gfio: add latency bucket display
Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/gfio.c b/gfio.c
index 3602aa3..2c0c2cc 100644
--- a/gfio.c
+++ b/gfio.c
@@ -472,6 +472,95 @@
free(iops_p);
}
+static GtkWidget *gfio_output_lat_buckets(double *lat, unsigned int num,
+ const char **labels)
+{
+ GtkWidget *tree_view;
+ GtkTreeSelection *selection;
+ GtkListStore *model;
+ GtkTreeIter iter;
+ GType *types;
+ int i, skipped;
+
+ /*
+ * Check if all are empty, in which case don't bother
+ */
+ for (i = 0, skipped = 0; i < num; i++)
+ if (lat[i] <= 0.0)
+ skipped++;
+
+ if (skipped == num)
+ return NULL;
+
+ types = malloc(num * sizeof(GType));
+
+ for (i = 0; i < num; i++)
+ types[i] = G_TYPE_STRING;
+
+ model = gtk_list_store_newv(num, types);
+ free(types);
+ types = NULL;
+
+ tree_view = gtk_tree_view_new_with_model(GTK_TREE_MODEL(model));
+ gtk_widget_set_can_focus(tree_view, FALSE);
+
+ selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(tree_view));
+ gtk_tree_selection_set_mode(GTK_TREE_SELECTION(selection), GTK_SELECTION_BROWSE);
+
+ for (i = 0; i < num; i++)
+ tree_view_column(tree_view, i, labels[i], ALIGN_RIGHT | UNSORTABLE);
+
+ gtk_list_store_append(model, &iter);
+
+ for (i = 0; i < num; i++) {
+ char fbuf[32];
+
+ if (lat[i] <= 0.0)
+ sprintf(fbuf, "0.00");
+ else
+ sprintf(fbuf, "%3.2f%%", lat[i]);
+
+ gtk_list_store_set(model, &iter, i, fbuf, -1);
+ }
+
+ return tree_view;
+}
+
+static void gfio_show_latency_buckets(GtkWidget *vbox, struct thread_stat *ts)
+{
+ GtkWidget *box, *frame, *tree_view;
+ double io_u_lat_u[FIO_IO_U_LAT_U_NR];
+ double io_u_lat_m[FIO_IO_U_LAT_M_NR];
+ const char *uranges[] = { "2", "4", "10", "20", "50", "100",
+ "250", "500", "750", "1000", };
+ const char *mranges[] = { "2", "4", "10", "20", "50", "100",
+ "250", "500", "750", "1000", "2000",
+ ">= 2000", };
+
+ stat_calc_lat_u(ts, io_u_lat_u);
+ stat_calc_lat_m(ts, io_u_lat_m);
+
+ tree_view = gfio_output_lat_buckets(io_u_lat_u, FIO_IO_U_LAT_U_NR, uranges);
+ if (tree_view) {
+ frame = gtk_frame_new("Latency buckets (usec)");
+ gtk_box_pack_start(GTK_BOX(vbox), frame, FALSE, FALSE, 5);
+
+ box = gtk_hbox_new(FALSE, 3);
+ gtk_container_add(GTK_CONTAINER(frame), box);
+ gtk_box_pack_start(GTK_BOX(box), tree_view, TRUE, FALSE, 3);
+ }
+
+ tree_view = gfio_output_lat_buckets(io_u_lat_m, FIO_IO_U_LAT_M_NR, mranges);
+ if (tree_view) {
+ frame = gtk_frame_new("Latency buckets (msec)");
+ gtk_box_pack_start(GTK_BOX(vbox), frame, FALSE, FALSE, 5);
+
+ box = gtk_hbox_new(FALSE, 3);
+ gtk_container_add(GTK_CONTAINER(frame), box);
+ gtk_box_pack_start(GTK_BOX(box), tree_view, TRUE, FALSE, 3);
+ }
+}
+
static void gfio_display_ts(struct fio_client *client, struct thread_stat *ts,
struct group_run_stats *rs)
{
@@ -516,6 +605,8 @@
if (ts->io_bytes[DDIR_WRITE])
gfio_show_ddir_status(vbox, rs, ts, DDIR_WRITE);
+ gfio_show_latency_buckets(vbox, ts);
+
gtk_widget_show_all(dialog);
gdk_threads_leave();