tree 401936aea2165e4b8dfd2776f7bb4471aaf770d3
parent b8c05818ba5282261a1b3ba3889d20e15c134214
author Zim <zezeozue@google.com> 1688560509 +0100
committer Zim <zezeozue@google.com> 1688582257 +0100

[metrics] Add thread creation spam stats to android_task_names

First added an ANDROID_THREAD_CREATION_SPAM stdlib function to
find stats of rapidly created threads.

To support finding thread names where only some suffix changes,
e.g Thread-123, we aggreate the stats per process per thread prefix.
We currently use a STR_SPLIT workaround to find prefixes by splitting
thread names by some common delimiters. When we have perfetto REGEXP
support, we can replace this with a more robust solution.

Test: tools/diff_test_trace_processor.py out/android/trace_processor_shell
Change-Id: Idfc5b89be82a709d08577b066c2db7f4f213d1b6