[CentOS] benchmarking large RAID arrays

Feizhou feizhou at graffiti.net
Thu Sep 14 01:22:25 UTC 2006

chrism at imntv.com wrote:
> I'm just wondering what folks are using to benchmark/tune large arrays 
> these days.  I've always used bonnie with file sizes 2-3 times physical 
> RAM.  Maybe there's a better way?

Depends on your needs. You want to simulate as close as possible your 
intended application.

A lot of the commonly used tests such as bonnie/bonnie++ proved 
inappropriate when you want sync behaviour. I don't know about now but 
bonnie did not do fsync calls and so performance was better with it than 
real world performance for cases where fsync was used in the application.

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