On Wed, May 11, 2011 at 11:33:35PM +0100, Marek Fstump wrote: > Hi > > I am very interested in using BTRFS for my solution but in basic tests > it seems to be very poor on read and write performance. I am > surprised by this so suspect that maybe I am doing something > incorrectly or that there are updates I should be using, but I am not > sure how I update BTRFS on SLES11 > > Summary: > RESULTS on link below > SLES11 SP1 > Compared Sequential read/write performance against XFS and OCFS2 > Backend storage â FusionIO SLC SSD = circa 750MBsec > > Tests set as follows: > Filesystem contains 30 x 4GB files (made of random data) > Read tests will read from 1 to 30 files concurrently > Write tests will write 1 to 30 concurrent NEW files (simple 000âs) > dd -direct flag used on writes > > All defaults used for mounting etc. > > Results shown in attachment. > > BTRFS looks an excellent FS and perfect for my application and I am > hoping that there are some factors that I am missing > and would appreciate any advice / help > Yeah our O_DIRECT performance is less than stellar, I just did a bunch of work to try and help us get a little better performance. Would you mind pulling down linus's git tree and testing on that and seeing if you get better performance? Thanks, Josef -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
