[Qemu-devel] Re: BTRFS: Unbelievably slow with kvm/qemu

2010-07-12 Thread Josef Bacik
On Mon, Jul 12, 2010 at 10:23:14PM +0200, Giangiacomo Mariotti wrote: > On Mon, Jul 12, 2010 at 3:43 PM, Josef Bacik wrote: > > > > O_DIRECT support was just introduced recently, please try on the latest > > kernel > > with the normal settings (which IIRC uses O_DIREC

[Qemu-devel] Re: BTRFS: Unbelievably slow with kvm/qemu

2010-07-12 Thread Josef Bacik
On Mon, Jul 12, 2010 at 05:42:04PM +0400, Michael Tokarev wrote: > Josef Bacik wrote: > [] > > O_DIRECT support was just introduced recently, please try on the latest > > kernel > > with the normal settings (which IIRC uses O_DIRECT), that should make things > > su

[Qemu-devel] Re: BTRFS: Unbelievably slow with kvm/qemu

2010-07-12 Thread Josef Bacik
On Mon, Jul 12, 2010 at 03:34:44PM +0200, Giangiacomo Mariotti wrote: > On Mon, Jul 12, 2010 at 9:09 AM, Michael Tokarev wrote: > > > > This looks quite similar to a problem with ext4 and O_SYNC which I > > reported earlier but no one cared to answer (or read?) - there: > > http://permalink.gmane.