On Wed, Jul 11, 2012 at 11:29 AM, Colin Simpson <Colin.Simpson at iongeo.com> wrote: > > But think yourself lucky, BTRFS on Fedora 16 was much worse. This was > the time it took me to untar a vlc tarball. > > F16 to RHEL5 - 0m 28.170s > F16 to F16 ext4 - 4m 12.450s > F16 to F16 btrfs - 14m 31.252s > > A quick test seems to say this is better in F17 (3m7.240s on BTRFS but > still looks like we are hitting NFSv4 issues for this but btrfs itself > is better). I wonder if the real issue is that NFSv4 waits for a directory change to sync to disk but linux wants to flush the whole disk cache before saying the sync is complete. -- Les Mikesell lesmikesell at gmail.com