Re: Pre-approval request for dpkg sync() changes for squeeze
On 2010-11-06 08:46 +0100, Guillem Jover wrote:
> On Fri, 2010-11-05 at 23:18:47 +0100, Philipp Kern wrote:
>> On Fri, Oct 22, 2010 at 11:35:54AM +0200, Guillem Jover wrote:
>> What are the implications for ext4 and btrfs?
> They are going to be slower with this change.
Are you sure this is the case for btrfs? Mike Hommey has described the
sync() implementation as really horrible (unfortunately the webserver on
glandium.org is currently down, but the Google cache has a copy).
For ext4, mounting with the nodelalloc option helps a lot, although this
option allegedly slows down ext4 in the general case.