From: Frank Rowand <frank.rowand@am.sony.com>
To: Bhavesh Davda <bhavesh@vmware.com>
Cc: John Kacur <jkacur@redhat.com>,
"linux-rt-users@vger.kernel.org" <linux-rt-users@vger.kernel.org>
Subject: Re: [PATCH RT-TESTS] cyclictest: new command line switch for histogram overflow instance tracking
Date: Mon, 26 Nov 2012 13:14:20 -0800 [thread overview]
Message-ID: <50B3DBAC.90208@am.sony.com> (raw)
In-Reply-To: <50A6F963.9000207@am.sony.com>
On 11/16/12 18:41, Frank Rowand wrote:
> On 11/16/12 18:31, Frank Rowand wrote:
>
> < snip >
>
>> I graphed the results with the msec data and with the nanosecond
>> timestamps for an artificial test (two test runs for each case):
>>
>> nanosecond: junk7.gif junk10.gif
>> msec: junk8_d.gif junk9_d.gif
>>
>> The cyclictest latency disruptions seem more visible to me in the
>> nanosecond data graphs. But that is just a first impression
>> without playing around with a lot of different data sets.
>
> John, Bhavesh,
>
> OK, so after all of that, I'm going on vacation for a week.
> I hope the rest of you are taking some time off too.
I'm back... Bhavesh, have you had a chance to think about my last
several emails (my comments on your latest patch, my proposed patch,
and the email I'm responding to)? Any comments?
>
> My conclusion after my data creation and graphing exercise is that
> it might be good if people could play around with collecting and
> analyzing real histogram overflow data and see what data formats
> provide useful information.
>
> I think we should not rush the patch into John's tree so that we
> aren't stuck with a format or type of data that is not optimal.
>
> Bhavesh, if you created this feature based on a real world need
> (instead of just a brilliant mind exercise), it would be great
> if you could apply the latest iteration (or iterations in the
> near future) to your actual data collection and provide a real
> world example of how this feature makes cyclictest better.
>
> Thanks,
>
> Frank
next prev parent reply other threads:[~2012-11-26 21:14 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <943398371.54180912.1352931103535.JavaMail.root@vmware.com>
2012-11-14 22:18 ` [PATCH RT-TESTS] cyclictest: new command line switch for histogram overflow instance tracking Bhavesh Davda
2012-11-14 23:42 ` Frank Rowand
2012-11-15 2:17 ` Bhavesh Davda
2012-11-16 0:11 ` Frank Rowand
2012-11-16 1:56 ` Bhavesh Davda
2012-11-16 2:04 ` Bhavesh Davda
2012-11-16 2:24 ` Frank Rowand
[not found] ` <50A6F713.7010806@am.sony.com>
2012-11-17 2:41 ` Frank Rowand
2012-11-26 21:14 ` Frank Rowand [this message]
2012-11-26 21:37 ` Bhavesh Davda
2012-11-29 17:28 ` Bhavesh Davda
2012-11-29 19:57 ` Frank Rowand
2012-12-12 1:45 ` Frank Rowand
2012-12-17 18:24 ` Bhavesh Davda
2012-12-17 21:34 ` Frank Rowand
2012-12-17 22:17 ` Bhavesh Davda
2012-12-17 23:30 ` Frank Rowand
2012-11-17 2:01 ` Frank Rowand
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