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Filesystem Bottleneck Monitoring

Thomas Turner
Occasional Visitor

Filesystem Bottleneck Monitoring

There are 2 filesystems on my server that are now undergoing some data copying/processing. My team is suspecting that there is some bottleneck there. They are suspecting there's an I/O problem and asked me to turn on some monitoring to tell them if all is ok.

Is there a way to set up some detailed monitoring on what is going on with the performance of the directories? We have the filesystems striped.
Steven E. Protter
Exalted Contributor

Re: Filesystem Bottleneck Monitoring


If you have glance licensed, you can monitor the i/o of all disk real time, or by collecting glance data to disk.

sar -d is a pretty good tool and you can also set up cron to monitor on that basis.

Includes free monitoring tools, based on sar and a script set HP gave me years ago.

Steven E Protter
Owner of ISN Corporation
Kapil Jha
Honored Contributor

Re: Filesystem Bottleneck Monitoring

Is it a SAN disk or local disk,

with glance as said above you can check disk IO as well as LV wise,
use glance sar to isolate the issue.

Is copying very slow or or smthing.

I am in this small bowl, I wane see the real world......
Horia Chirculescu
Honored Contributor

Re: Filesystem Bottleneck Monitoring


In addition, if your filesystems are from SAN, you should check the ports status/traffic made through the SAN switch.

Best regards from Romania,