[CentOS] cli Checking disk i/o

Robert Moskowitz
Mon, 11 Nov 2019 02:04:51 -0000

On 11/10/19 8:38 PM, Peter wrote:
> On 11/11/19 1:37 PM, Robert Moskowitz wrote:
>> OK.? That is interesting.? I am assuming tps is transfers per sec?
>>
>> I would have to get a stop watch, but it seems to go a bit of time,
>> and then a write.
>>
>> Is there something that would accumulate this and give me a summary
>> over some period of time?? Of course it better NOT be doing its own
>> IOs...
>
> I like iostat -x 4 which will give a summary every four seconds of
> accumulated stats, but check the man page for all the options you can
> use.? iotop (yum install iotop) may also be helpful as it shows disk
> usage per process like top does for CPU and memory.

basically no i/o, but the drive is spinning like mad.? It could be the
hardware as on boot I do get the warning it was never tested upstream...

I added noatime to fstab and then a 'mount -a' but no difference in
behavior.