Messages in this thread | | | Subject | Re: [Announce] Development release 0.1 of the LatencyTOP tool | From | Andi Kleen <> | Date | Sat, 19 Jan 2008 06:07:28 +0100 |
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Arjan van de Ven <arjan@linux.intel.com> writes:
> The Intel Open Source Technology Center is pleased to announce the > release of version 0.1 of LatencyTOP, a tool for developers to visualize > system latencies.
Just for completeness -- Linux already had a way to profile latencies since quite some time. It's little known unfortunately and doesn't work for modules since it's a special mode in the old non modular kernel profiler.
You enable CONFIG_SCHEDSTATS and boot with profile=sleep and then you can use the readprofile command to read the data. Information can be reset with echo > /proc/profile
There's also a profile=sched to profile the scheduler which works even without CONFIG_SCHEDSTATS
Latencytop will be probably a little more user friendly though.
-Andi
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