Monday, February 13, 2012

%disk time > 2500

Is the %disk time > 2500 bad ? What does that mean ? My pages/sec seem to be
low ..around 0 with a few spikes here and there..so why is the %disk time
high ?
ThanksHi,
%disk time > 2500 , are you saying that your disk is running at 2500%, if
you are I want one of those disk :)
Can you tell me if you are using a software RAID 5 config? If so this might
explain the numbers. If you are using a software raid try dividing this
number by the number of disks. Although thinking a bit more I doubt
software RAID would explain the figure.
Basically PhysicalDisk:% Disktime shows how busy each disk is. long period
of busy times say over 50% for 10 minutes indicates problems (too many
writes/reads , slow disk) So a figure of 2500 is really saying something.
You should look to other counters like %disk read time %disk write time and
Avg Disk queue length to see where the issues are . If this activity is not
caused by paging then you have a very very busy machine.
I hope this helps
regards
Greg O MCSD
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"Hassan" <fatima_ja@.hotmail.com> wrote in message
news:O30Ol8LWDHA.392@.TK2MSFTNGP11.phx.gbl...
> Is the %disk time > 2500 bad ? What does that mean ? My pages/sec seem to
be
> low ..around 0 with a few spikes here and there..so why is the %disk time
> high ?
> Thanks
>

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