Re: I/O performance
From: GG <grzegorzof_at_interia.pl>
Date: Thu, 21 Jun 2012 19:35:34 +0200
Message-ID: <4FE35B66.1050706_at_interia.pl>
W dniu 2012-06-21 18:19, Allen, Brandon pisze:
> I've researched this more and was a little surprised by my findings so figured I'd share them in case anyone else also finds them interesting and hoping someone else will correct me if I'm wrong. The following article explains the fact that the typical IOPS advertised or calculated for a given disk is based on two major assumptions:
>
> http://www.qdpma.com/Storage/IoQueueDepthStrategy.html
>
> 1) Random IO is spread across the entire disk
> 2) A queue length (aka depth) of 1
>
Have You ever considered SLOB as a benchmark tool for such kind of tests ? http://kevinclosson.wordpress.com/2012/02/06/introducing-slob-the-silly-little-oracle-benchmark/
Date: Thu, 21 Jun 2012 19:35:34 +0200
Message-ID: <4FE35B66.1050706_at_interia.pl>
W dniu 2012-06-21 18:19, Allen, Brandon pisze:
> I've researched this more and was a little surprised by my findings so figured I'd share them in case anyone else also finds them interesting and hoping someone else will correct me if I'm wrong. The following article explains the fact that the typical IOPS advertised or calculated for a given disk is based on two major assumptions:
>
> http://www.qdpma.com/Storage/IoQueueDepthStrategy.html
>
> 1) Random IO is spread across the entire disk
> 2) A queue length (aka depth) of 1
>
Have You ever considered SLOB as a benchmark tool for such kind of tests ? http://kevinclosson.wordpress.com/2012/02/06/introducing-slob-the-silly-little-oracle-benchmark/
Orion has his drawbacks and can be misleading .
Regards
GregG
-- http://www.freelists.org/webpage/oracle-lReceived on Thu Jun 21 2012 - 12:35:34 CDT