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windows perfmon only has duration of 1:40

Posted on 2011-03-18
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Last Modified: 2012-05-11
I am trying to determin if a hard disk is slowing down and should be replaced.

I am using the perfmon to look at disk read/write/queue lengths etc.

My test involved allowing the computer to boot and go idle. Then ask the machine to stream video or defrag the disk. (I'm looking for something to cause disk activity that can be baselined).

I am taking a snapshot with perfmon on the counters I am monitoring but the duration is only 1:40min. Is this a rolling average of the last 1:40? Can I change this duration to pull a 5min average?

Once I have this snapshot I will clone the drive to a new comparable drive and will bench mark again.

In essence I am looking for a good way to bench mark each drive with perfmon and make a comparison.

(also this dell system doesn't support smart :()

Thanks in advance for your input
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Question by:Jamesey1
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boowhup earned 500 total points
ID: 35176416
The perfmon window will only show 100 "samples" by default the sampling rate is every second... if you change it to every 5 seconds, you'll get ~8 minutes etc etc.

Right click on the perfmon graph window, select properties, General Tab, down the bottom "Sample Automatically Every:"

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by:Jamesey1
ID: 35296520
Thanks for the insight. It is appreciated.
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