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

Bart Van Assche
2008-01-31T17:09:08Z

On Jan 31, 2008 5:25 PM, Joe Landman <landman@scalableinformatics.com> 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.

Bart Van Assche.