From: Frank Rowand <frank.rowand@am.sony.com>
To: "Rowand, Frank" <Frank_Rowand@sonyusa.com>
Cc: Bhavesh Davda <bhavesh@vmware.com>,
"linux-rt-users@vger.kernel.org" <linux-rt-users@vger.kernel.org>,
John Kacur <jkacur@redhat.com>
Subject: Re: [PATCH RT-TESTS] cyclictest: histogram overflow instance tracking
Date: Mon, 22 Oct 2012 18:41:57 -0700 [thread overview]
Message-ID: <5085F5E5.3090204@am.sony.com> (raw)
In-Reply-To: <5085EFD6.7080500@am.sony.com>
On 10/22/12 18:16, Frank Rowand wrote:
> On 10/16/12 10:02, Bhavesh Davda wrote:
>> From: Bhavesh Davda <bhavesh@vmware.com>
>>
>> Add feature to cyclictest histogram mode to track cycle counts every time a
>> sample overflows the histogram limit. This should help identify if there is a
>> timing pattern to jitters in cyclictest runs.
>>
>> Example output (with -h 10):
>> ...
>> Histogram Overflows: 00001 00007 00000 00009 00004 00007 00000 00001
>> Histogram Overflow at cycle number:
>> Thread 0: 09964
>> Thread 1: 00000 00004 00006 00008 00010 09962 11594
>> Thread 2:
>> Thread 3: 01169 04698 06782 09033 10299 11561 21517 28734 29532
>> Thread 4: 11574 11580 11583 11586
>> Thread 5: 00020 09448 13954 14954 18954 20587 24973
>> Thread 6:
>> Thread 7: 18950
>> ...
>>
>> Signed-off-by: Bhavesh Davda <bhavesh@vmware.com>
>
>
> After the patches survive checkpatch, I'll review and test them.
< snip >
> /home/frowand/tmp/hist_overflow_xxx_1 has style problems, please review.
>
> If any of these errors are false positives, please report
> them to the maintainer, see CHECKPATCH in MAINTAINERS.
Oooooops, the following message was about the series file I would
use to apply the patches with quilt. Please ignore it.
> ERROR: Does not appear to be a unified-diff format patch
>
> total: 1 errors, 0 warnings, 0 lines checked
-Frank
next prev parent reply other threads:[~2012-10-23 1:41 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-16 17:02 [PATCH RT-TESTS] cyclictest: histogram overflow instance tracking Bhavesh Davda
2012-10-23 1:16 ` Frank Rowand
2012-10-23 1:41 ` Frank Rowand [this message]
2012-10-23 18:59 ` Bhavesh Davda
2012-10-23 19:25 ` John Kacur
2012-10-23 19:55 ` Frank Rowand
2012-10-23 19:59 ` Sven-Thorsten Dietrich
2012-10-25 21:36 ` Frank Rowand
2012-10-25 22:05 ` Frank Rowand
2012-11-13 23:41 ` Frank Rowand
2012-11-13 23:41 ` Frank Rowand
2012-11-13 23:48 ` Bhavesh Davda
2012-11-13 23:53 ` John Kacur
2012-11-14 0:02 ` Frank Rowand
2012-11-14 0:03 ` Bhavesh Davda
2012-11-14 0:04 ` Bhavesh Davda
2012-11-14 0:09 ` John Kacur
2012-11-14 0:17 ` Bhavesh Davda
2012-11-14 0:19 ` John Kacur
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