From: David Ahern <dsahern@gmail.com>
To: Yilong Li <yilongl@cs.stanford.edu>, linux-perf-users@vger.kernel.org
Subject: Re: Need help in tracking down OS jitters using Intel PT
Date: Thu, 23 Mar 2017 09:30:01 -0600 [thread overview]
Message-ID: <6ccea408-bf0e-e730-5375-e6cba55f6540@gmail.com> (raw)
In-Reply-To: <CAPJB79SqGQY-jb455rJXsyzF7cEkrLE653rwG+rPy6F4+-VQEA@mail.gmail.com>
On 3/23/17 3:28 AM, Yilong Li wrote:
> What am I missing? Where does the 15us go? The program and the scripts
> I used in the experiment can be found here:
> https://github.com/yilongli/OSJitterTest.
have you tried the hw latency detector? kernel/trace/trace_hwlat.c and
config HWLAT_TRACER
next prev parent reply other threads:[~2017-03-23 15:30 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-23 9:28 Need help in tracking down OS jitters using Intel PT Yilong Li
2017-03-23 15:30 ` David Ahern [this message]
2017-03-23 19:56 ` Yilong Li
2017-03-24 6:16 ` Yilong Li
[not found] ` <CAPAnC4MSH7s+Xi_WUHxYsJBEgPt1i8gcFP4yH2bTG=0vCVHsJA@mail.gmail.com>
2017-03-23 19:55 ` Yilong Li
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