Ubuntu
linux package

  1. Bug #131094
  2. Comment #248

Comment 248 for bug 131094

Revision history for this message
Jamie Lokier (jamie-shareable) wrote : Re: [Bug 131094] FsOpBench shows only data=writeback with cfq works

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?