(max_latency, g_server_latency) >= 0);
+  GPR_ASSERT(gpr_time_cmp(gpr_time_0(GPR_TIMESPAN), g_server_latency) < 0);
+  // Server latency should always be smaller than client latency.
+  GPR_ASSERT(gpr_time_cmp(g_server_latency, g_client_latency) < 0);
+  gpr_mu_unlock(&g_mu);
+
+  cq_verifier_destroy(cqv);
+
+  grpc_byte_buffer_destroy(request_payload);
+  grpc_byte_buffer_destroy(request_payload_recv);
+
+  end_test(&f);
+  config.tear_down_data(&f);
+}
+
+/*******************************************************************************
+ * Test latency filter
+ */
+
+static grpc_error *init_call_elem(grpc_exec_ctx *exec_ctx,
+                                  grpc_call_element *elem,
+                                  grpc_call_element_args *args) {
+  return GRPC_ERROR_NONE;
+}
+
+static void client_destroy_call_elem(grpc_exec_ctx *exec_ctx,
+                                     grpc_call_element *elem,
+                                     const grpc_call_final_info *final_info,
+                                     void *and_free_memory) {
+  gpr_mu_lock(&g_mu);
+  g_client_latency = final_info->stats.latency;
+  gpr_mu_unlock(&g_mu);
+}
+
+static void server_destroy_call_elem(grpc_exec_ctx *exec_ctx,
+                                     grpc_call_element *elem,
+                                     const grpc_call_final_info *final_info,
+                                     void *and_free_memory) {
+  gpr_mu_lock(&g_mu);
+  g_server_latency = final_info->stats.latency;
+  gpr_mu_unlock(&g_mu);
+}
+
+static void init_channel_elem(grpc_exec_ctx *exec_ctx,
+                              grpc_channel_element *elem,
+                              grpc_channel_element_args *args) {}
+
+static void destroy_channel_elem(grpc_exec_ctx *exec_ctx,
+                                 grpc_channel_element *elem) {}
+
+static const grpc_channel_filter test_client_filter = {
+    grpc_call_next_op,
+    grpc_channel_next_op,
+    0,
+    init_call_elem,
+    grpc_call_stack_ignore_set_pollset_or_pollset_set,
+    client_destroy_call_elem,
+    0,
+    init_channel_elem,
+    destroy_channel_elem,
+    grpc_call_next_get_peer,
+    grpc_channel_next_get_info,
+    "client_filter_latency"};
+
+static const grpc_channel_filter test_server_filter = {
+    grpc_call_next_op,
+    grpc_channel_next_op,
+    0,
+    init_call_elem,
+    grpc_call_stack_ignore_set_pollset_or_pollset_set,
+    server_destroy_call_elem,
+    0,
+    init_channel_elem,
+    destroy_channel_elem,
+    grpc_call_next_get_peer,
+    grpc_channel_next_get_info,
+    "server_filter_latency"};
+
+/*******************************************************************************
+ * Registration
+ */
+
+static bool maybe_add_filter(grpc_channel_stack_builder *builder, void *arg) {
+  grpc_channel_filter *filter = arg;
+  if (g_enable_filter) {
+    // Want to add the filter as close to the end as possible, to make
+    // sure that all of the filters work well together.  However, we
+    // can't add it at the very end, because the connected channel filter
+    // must be the last one.  So we add it right before the last one.
