Richard Sharpe wrote (ao): > I am running on 3.2.1 and have set up btrfs across 11 7200RPM 1TB 3.5" > drives. I told btrfs to mirror metadata and stripe data.
> However, what I would like to know is are there any tuning parameters > I can tweak to push the numbers up a bit? > > I see lots of idle time (80+%) on my 16 cores (probably two by four by two). Do you have a partition on the disks? On a partitionless disk you don't have to deal with aligning. You could try mkfs.btrfs -l 32k -n 32k as per http://www.mail-archive.com/[email protected]/msg14585.html Depending on the nature of your data, you could try with zlib, lzo or snappy compression. I'd say dd is a lousy benchmarktool btw. Sander -- Humilis IT Services and Solutions http://www.humilis.net -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
