On 2/8/2012 8:24 PM, Bill Cole wrote: > I would stay away from btrfs until it is much more mature. As a general > rule (very general) mail systems stress allocation and metadata > efficiency more than sustained data flow, so you'd want to avoid options > like the older versions of XFS.
"older versions of XFS" in this context would be kernel versions 2.6.35 and earlier. 2.6.36 introduced the delayed logging patch which makes XFS metadata performance equal to and greater than EXT4, depending on concurrency level. At 8 threads or more XFS with delaylog has the best metadata performance of any Linux FS. -- Stan
