Andi Kleen wrote:
Arjan van de Ven <[EMAIL PROTECTED]> 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
yes indeed; I sort of use the same infrastructure inside the scheduler; the
biggest
reason I felt I had to do something different was that I wanted to do per
process
data collection, so that you can see for a specific process what was going on.
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