commit fb1f592602282b7a89292263eef809caa239811a
author Suren Baghdasaryan <surenb@google.com> Tue May 19 13:07:23 2020 -0700
committer Suren Baghdasaryan <surenb@google.com> Wed May 20 12:21:34 2020 -0700
tree 44cc362c675c9e4e276119ecaa64b20ff8c0b0aa
parent 5c039b53d877273b860b060540051fb4d64e342a

lmkd: Set the default free swap threshold to 10% for all devices

Lower the min swap threshold to 10% for all devices to limit kills while
swap still has enough space.

Bug: 155709603
Test: memory stress test with multiple foreground apps
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Merged-In: I443486763c034ed0603ea52b81c060c3969af9a5
Change-Id: I443486763c034ed0603ea52b81c060c3969af9a5

lmkd.cpp

diff --git a/lmkd.cpp b/lmkd.cpp
index bb829f1..29bbc9a 100644
--- a/lmkd.cpp
+++ b/lmkd.cpp
@@ -129,8 +129,7 @@
  * System property defaults
  */
 /* ro.lmk.swap_free_low_percentage property defaults */
-#define DEF_LOW_SWAP_LOWRAM 10
-#define DEF_LOW_SWAP 20
+#define DEF_LOW_SWAP 10
 /* ro.lmk.thrashing_limit property defaults */
 #define DEF_THRASHING_LOWRAM 30
 #define DEF_THRASHING 100
@@ -3215,7 +3214,7 @@
     per_app_memcg =
         property_get_bool("ro.config.per_app_memcg", low_ram_device);
     swap_free_low_percentage = clamp(0, 100, property_get_int32("ro.lmk.swap_free_low_percentage",
-        low_ram_device ? DEF_LOW_SWAP_LOWRAM : DEF_LOW_SWAP));
+        DEF_LOW_SWAP));
     psi_partial_stall_ms = property_get_int32("ro.lmk.psi_partial_stall_ms",
         low_ram_device ? DEF_PARTIAL_STALL_LOWRAM : DEF_PARTIAL_STALL);
     psi_complete_stall_ms = property_get_int32("ro.lmk.psi_complete_stall_ms",