Re: tiotest, --numruns

[Gregory Leblanc]

Christian Robottom Reis wrote:
> 
> I've seen a lot of variation on various runs of tiotest using the same
> setup - even in single-user mode. Is this expected, and do you know why it
> happens? Is it just the effect of the buffer cache, or do we avoid using
> it?
> 
> What's a decent --numruns to use, taking into evidence such
> variation? I've noticed if I use more than one I get worse numbers in
> general - this is ok?

I just let my SPARC run for three days compiling results from
tiobench.pl.  The machine has 128MB of ram, so I'm running with 384 as
the size, and in order to get results that are reasonably close, I had
to use a numruns=6.  I'll leave it run doing the same benchmarks under
Solaris, assuming that tiotest compiles there.  
        Greg