Thread (24 messages) 24 messages, 6 authors, 2016-08-10

Re: [RFC][PATCH 0/3] tracing: Add Hardware Latency detector tracer

From: Steven Rostedt <rostedt@goodmis.org>
Date: 2016-08-09 18:30:44
Also in: lkml

On Tue, 9 Aug 2016 13:15:16 -0500
Clark Williams [off-list ref] wrote:
On Thu, 4 Aug 2016 11:30:33 -0400
Steven Rostedt [off-list ref] wrote:
quoted
Note, I'm currently working on adding code to detect NMIs to this as
well. And perhaps even tracing SMI counters. Just to show what caused
the latency, as latency isn't measured by the counters (that I know of).
  
I like the trace report, but for one small thing; I think it's worth
either adding units to the reported latency values (us suffix) or
putting in a header line that hwlatdetect values are reported in
microseconds.
Yeah, adding "us" to the time stamps would be useful. I'll update.

-- Steve
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