lkml.org 
[lkml]   [2009]   [Apr]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: [dm-devel] Re: dm-ioband: Test results.
From
Hi Vivek,

> How does your ioband setup looks like. Have you created at least one more
> competing ioband device? Because I think only in that case you have got
> this ad-hoc logic of waiting for the group which has not finished the
> tokens yet and you will end up buffering the bio in a FIFO.

I created two ioband devices and ran the dd commands only on the first
device.

> Do let me know if you think there is something wrong with my
> configuration.

From a quick look at your configuration, there seems to be no problem.

> Can you also send bio-cgroup patches which apply to 2.6.30-rc1 so that
> I can do testing for async writes.

I've just posted the patches to related mailing lists. Please try it.

> Why have you split the regular patch and bio-cgroup patch? Do you want
> to address only reads and sync writes?

For the first step, my goal is to merge dm-ioband into device-mapper,
and bio-cgroup is not necessary for all situations such as bandwidth
control on a per partition basis.

I'll also try to do more test and report you back.

Thank you for your help,
Ryo Tsuruta


\
 
 \ /
  Last update: 2009-04-16 14:59    [from the cache]
©2003-2011 Jasper Spaans