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| author | Michael Pratt <mpratt@google.com> | 2021-09-13 18:07:29 -0400 |
|---|---|---|
| committer | Michael Pratt <mpratt@google.com> | 2021-09-16 11:20:37 -0400 |
| commit | bd296e799bd3eceaa3c3f3db1227f9dba62bb1a1 (patch) | |
| tree | 94dd1cd89df012d7159b0922e5f2f53914e73e8a /pkg/safecopy | |
| parent | 9bdeddd8826f98251584567b4157c63b297b7825 (diff) | |
runsc: add global profile collection flags
Add global flags -profile-{block,cpu,heap,mutex} and -trace which
enable collection of the specified profile for the entire duration of a
container execution. This provides a way to definitively start profiling
before that application starts, rather than attempting to race with an
out-of-band `runsc debug`.
Note that only the main boot process is profiled.
This exposed a bug in Task.traceExecEvent: a crash when tracing and
-race are enabled. traceExecEvent is called off of the task goroutine,
but uses the Task as a context, which is a violation of the Task
contract. Switching to the AsyncContext fixes the issue.
Fixes #220
Diffstat (limited to 'pkg/safecopy')
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