On 04/10/2012 02:08 PM, Hoppetauet wrote: > Hi > > I was wondering about the completion latencies. I have been doing some virtual machine testing, and would like some help about what the values mean. > > 3;2.0.6;seqwrite;0;0;0;0;0;0;0;0;0.000000;0.000000;0;0;0.000000;0.000000;1.00%=0;5.00%=0;10.00%=0;20.00%=0;30.00%=0;40.00%=0;50.00%=0;60.00%=0;70.00%=0;80.00%=0;90.00%=0;95.00%=0;99.00%=0;99.50%=0;99.90%=0;99.95%=0;99.99%=0;0%=0;0%=0;0%=0;0;0;0.000000;0.000000;0;0;0.000000%;0.000000;0.000000;4194304;17426;4254;246466;0;0;0.000000;0.000000;3;5439652;228.431381;20540.522574;1.00%=4;5.00%=4;10.00%=5;20.00%=5;30.00%=5;40.00%=6;50.00%=6;60.00%=6;70.00%=6;80.00%=7;90.00%=9;95.00%=15;99.00%=25;99.50%=59;99.90%=548;99.95%=3664;99.99%=325632;0%=0;0%=0;0%=0;3;5439652;228.905854;20540.525416;0;162531;100.000000%;30172.429268;37422.864723;2.337414%;3.129483%;6751;1;20;100.0%;0.0%;0.0%;0.0%;0.0%;0.0%;0.0%;0.00%;0.38%;91.44%;6.62%;0.94%;0.27%;0.05%;0.20%;0.02%;0.01%;0.03%;0.01%;0.01%;0.01%;0.01%;0.01%;0.02%;0.01%;0.01%;0.01%;0.01%;0.01%;vda;77;10364;0;12806;4900;19896664;19973372;99.30% > > This is one of my test runs. The completion latency stats are as follows: > min: 3 > max: 5439652 > avg: 228.431381 > std: 20540.522574 > > Does this mean that the maximum amount of time it takes to write 4KB > is 5.4 seconds? Are the values in microseconds or milliseconds (it's > microseconds right)? Thanks They are in microseconds, so yes that'd be 5.43s for the slowest of them. -- Jens Axboe -- To unsubscribe from this list: send the line "unsubscribe fio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
