Excessive i/o on disk

[claudio_22]

Hi ,

from sar i've a VA lun 100% busy with avque high too . Is possible know what process is making so much i/o on disk ?

Thanks for any response

[Jean-Luc Oudart]

Hi,

If you have Glance you can sort the processes on IO and spot the offender(s)

Regards
Jean-Luc

[RAC_1 · Accepted solution]

sar/glance may show 100% for san/nas disk. But this san/nas disk may be comprised of many disks on san/nas box. Is ths case with you??

iostat, glance may help you. but what you need to look at is which disk on san/nas is getting hit high. Looking san/nas performance will help you in this regard. something like armperf.

You may also want to check what file system is getting hit. - glance -i

[claudio_22]

I don't remember the command in glance that allow sort process by i/o , cpu and so on ..

[Jean-Luc Oudart]

in glance type "o" for option
and (1) fro processes

Regards
Jean-Luc

[Mahesh Kumar Malik]

Hi Claudio

1. Glance will provide you details on Resource utilisation.

2. If your application is IO intensive then you should plan to have RAID0/1 environment

Regards
Mahesh

[claudio_22]

Many thanks

[claudio_22]

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