Messages in this thread | | | Date | Wed, 18 Sep 2013 15:35:25 +0200 | From | Ingo Molnar <> | Subject | Re: [RFC] Full syscall argument decode in "perf trace" |
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* David Ahern <dsahern@gmail.com> wrote:
> On 9/18/13 5:35 AM, Denys Vlasenko wrote: > >Therefore my question should be restated as: > > > >Would perf developers accept the "syscall pausing" feature, > >or it won't be accepted? > > I have been using perf-trace a lot lately specifically because it is > effectively a 'passive' observer of the task (e.g., time-sensitive tasks > can be traced with perf but not with strace).
Yes, this is not just an important but a primary design goal for all perf utilities: if the tracing buffers used are large enough then it should be a nearly zero-overhead observer that preserves all previous patterns of behavior as much as possible.
Thanks,
Ingo
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