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  1. Bug #131094
  2. Comment #249

Comment 249 for bug 131094

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Tobias Oetiker (tobi-oetiker) wrote : Re: [Bug 131094] FsOpBench shows only data=writeback with cfq works

Today Jamie Lokier wrote:

> Tobias Oetiker wrote:
> > I have just completed extensive benchmarking on 2.6.31.2 and 2.6.24
> > with a new benchmark program I have written, to measure real-world
> > io performance in high load situations where readers and writers
> > are compeeting.
> >
> > I am looking at HW RAID setups as well a normal single harddrive
> > situations. The bottom line is that on a single harddrive only
> >
> > data=writeback with cfq scheduler
> >
> > has decent performance when readers and writers are in competition
> > and even then, there will be huge outliers of many seconds happeing
> > every now and then. See
> >
> > http://insights.oetiker.ch/linux/fsopbench/
> >
> > for details.
>
> Is that with ext4 or ext3?

I have tested with ext3

cheers
tobi

--
Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten, Switzerland
http://it.oetiker.ch <email address hidden> ++41 62 775 9902 / sb: -9900