From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Ahern <dsahern@gmail.com>
Subject: Re: Need help in tracking down OS jitters using Intel PT
Date: Thu, 23 Mar 2017 09:30:01 -0600
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To: Yilong Li <yilongl@cs.stanford.edu>, linux-perf-users@vger.kernel.org

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