+    grpc_channel_stack_builder_iterator *it =
+        grpc_channel_stack_builder_create_iterator_at_last(builder);
+    GPR_ASSERT(grpc_channel_stack_builder_move_prev(it));
+    const bool retval =
+        grpc_channel_stack_builder_add_filter_before(it, filter, NULL, NULL);
+    grpc_channel_stack_builder_iterator_destroy(it);
+    return retval;
+  } else {
+    return true;
+  }
+}
+
+static void init_plugin(void) {
+  gpr_mu_init(&g_mu);
+  grpc_channel_init_register_stage(GRPC_CLIENT_CHANNEL, INT_MAX,
+                                   maybe_add_filter,
+                                   (void *)&test_client_filter);
+  grpc_channel_init_register_stage(GRPC_CLIENT_DIRECT_CHANNEL, INT_MAX,
+                                   maybe_add_filter,
+                                   (void *)&test_client_filter);
+  grpc_channel_init_register_stage(GRPC_SERVER_CHANNEL, INT_MAX,
+                                   maybe_add_filter,
+                                   (void *)&test_server_filter);
+}
+
+static void destroy_plugin(void) { gpr_mu_destroy(&g_mu); }
+
+void filter_latency(grpc_end2end_test_config config) {
+  g_enable_filter = true;
+  test_request(config);
+  g_enable_filter = false;
+}
+
+void filter_latency_pre_init(void) {
+  grpc_register_plugin(init_plugin, destroy_plugin);
+}
diff --git a/tools/run_tests/build_stats_schema_no_matrix.json b/tools/run_tests/build_stats_schema_no_matrix.json
index 42650e3..eeb067d 100644
--- a/tools/run_tests/build_stats_schema_no_matrix.json
+++ b/tools/run_tests/build_stats_schema_no_matrix.json
@@ -25,6 +25,11 @@
     "mode": "NULLABLE"
   },
   {
+    "name": "no_report_files_found",
+    "type": "BOOLEAN",
+    "mode": "NULLABLE"
+  },
+  {
     "name": "error",
     "type": "RECORD",
     "mode": "REPEATED",
diff --git a/tools/run_tests/run_build_statistics.py b/tools/run_tests/run_build_statistics.py
index 32f7bc0..654cf95 100755
--- a/tools/run_tests/run_build_statistics.py
+++ b/tools/run_tests/run_build_statistics.py
@@ -47,13 +47,32 @@
 import big_query_utils
 
 
-_HAS_MATRIX=True
 _PROJECT_ID = 'grpc-testing'
 _HAS_MATRIX = True
-_BUILDS = {'gRPC_master': _HAS_MATRIX, 
-           'gRPC_interop_master': not _HAS_MATRIX, 
-           'gRPC_pull_requests': _HAS_MATRIX, 
+_BUILDS = {'gRPC_interop_master': not _HAS_MATRIX,
+           'gRPC_master_linux': not _HAS_MATRIX,
+           'gRPC_master_macos': not _HAS_MATRIX,
+           'gRPC_master_windows': not _HAS_MATRIX,
+           'gRPC_performance_master': not _HAS_MATRIX,
+           'gRPC_portability_master_linux': not _HAS_MATRIX,
+           'gRPC_portability_master_windows': not _HAS_MATRIX,
+           'gRPC_master_asanitizer_c': not _HAS_MATRIX,
+           'gRPC_master_asanitizer_cpp': not _HAS_MATRIX,
+           'gRPC_master_msan_c': not _HAS_MATRIX,
+           'gRPC_master_tsanitizer_c': not _HAS_MATRIX,
+           'gRPC_master_tsan_cpp': not _HAS_MATRIX,
            'gRPC_interop_pull_requests': not _HAS_MATRIX,
+           'gRPC_performance_pull_requests': not _HAS_MATRIX,
+           'gRPC_portability_pull_requests_linux': not _HAS_MATRIX,
+           'gRPC_portability_pr_win': not _HAS_MATRIX,
+           'gRPC_pull_requests_linux': not _HAS_MATRIX,
+           'gRPC_pull_requests_macos': not _HAS_MATRIX,
+           'gRPC_pr_win': not _HAS_MATRIX,
+           'gRPC_pull_requests_asan_c': not _HAS_MATRIX,
+           'gRPC_pull_requests_asan_cpp': not _HAS_MATRIX,
+           'gRPC_pull_requests_msan_c': not _HAS_MATRIX,
+           'gRPC_pull_requests_tsan_c': not _HAS_MATRIX,
+           'gRPC_pull_requests_tsan_cpp': not _HAS_MATRIX,
 }
 _URL_BASE = 'https://grpc-testing.appspot.com/job'
 
@@ -83,6 +102,7 @@
     ('tests.bins/asan/h2_proxy_test streaming_error_response '
      'GRPC_POLL_STRATEGY=legacy'),
 ]
+_NO_REPORT_FILES_FOUND_ERROR = 'No test report files were found. Configuration error?'
