[sheepdog-users] cache performance test

[Liu Yuan]

On Tue, Jun 25, 2013 at 05:14:08PM +0200, Valerio Pachera wrote:
> 2013/6/25 Valerio Pachera <sirio81 at gmail.com>:
> > I'm getting different value, between 40 and 110 MB/s
> 
> It seems I'm stuck between 30 and 40 MB/s.
> I can't repeat 100 or more MB/s.
> Setting io-scheduler and/or max_sectors_kb doesn't seem to affect
> significantly the performance.
> Without virtio it's a bit slower, sometime under 30 MB/s.

How about performance on the host now? I guess currently your SSD might be in a low
perf state because of garbage collection or something else.

Peope report increase max_sectors_kb boost performace a lot. maybe you can notice it
by setting bs=4M

Thanks,
Yuan