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
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