On Sat, Oct 08, 2011 at 05:24:15PM +0200, Tomas Carnecky wrote: > The issue with sync(2) being slow has been known for a while now (I can > find discussions as early as July 2010). But nobody seems to be willing > to fix it or even figure out out what the actual problem is. I use btrfs > on two hosts, and the sync(2) syscall is consistently slow. By slow I > mean 20 seconds on one and 45(!) seconds on the other. Every single > time, no exceptions. > > Is there anything I can do to help track down the cause? I can test > patches, trace the kernel or use whatever tool is most helpful. >
I think I fixed this, try my git tree git://git.kernel.org/pub/scm/linux/kernel/git/josef/btrfs-work.git Let me know if it helps. And what are you doing when you call sync? I've not been able to reproduce this problem so I'm having a hard time nailing down what it is, so if I can get a reliable way to reproduce it I'll try and figure it out. Thanks, Josef -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
