On Wed, 30 Mar 2005, Doug White wrote: > On Wed, 30 Mar 2005, Andrey Koklin wrote: > >> Firstly, I'm thankful to people who had found time to answer my previous >> messed post privately. Indeed, I hadn't put there key information about >> my system configuration, as well as the tests themselves say little or >> nothing on real disk system performance (they used 1K blocks and didn't >> take into consideration disks geometry). > > You've still omitted the array setup, including RAID type and stripe size. > > I'd also suggest using a tool like iozone to run your tests instead of dd. > Unless your workload consists of entirely sequential writes this perf test > is worthless. Even bonnie++ (Which benchmarks far more than just the underlying storage subsystem) would have been a better benchmark. An excellent series of DOs and DONTs messages were exchanged last year in January. An overview of the thread can be found at: http://blog.delphij.net/archives/000047.html Happy benchmarking! :-) Andy | Andre Guibert de Bruet | Enterprise Software Consultant > | Silicon Landmark, LLC. | http://siliconlandmark.com/ >Received on Wed Mar 30 2005 - 16:06:42 UTC
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