 _UNKNOWN_ERROR = 'Unknown error'
 _DATASET_ID = 'build_statistics'
 
@@ -101,6 +121,10 @@
   return error_list, known_error_count
 
 
+def _no_report_files_found(html):
+  return _NO_REPORT_FILES_FOUND_ERROR in html
+
+
 def _get_last_processed_buildnumber(build_name):
   query = 'SELECT max(build_number) FROM [%s:%s.%s];' % (
       _PROJECT_ID, _DATASET_ID, build_name)
@@ -141,6 +165,7 @@
     failure_count = test_result['failCount']
     build_result['pass_count'] = test_result['passCount']
     build_result['failure_count'] = failure_count
+    build_result['no_report_files_found'] = _no_report_files_found(html)
     if failure_count > 0:
       error_list, known_error_count = _scrape_for_known_errors(html)
       unknown_error_count = failure_count - known_error_count
diff --git a/tools/run_tests/sources_and_headers.json b/tools/run_tests/sources_and_headers.json
index 05c2e52..bd831b2 100644
--- a/tools/run_tests/sources_and_headers.json
+++ b/tools/run_tests/sources_and_headers.json
@@ -6310,6 +6310,7 @@
       "test/core/end2end/tests/empty_batch.c", 
       "test/core/end2end/tests/filter_call_init_fails.c", 
       "test/core/end2end/tests/filter_causes_close.c", 
+      "test/core/end2end/tests/filter_latency.c", 
       "test/core/end2end/tests/graceful_server_shutdown.c", 
       "test/core/end2end/tests/high_initial_seqno.c", 
       "test/core/end2end/tests/hpack_size.c", 
@@ -6378,6 +6379,7 @@
       "test/core/end2end/tests/empty_batch.c", 
       "test/core/end2end/tests/filter_call_init_fails.c", 
       "test/core/end2end/tests/filter_causes_close.c", 
+      "test/core/end2end/tests/filter_latency.c", 
       "test/core/end2end/tests/graceful_server_shutdown.c", 
       "test/core/end2end/tests/high_initial_seqno.c", 
       "test/core/end2end/tests/hpack_size.c", 
diff --git a/tools/run_tests/tests.json b/tools/run_tests/tests.json
index ffa03e3..b5a1d79 100644
--- a/tools/run_tests/tests.json
+++ b/tools/run_tests/tests.json
@@ -5370,6 +5370,29 @@
   }, 
   {
     "args": [
+      "filter_latency"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_census_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "graceful_server_shutdown"
     ], 
     "ci_platforms": [
@@ -6430,6 +6453,29 @@
   }, 
   {
     "args": [
+      "filter_latency"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_compress_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "graceful_server_shutdown"
     ], 
     "ci_platforms": [
@@ -7473,6 +7519,28 @@
   }, 
   {
     "args": [
+      "filter_latency"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_fakesec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "graceful_server_shutdown"
     ], 
     "ci_platforms": [
@@ -8433,6 +8501,29 @@
   }, 
   {
     "args": [
+      "filter_latency"
+    ], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_fd_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "graceful_server_shutdown"
     ], 
     "ci_platforms": [
@@ -9447,6 +9538,29 @@
   }, 
   {
     "args": [
+      "filter_latency"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "graceful_server_shutdown"
     ], 
     "ci_platforms": [
@@ -10437,6 +10551,25 @@
   }, 
   {
     "args": [
+      "filter_latency"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+pipe_test", 
+    "platforms": [
+      "linux"
+    ]
+  }, 
+  {
+    "args": [
       "graceful_server_shutdown"
     ], 
     "ci_platforms": [
@@ -11381,6 +11514,29 @@
   }, 
   {
     "args": [
+      "filter_latency"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+trace_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "graceful_server_shutdown"
     ], 
     "ci_platforms": [
@@ -12410,6 +12566,30 @@
   }, 
   {
     "args": [
+      "filter_latency"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_http_proxy_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "graceful_server_shutdown"
     ], 
     "ci_platforms": [
@@ -13499,6 +13679,29 @@
   }, 
   {
     "args": [
+      "filter_latency"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_load_reporting_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "graceful_server_shutdown"
     ], 
     "ci_platforms": [
@@ -14574,6 +14777,30 @@
   }, 
   {
     "args": [
