Completion and submission latency

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