From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: linux-kernel@vger.kernel.org,
linux-rt-users <linux-rt-users@vger.kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Carsten Emde <C.Emde@osadl.org>, John Kacur <jkacur@redhat.com>,
Clark Williams <clark.williams@gmail.com>
Subject: Re: [PATCH RT 0/3] hwlat-detector: Have it actually find hardware latency
Date: Wed, 21 Aug 2013 17:59:45 +0200 [thread overview]
Message-ID: <20130821155945.GC16913@linutronix.de> (raw)
In-Reply-To: <20130819213324.405942342@goodmis.org>
* Steven Rostedt | 2013-08-19 17:33:24 [-0400]:
>Thi patch series fixes up hwlat-detector to check the entire path
>of time for a latency being hit, instead of the quick check between
>two time stamps.
>
>It also uses the trace_local_clock() if available, which is much lighter
>weight than ktime_get() which might produce false positives. As
>the trace clock is used to detect irq latencies, it's suitable for
>hardware latency.
>
>Finally, stop machine is removed and the test is run by a single thread.
Applied, thanks.
Sebastian
next prev parent reply other threads:[~2013-08-21 15:59 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-19 21:33 [PATCH RT 0/3] hwlat-detector: Have it actually find hardware latency Steven Rostedt
2013-08-19 21:33 ` [PATCH RT 1/3] hwlat-detector: Update hwlat_detector to add outer loop detection Steven Rostedt
2013-08-19 21:33 ` [PATCH RT 2/3] hwlat-detector: Use trace_clock_local if available Steven Rostedt
2013-08-19 21:33 ` [PATCH RT 3/3] hwlat-detector: Use thread instead of stop machine Steven Rostedt
2013-08-21 15:59 ` Sebastian Andrzej Siewior [this message]
2013-08-30 5:57 ` [PATCH RT] hwlat-detector: Don't ignore threshold module parameter Mike Galbraith
2013-08-30 14:39 ` [PATCH RT] rt,ipc,sem: fix -rt livelock Mike Galbraith
2013-08-31 5:27 ` Mike Galbraith
2013-09-06 7:08 ` Mike Galbraith
2013-09-10 6:30 ` Mike Galbraith
2013-09-11 14:03 ` Manfred Spraul
2013-09-12 7:40 ` Mike Galbraith
2013-09-12 19:15 ` Steven Rostedt
2013-09-13 3:20 ` Mike Galbraith
2013-09-13 3:33 ` Steven Rostedt
2013-09-13 4:48 ` Mike Galbraith
2013-09-13 4:36 ` Mike Galbraith
2013-09-13 12:56 ` Mike Galbraith
2013-09-12 18:23 ` [PATCH RT] hwlat-detector: Don't ignore threshold module parameter Steven Rostedt
2013-10-04 10:30 ` Sebastian Andrzej Siewior
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20130821155945.GC16913@linutronix.de \
--to=bigeasy@linutronix.de \
--cc=C.Emde@osadl.org \
--cc=clark.williams@gmail.com \
--cc=jkacur@redhat.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-rt-users@vger.kernel.org \
--cc=rostedt@goodmis.org \
--cc=tglx@linutronix.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.