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init.rc: Disable native stats collection service

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When opening and closing activities in Settings, a measurably
significant amount of CPU time is spent processing and logging stats
events in statsd:

0.02%     /apex/com.android.os.statsd/lib64/libstatspull.so                                                                                         @plt
0.01%     /apex/com.android.os.statsd/bin/statsd                                                                                                    @plt
0.01%     /apex/com.android.os.statsd/bin/statsd                                                                                                    SocketListener::runListener()
0.01%     /apex/com.android.os.statsd/bin/statsd                                                                                                    android::os::statsd::LogEvent::parseBuffer(unsigned char*, unsigned long)
0.01%     /apex/com.android.os.statsd/bin/statsd                                                                                                    android::os::statsd::LogEvent::parseAnnotations(unsigned char, int)

Over longer device uptimes with real-world usage, statsd uses a
substantial amount of total CPU time. We have no use for the stats
recorded by statsd, so disable the service entirely to save CPU in
potential hotpaths.

This is the system/core part of the change; changes to frameworks/base
are also required.

Test: simpleperf record -a; verify that statsd no longer appears in
      sample hits
Change-Id: Idf6fdb0eff987169bd5f370dd72315e831a669e6
Signed-off-by: Hưng Phan <phandinhhungvp2001@gmail.com>
Signed-off-by: Dmitrii <bankersenator@gmail.com>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
Signed-off-by: rmp22 <195054967+rmp22@users.noreply.github.com>
This commit is contained in:
Danny Lin 2025-02-09 17:46:15 +08:00 • committed by DigiGoon
parent 2e24debf3c
commit 1aea24d503
1 changed files with 0 additions and 1 deletions
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rootdir/init.rc
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@ -1143,7 +1143,6 @@ on zygote-start
wait_for_prop odsign.verification.done 1
# A/B update verifier that marks a successful boot.
exec_start update_verifier
start statsd
start zygote
start zygote_secondary