[mythtv-users] Software RAID5 no improvement to transfer speed...
ramses at smeyers.be
Thu Jan 12 15:11:15 UTC 2006
>> 1 prerecorded HD show. The cpu usage hasn't gone higher than 96% so
>> I don't
>> think its a cpu usage problem.
> It sure might be, whatever tool you are using to measure CPU load
> (top?) is averaging over some period of time, if the average is 96%
> then you are almost certainly hitting peaks of 100%+.
vmstat 1 100
you will notice the following:
us: percentage of total processor time consumed by user-space
sy: percentage of total processor time consumed by the kernel
wa: percentage of total processor time spent in I/O wait
id: percentage of total processor time spent idle
high us/sy points to not enough CPU, high wa points to IO wait time -->
disks cannot follow the load
hope this helps
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