CentOS - Dec 2017 - Linux IO Performance Monitor

Hello Friends,

I wanna to ask how to learn disk (read,write) latency on linux server

I use "iostat -kx 5" command to learn latency.

But i cant understand which field show latency, svctm or iowait ?

And if value svctm is gerater than 15 ms can we say there is a slowly io
performance ?

And i wanna to learn can we list io latency and utilization  for per
process?

Thanks.

W dniu 06.12.2017 o?08:30, Ali Mumcu pisze:
> Hello Friends,
>
> I wanna to ask how to learn disk (read,write) latency on linux server
>
> I use "iostat -kx 5" command to learn latency.
>
> But i cant understand which field show latency, svctm or iowait ?
>
> And if value svctm is gerater than 15 ms can we say there is a slowly io
> performance ?
>
> And i wanna to learn can we list io latency and utilization  for per
> process?
Hi. I use netdata to monitor my linux servers - not only iowat but whole 
system. Maybe you should try this monitoring tool ?
>
> Thanks.
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