Re: PEBS bug on HSW: "Unexpected number of pebs records 10" (was: Re:[GIT PULL] perf changes for v3.12)

[Stephane Eranian]

On Tue, Sep 10, 2013 at 5:51 AM, Ramkumar Ramachandra
<artagnon@xxxxxxxxx> wrote:
> Stephane Eranian wrote:
>> a simple multithreaded program where
>> #threads >> #CPUs
>
> To put it another way, does Intel's HT work for CPU intensive and IO
> minimal tasks? I think HT assumes some amount of inefficient IO
> coupled with pure CPU usage.

But your remark has nothing to do with the PMU issue.
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