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fdtrack: add stats logging.

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Bug: http://b/183008833
Bug: http://b/183018597
Test: adb shell 'setprop persist.sys.debug.fdtrack_interval 10; stop; start' && statsd_testdrive 352
Change-Id: Ibc2293f8f1c7f0f29a166ac8dc93afc8dfd8b7de
Merged-In: Ibc2293f8f1c7f0f29a166ac8dc93afc8dfd8b7de
(cherry picked from commit 53731ea9ab)
This commit is contained in:
Josh Gao
2021-03-17 09:20:01 -07:00
parent 92c4b3d31d
commit a6596c9925
1 changed files with 20 additions and 0 deletions
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20
services/java/com/android/server/SystemServer.java
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@@ -546,6 +546,8 @@ public final class SystemServer implements Dumpable {
new Thread(() -> {
boolean enabled = false;
long nextWrite = 0;
while (true) {
int maxFd = getMaxFd();
if (maxFd > enableThreshold) {
@@ -556,12 +558,30 @@ public final class SystemServer implements Dumpable {
if (maxFd > enableThreshold && !enabled) {
Slog.i("System", "fdtrack enable threshold reached, enabling");
FrameworkStatsLog.write(FrameworkStatsLog.FDTRACK_EVENT_OCCURRED,
FrameworkStatsLog.FDTRACK_EVENT_OCCURRED__EVENT__ENABLED,
maxFd);
System.loadLibrary("fdtrack");
enabled = true;
} else if (maxFd > abortThreshold) {
Slog.i("System", "fdtrack abort threshold reached, dumping and aborting");
FrameworkStatsLog.write(FrameworkStatsLog.FDTRACK_EVENT_OCCURRED,
FrameworkStatsLog.FDTRACK_EVENT_OCCURRED__EVENT__ABORTING,
maxFd);
dumpHprof();
fdtrackAbort();
} else {
// Limit this to once per hour.
long now = SystemClock.elapsedRealtime();
if (now > nextWrite) {
nextWrite = now + 60 * 60 * 1000;
FrameworkStatsLog.write(FrameworkStatsLog.FDTRACK_EVENT_OCCURRED,
enabled ? FrameworkStatsLog.FDTRACK_EVENT_OCCURRED__EVENT__ENABLED
: FrameworkStatsLog.FDTRACK_EVENT_OCCURRED__EVENT__DISABLED,
maxFd);
}
}
try {