Disk Benchmark

Customers should expect their VPS to have performance similar, but not necessarily as fast as, a SATA disk. Despite the fact that we'd prefer to set lackluster expectations, the reality is that our disks are quite fast according to these benchmarks run 10/2/2009.

Analysis shows that random seeks are equivalent to average SSD disk levels, while throughput is similar to a local SATA disk. Some measurements were below that of the physical machine's SATA disk, but well within reasonable expectations. ('+' means too fast to measure)

Feedback on these results is encouraged.

TEST COMMAND:

mkdir /tmp/x
bonnie++ -u nobody -d /tmp/x -s 1536

Machine 1 (VPS)

MACHINE: "anonsys" on fury.grokthis.net, 64MB of RAM, 4GB disk, 1.5GB file

Version  1.03       ------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
anonsys       1536M 19167  53 16144   2 19803   2 25075  53 45180   0 225.0   0
                    ------Sequential Create------ --------Random Create--------
                    -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
              files  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
                 16 +++++ +++ +++++ +++ +++++ +++ +++++ +++ +++++ +++ +++++ +++

Machine 2 (Physical)

MACHINE: "eric-desktop" /w 2GB of RAM, 80GB SATA-2 disk, 1.5GB file

Version 1.03c       ------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
eric-desktop  1536M 29061  59 34924  15 17136   6 17020  40 39119   7 136.7   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 28520  68 +++++ +++ 32362  69 +++++ +++ +++++ +++ +++++ +++
eric-desktop,1536M,29061,59,34924,15,17136,6,17020,40,39119,7,136.7,1,16,28520,68,+++++,+++,32362,69,+++++,+++,+++++,+++,+++++,+++