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SubjectRe: [PATCH 0/8][V2] blk-throttle: Throttle buffered WRITEs in balance_dirty_pages()
On Wed, Jun 29, 2011 at 06:05:32PM +0200, Andrea Righi wrote:

> > > Have you tried to do some tests? (i.e. create multiple cgroups with very
> > > low I/O limit doing parallel O_DIRECT WRITEs, and try to run at the same
> > > time "ls" or other simple commands from the root cgroup or unlimited
> > > cgroup).
> >
> > I did. On ext4, I created a cgroup with limit 1byte per second and
> > started a direct write and did "ls", "sync" and some directory traversal
> > operations in same diretory and it seems to work.
> Confirm. Everything seems to work fine also on my side.
> Tested-by: Andrea Righi <>
> FYI, I've used the following script to test it if you're interested.
> I tested both with O_DIRECT=1 and O_DIRECT=0.

Thanks for testing these patches. This script looks good. Will save it.


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