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тАО11-13-2002 11:16 AM
тАО11-13-2002 11:16 AM
How do I get IO statistics on a SmartArray controller under RedHat?
I have a SmartArray 5304 installed in a ML370G3 running RedHat 8.0 with the latest patches. When I run iostat or cat /proc/stat, I don't see any information for the three cciss partitions:
/dev/cciss/c0d1p3
/dev/cciss/c0d1p1
/dev/cciss/c0d0p1
I vaguely recall looking into this a couple of years back on another machine and finding out that there was a kernel limitation on the major and minor nodes for monitored devices. Is this still true, or is there something else I can do to watch the disk I/O statistics with this controller?
/dev/cciss/c0d1p3
/dev/cciss/c0d1p1
/dev/cciss/c0d0p1
I vaguely recall looking into this a couple of years back on another machine and finding out that there was a kernel limitation on the major and minor nodes for monitored devices. Is this still true, or is there something else I can do to watch the disk I/O statistics with this controller?
2 REPLIES 2
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тАО11-13-2002 03:36 PM
тАО11-13-2002 03:36 PM
Re: How do I get IO statistics on a SmartArray controller under RedHat?
It's probably not sufficient, but what about 'sar' ?
One long-haired git at your service...
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тАО11-14-2002 05:47 AM
тАО11-14-2002 05:47 AM
Re: How do I get IO statistics on a SmartArray controller under RedHat?
Replying to my own question. :)
It turns out that you can get a list of the devices in /proc/partitions, then run iostat -x. For example:
iostat -x cciss/c0d0
gives
avg-cpu: %user %nice %sys %idle
0.50 0.00 12.00 87.50
Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s rkB/s wkB/s avgrq-sz avgqu-sz await svctm %util
/dev/cciss/c0d0
11831.00 0.00 470.00 0.00 98400.00 0.00 49200.00 0.00 209.36 52.38 11.14 2.13 100.00
- David
It turns out that you can get a list of the devices in /proc/partitions, then run iostat -x
iostat -x cciss/c0d0
gives
avg-cpu: %user %nice %sys %idle
0.50 0.00 12.00 87.50
Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s rkB/s wkB/s avgrq-sz avgqu-sz await svctm %util
/dev/cciss/c0d0
11831.00 0.00 470.00 0.00 98400.00 0.00 49200.00 0.00 209.36 52.38 11.14 2.13 100.00
- David
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