25 Jul
2008
25 Jul
'08
1:52 a.m.
Matt wrote:
I was monitoring it with SAR and there was very high level of IOWait, meaning the drive was having a hard time.
How bad does the below look? Dual core AM2 5600+ with 4G DDR2 and single SATA2 drive.
Matt
10:10:01 AM all 20.54 0.00 4.09 15.85 59.52 05:40:01 PM CPU %user %nice %system %iowait %idle 05:50:01 PM all 7.20 0.00 2.49 5.08 85.23
...
use `iostat -x 5` for 5 second intervals with a lot more detail on disk IO operations. ignore the first output sample, thats the average since last boot.. iostat is part of the sysstat package, yum install sysstat, if you don't already have it.