+      "filter_latency"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_oauth2_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "graceful_server_shutdown"
     ], 
     "ci_platforms": [
@@ -15630,6 +15857,30 @@
   }, 
   {
     "args": [
+      "filter_latency"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_proxy_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "graceful_server_shutdown"
     ], 
     "ci_platforms": [
@@ -16542,6 +16793,30 @@
   }, 
   {
     "args": [
+      "filter_latency"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "graceful_server_shutdown"
     ], 
     "ci_platforms": [
@@ -17526,6 +17801,30 @@
   }, 
   {
     "args": [
+      "filter_latency"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair+trace_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "graceful_server_shutdown"
     ], 
     "ci_platforms": [
@@ -18466,6 +18765,32 @@
   }, 
   {
     "args": [
+      "filter_latency"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [
+      "msan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_1byte_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "graceful_server_shutdown"
     ], 
     "ci_platforms": [
@@ -19535,6 +19860,29 @@
   }, 
   {
     "args": [
+      "filter_latency"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_ssl_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "graceful_server_shutdown"
     ], 
     "ci_platforms": [
@@ -20595,6 +20943,29 @@
   }, 
   {
     "args": [
+      "filter_latency"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_ssl_cert_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "graceful_server_shutdown"
     ], 
     "ci_platforms": [
@@ -21622,6 +21993,30 @@
   }, 
   {
     "args": [
+      "filter_latency"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_ssl_proxy_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "graceful_server_shutdown"
     ], 
     "ci_platforms": [
@@ -22566,6 +22961,29 @@
   }, 
   {
     "args": [
+      "filter_latency"
+    ], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_uds_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "graceful_server_shutdown"
     ], 
     "ci_platforms": [
@@ -23603,6 +24021,29 @@
   }, 
   {
     "args": [
+      "filter_latency"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_census_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "graceful_server_shutdown"
     ], 
     "ci_platforms": [
@@ -24640,6 +25081,29 @@
   }, 
   {
     "args": [
+      "filter_latency"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_compress_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "graceful_server_shutdown"
     ], 
     "ci_platforms": [
@@ -25606,6 +26070,29 @@
   }, 
   {
     "args": [
+      "filter_latency"
+    ], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_fd_nosec_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "graceful_server_shutdown"
     ], 
     "ci_platforms": [
@@ -26597,6 +27084,29 @@
   }, 
   {
     "args": [
+      "filter_latency"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "graceful_server_shutdown"
     ], 
     "ci_platforms": [
@@ -27568,6 +28078,25 @@
   }, 
   {
     "args": [
+      "filter_latency"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+pipe_nosec_test", 
+    "platforms": [
+      "linux"
+    ]
+  }, 
+  {
+    "args": [
       "graceful_server_shutdown"
     ], 
     "ci_platforms": [
@@ -28489,6 +29018,29 @@
   }, 
   {
     "args": [
+      "filter_latency"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_full+trace_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "graceful_server_shutdown"
     ], 
     "ci_platforms": [
@@ -29494,6 +30046,30 @@
   }, 
   {
     "args": [
+      "filter_latency"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_http_proxy_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "graceful_server_shutdown"
     ], 
     "ci_platforms": [
@@ -30560,6 +31136,29 @@
   }, 
   {
     "args": [
+      "filter_latency"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_load_reporting_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "graceful_server_shutdown"
     ], 
     "ci_platforms": [
@@ -31563,6 +32162,30 @@
   }, 
   {
     "args": [
+      "filter_latency"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_proxy_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "graceful_server_shutdown"
