On Sat, Apr 11, 2009 at 11:44 AM, Mark Wong <markwkm(at)gmail(dot)com> wrote:
> On Fri, Apr 10, 2009 at 11:01 AM, Greg Smith <gsmith(at)gregsmith(dot)com> wrote:
>> On Fri, 10 Apr 2009, Scott Carey wrote:
>>> FIO with profiles such as the below samples are easy to set up
>> There are some more sample FIO profiles with results from various
>> filesystems at
> There's a couple of potential flaws I'm trying to characterize this
> weekend. I'm having second thoughts about how I did the sequential
> read and write profiles. Using multiple processes doesn't let it
> really do sequential i/o. I've done one comparison so far resulting
> in about 50% more throughput using just one process to do sequential
> writes. I just want to make sure there shouldn't be any concern for
> being processor bound on one core.
> The other flaw is having a minimum run time. The max of 1 hour seems
> to be good to establishing steady system utilization, but letting some
> tests finish in less than 15 minutes doesn't provide "good" data.
> "Good" meaning looking at the time series of data and feeling
> confident it's a reliable result. I think I'm describing that
FYI, I've updated the wiki with the parameters I'm running with now.
I haven't updated the results yet though.
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