Re: [Scst-devel] Integration of SCST in the mainstream Linux kernel

[Vladislav Bolkhovitin]

Bart Van Assche wrote:
> On Jan 31, 2008 5:25 PM, Joe Landman <landman@xxxxxxxxxxxxxxxxxxxxxxx> wrote:
>
> > Vladislav Bolkhovitin wrote:
> >
> > > Actually, I don't know what kind of conclusions it is possible to make
> > > from disktest's results (maybe only how throughput gets bigger or slower
> > > with increasing number of threads?), it's a good stress test tool, but
> > > not more.
> >
> > Unfortunately, I agree.  Bonnie++, dd tests, and a few others seem to
> > bear far closer to "real world" tests than disktest and iozone, the
> > latter of which does more to test the speed of RAM cache and system call
> > performance than actual IO.
>
>
> I have ran some tests with Bonnie++, but found out that on a fast
> network like IB the filesystem used for the test has a really big
> impact on the test results.
>
> If anyone has a suggestion for a better test than dd to compare the
> performance of SCSI storage protocols, please let it know.

I would suggest you to try something from real life, like:

 - Copying large file tree over a single or multiple IB links

 - Measure of some DB engine's TPC

 - etc.

> Bart Van Assche.
>
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