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1 Commits

Author SHA1 Message Date
50fffa2973 pprof: create HTTP endpoint for setting MutexProfileFraction
Allows to dynamically change the MutexProfileFraction to enable and
disable mutex profiling. It should be very useful for detecting
deadlocks, lock contention and general concurrency problems.

How to use:
To enable run: curl -X POST -v 'localhost:5001/debug/pprof-mutex/?fraction=10
To disable: curl -X POST -v 'localhost:5001/debug/pprof-mutex/?fraction=0'

Fraction defines which fraction of events will be profiled. Higher it is
the lower performance impact but less reliable the result.

To fetch the result use:
go tool pprof $PATH_TO_IPFS_BIN http://localhost:5001/debug/pprof/mutex

License: MIT
Signed-off-by: Jakub Sztandera <kubuxu@protonmail.ch>
2018-09-26 21:24:49 +02:00