Em Mon, Aug 05, 2013 at 09:41:36PM -0400, David Ahern escreveu:
> This is useful to spot high latency blips. It is normal for HLT
> reasons to have long exit times, so strip those from the threshold
> check.
So 'perf trace' has a similar option:
[acme@zoo linux]$ perf trace --help
<SNIP>
--duration <float>
show only events with duration > N.M ms
<SNIP>
While you used:
> + OPT_U64('T', "threshold", &kvm->threshold,
> + "show events other than HALT that take longer than
> threshold usecs"),
I prefer 'duration', and haven't assigned a single letter to it, they
are scarce and we have shell long option completion, what do you think?
The term was chosen, for 'perf trace' on the original patchset:
http://lwn.net/Articles/415728/
- Arnaldo
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