From: Hoppetauet <hoppetauet@gmail.com>
To: fio@vger.kernel.org
Subject: High standard deviation
Date: Thu, 19 Apr 2012 09:31:50 +0200 [thread overview]
Message-ID: <4F8FBF66.9050109@gmail.com> (raw)
Hello
Can someone give some insight as to why the standard deviation for
completion latencies is so high?
I have a completion latency avg of 0.21ms, while the st dev is 12.33ms.
Is it because of some really high numbers here and there?
Also, can someone tell me where the total latency is located in this
--minimal output
work;0;0;8388608;55741;154103;0;0;0.000000;0.000000;1;1323005;69.848293;1088.205315;0;60512;104.688135%;56986.986348;4117.299600;0;0;0;0;0;0.000000;0.000000;0;0;0.000000;0.000000;0;0;0.000000%;0.000000;0.000000;1.109655%;3.491194%;32878;0;33;100.0%;0.0%;0.0%;0.0%;0.0%;0.0%;0.0%;53.89%;44.49%;0.05%;0.01%;0.01%;0.01%;0.00%;0.01%;0.00%;0.01%;0.01%;0.84%;0.72%;0.01%;0.01%;0.01%;0.00%;0.01%;0.00%;0.00%;0.01%;0.00%
Thanks
reply other threads:[~2012-04-19 7:31 UTC|newest]
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