On Thu, May 12, 2011 at 4:39 PM, Josef Bacik <josef@xxxxxxxxxx> wrote: > 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 – 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 000’s) >> 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 > Hi Josef Forgive me as i am a 'storage guy' - so when you say pull down linus's git tree and test.... do you mean grab the latest kernel? i know very stupid question, but just want to make sure i get it right... if so, then yes i will and i will add some more storage power also to see if it scales. THank you -- 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
