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btrfs 0.13 and XFS benchmarks

Posted By Chris Samuel On In Linux | Comments Disabled

Back in February Chris Mason announced [1] btrfs [2] 0.13, so I thought I’d give it a quick go as I’d not touched it since testing btrfs 0.5 [3] back in August. Back then, on some pretty meaty hardware, there was a considerable difference between XFS and btrfs and I was curious as to how they’d compare now.

The test hardware this time is a quad core Intel box with 8GB RAM and a pair of 750GB SATA drives in a RAID-1 mirror. It is running Kubuntu Hardy Heron (now in beta) with a 2.6.25-rc6 kernel.

A quick blast with Bonnie++ surprised me, btrfs matched XFS for read, writes and rewrites (though with higher CPU usage, presumably due to the fact that it’s checksuming all the data) and then blew XFS away for meta-data operations.

Operation XFS btrfs
Block write (KB/s) 50572 42087
Block rewrite (KB/s) 23739 23296
Block read (KB/s) 52512 53108
Sequential creates (/s) 4095 23569
Sequential deletes (/s) 3404 15901
Random creates (/s) 1819 27919
Random deletes (/s) 1397 21561

Here are the full results:

XFS

Version 1.03b       ------Sequential Output------ --Sequential Input- --Random-
                    -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Machine        Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP  /sec %CP
quad            16G           50572  10 23739   4           52512   6 431.6   1
                    ------Sequential Create------ --------Random Create--------
                    -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
              files  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
                 16  4095  19 +++++ +++  3404  14  1819   8 +++++ +++  1397   6

real    23m32.841s
user    0m1.340s
sys     1m33.566s

btrfs

Version 1.03b       ------Sequential Output------ --Sequential Input- --Random-
                    -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Machine        Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP  /sec %CP
quad            16G           42087  42 23296   7           53108   9 345.9   1
                    ------Sequential Create------ --------Random Create--------
                    -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
              files  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
                 16 23569 100 +++++ +++ 15901  99 27919 100 +++++ +++ 21561 100

real    24m28.868s
user    0m1.436s
sys     4m18.040s

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