Multi threaded random IO
Any standard comparison between multi threaded random Write vs multi threaded random Read on XFS or any other filesystem?
I see multi threaded random Write faster than multi threaded random Read. Which is contradictory to standard "Reads faster that Writes" law.
My test setup is.
10MB record size, 2TB filesize, 8 threads.iozone
Any comments?
Thanks,
Milind
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Le Fri, 17 Jul 2009 02:28:14 -0700
Milind Dumbare <[email protected]> écrivait:
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I see multi threaded random Write faster than multi threaded random Read. Which is contradictory to standard "Reads faster that Writes" law.
My test setup is.
10MB record size, 2TB filesize, 8 threads.iozoneAny comments?
Well it very much depends upon your underlying hardware. For instance 3Ware RAID cards with default settings read very poorly, they even get much slower in sequential read than sequential write.
So basically you have to provide much more detailed hardware setup :
storage hardware, attachment, number and type of drives, RAID level...
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