[Bug 131094] FsOpBench shows only data=writeback with cfq works

[Jamie Lokier]

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?

-- 
Heavy Disk I/O harms desktop responsiveness
https://bugs.launchpad.net/bugs/131094
You received this bug notification because you are a member of Kernel
Bugs, which is subscribed to Linux.