tree a561055612055de15003b5fcedf054ea3bf7eb47
parent 00c212aa072adbe9edaf0f7152fcedfa1019899e
author Edwin Kempin <ekempin@google.com> 1560934973 +0200
committer Edwin Kempin <ekempin@google.com> 1560934973 +0200

ReceiveCommits: Use TraceTimers to record execution times for various step

By implementing a PerformanceLogger the recorded execution times can be
exported into a performance log. Having execution times for the various
steps in ReceiveCommits allows us to better understand where time on
slow pushes is spent.

Always include the project name into the meta data because likely
slowness on push also depends on the project that receives the push.

Depending on data that is collected by the new TraceTimers we may
measure execution times more fine-grained to dig deeper into performance
issues, or remove TraceTimers for steps which are always cheap.

Signed-off-by: Edwin Kempin <ekempin@google.com>
Change-Id: I1ac925211adfcfb9a7bf7a73edff05fe5d2efc41