diff options
| author | Kalesh Singh <kaleshsingh@google.com> | 2022-06-16 01:45:53 -0700 |
|---|---|---|
| committer | Kalesh Singh <kaleshsingh@google.com> | 2022-06-20 15:15:26 -0700 |
| commit | d5b5f5acb6f447ea2c72bad4f8bcc2a146f0531a (patch) | |
| tree | a920d002426afa1dff7e09b4eb29509e38422072 | |
| parent | 33da9468354b9b530712d4157298a8e0479cf2e5 (diff) | |
| download | native-d5b5f5acb6f447ea2c72bad4f8bcc2a146f0531a.tar.gz | |
atrace: Remove persisitent rss_stat_throttled trigger
It was found that the persistent rss_stat_throttled event trigger
causes a 8% incease in kswapd CPU usage. So remove this persistent
trigger, instead perfetto will dynamically create the trigger when
needed.
Test: adb push test/configs/rss_stat.cfg /data/local/tmp/
&& cf-adb shell 'cat /data/local/tmp/rss_stat.cfg |
perfetto --txt -c - -o /data/misc/perfetto-traces/trace
Bug: 236172293
Change-Id: I70a978de1fbf2ed538bb869edc715e61aee7efa4
Merged-In: I70a978de1fbf2ed538bb869edc715e61aee7efa4
| -rw-r--r-- | cmds/atrace/atrace.rc | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/cmds/atrace/atrace.rc b/cmds/atrace/atrace.rc index 32ffe142cf..5267b0294c 100644 --- a/cmds/atrace/atrace.rc +++ b/cmds/atrace/atrace.rc @@ -294,12 +294,9 @@ on late-init write /sys/kernel/tracing/synthetic_events "rss_stat_throttled unsigned int mm_id; unsigned int curr; int member; long size" write /sys/kernel/debug/tracing/synthetic_events "rss_stat_throttled unsigned int mm_id; unsigned int curr; int member; long size" -# Set up histogram triggers - # rss_stat_throttled (bucket size == 512KB) - chmod 0666 /sys/kernel/tracing/events/kmem/rss_stat/trigger + # allow creating event triggers chmod 0666 /sys/kernel/debug/tracing/events/kmem/rss_stat/trigger - write /sys/kernel/tracing/events/kmem/rss_stat/trigger "hist:keys=mm_id,member:bucket=size/0x80000:onchange($$bucket).rss_stat_throttled(mm_id,curr,member,size)" - write /sys/kernel/debug/tracing/events/kmem/rss_stat/trigger "hist:keys=mm_id,member:bucket=size/0x80000:onchange($$bucket).rss_stat_throttled(mm_id,curr,member,size)" + chmod 0666 /sys/kernel/tracing/events/kmem/rss_stat/trigger # Only create the tracing instance if persist.mm_events.enabled # Attempting to remove the tracing instance after it has been created |