     ], 
     "ci_platforms": [
@@ -32451,6 +33074,30 @@
   }, 
   {
     "args": [
+      "filter_latency"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "graceful_server_shutdown"
     ], 
     "ci_platforms": [
@@ -33411,6 +34058,30 @@
   }, 
   {
     "args": [
+      "filter_latency"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair+trace_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "graceful_server_shutdown"
     ], 
     "ci_platforms": [
@@ -34325,6 +34996,32 @@
   }, 
   {
     "args": [
+      "filter_latency"
+    ], 
+    "ci_platforms": [
+      "windows", 
+      "linux", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [
+      "msan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_sockpair_1byte_nosec_test", 
+    "platforms": [
+      "windows", 
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "graceful_server_shutdown"
     ], 
     "ci_platforms": [
@@ -35346,6 +36043,29 @@
   }, 
   {
     "args": [
+      "filter_latency"
+    ], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "h2_uds_nosec_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [
       "graceful_server_shutdown"
     ], 
     "ci_platforms": [
diff --git a/vsprojects/vcxproj/test/end2end/tests/end2end_nosec_tests/end2end_nosec_tests.vcxproj b/vsprojects/vcxproj/test/end2end/tests/end2end_nosec_tests/end2end_nosec_tests.vcxproj
index 954ac21..4fb8f8f 100644
--- a/vsprojects/vcxproj/test/end2end/tests/end2end_nosec_tests/end2end_nosec_tests.vcxproj
+++ b/vsprojects/vcxproj/test/end2end/tests/end2end_nosec_tests/end2end_nosec_tests.vcxproj
@@ -187,6 +187,8 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\filter_causes_close.c">
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\filter_latency.c">
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\graceful_server_shutdown.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\high_initial_seqno.c">
diff --git a/vsprojects/vcxproj/test/end2end/tests/end2end_nosec_tests/end2end_nosec_tests.vcxproj.filters b/vsprojects/vcxproj/test/end2end/tests/end2end_nosec_tests/end2end_nosec_tests.vcxproj.filters
index b2747d2..ff82a4d 100644
--- a/vsprojects/vcxproj/test/end2end/tests/end2end_nosec_tests/end2end_nosec_tests.vcxproj.filters
+++ b/vsprojects/vcxproj/test/end2end/tests/end2end_nosec_tests/end2end_nosec_tests.vcxproj.filters
@@ -55,6 +55,9 @@
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\filter_causes_close.c">
       <Filter>test\core\end2end\tests</Filter>
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\filter_latency.c">
+      <Filter>test\core\end2end\tests</Filter>
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\graceful_server_shutdown.c">
       <Filter>test\core\end2end\tests</Filter>
     </ClCompile>
diff --git a/vsprojects/vcxproj/test/end2end/tests/end2end_tests/end2end_tests.vcxproj b/vsprojects/vcxproj/test/end2end/tests/end2end_tests/end2end_tests.vcxproj
index 51b744b..0b7d7c2 100644
--- a/vsprojects/vcxproj/test/end2end/tests/end2end_tests/end2end_tests.vcxproj
+++ b/vsprojects/vcxproj/test/end2end/tests/end2end_tests/end2end_tests.vcxproj
@@ -189,6 +189,8 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\filter_causes_close.c">
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\filter_latency.c">
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\graceful_server_shutdown.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\high_initial_seqno.c">
diff --git a/vsprojects/vcxproj/test/end2end/tests/end2end_tests/end2end_tests.vcxproj.filters b/vsprojects/vcxproj/test/end2end/tests/end2end_tests/end2end_tests.vcxproj.filters
index 33e7098..e641930 100644
--- a/vsprojects/vcxproj/test/end2end/tests/end2end_tests/end2end_tests.vcxproj.filters
+++ b/vsprojects/vcxproj/test/end2end/tests/end2end_tests/end2end_tests.vcxproj.filters
@@ -58,6 +58,9 @@
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\filter_causes_close.c">
       <Filter>test\core\end2end\tests</Filter>
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\filter_latency.c">
+      <Filter>test\core\end2end\tests</Filter>
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\graceful_server_shutdown.c">
       <Filter>test\core\end2end\tests</Filter>
     </ClCompile>