Modifying Samba to skip file system reads for IOZONE READ and
jra at samba.org
Sat Oct 29 00:22:45 GMT 2005
On Fri, Oct 28, 2005 at 04:46:26PM -0700, Richard Sharpe wrote:
> On Fri, 28 Oct 2005, Iozone wrote:
> > Noticed you hack:
> > --------
> > *
> >+ * Little hack for IOZONE ... if name is iozone.DUMMY.
> >+ * then set a flag and create a buffer for read
> >+ */
> Ummm, that little hack I installed was never in any released code, either
> from the Samba team nor from Panasas (my former employer). It was simply
> an experiment to allows us to get an idea of the max throughput that
> could be achieved with IOZONE if the filesystem was not in the way.
> I also did another hack to throw the data away on writes so we could
> measure in both directions and determine where problems might lie.
> I am sorry if that wasn't clear before now.
> However, I do think that making the data more random will stop people
> optimizing for IOZONE.
Thanks Richard - that's what I thought the deal was. I remember you
doing it and I thought it was for testing network throughput. I didn't
think you'd put it into any released code.
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