I know quite a few of you are following the development of our new cloud hosting platform closely, so here are some very initial result from some brief disk testing. First up we have the standard Linux hdparm, nothing too strenuous, but it does give a quick idea as to disk performance:
/dev/sda1:
Timing cached reads: 23004 MB in 1.99 seconds = 11575.07 MB/sec
Timing buffered disk reads: 336 MB in 3.02 seconds = 111.37 MB/sec
As you can see we’re getting 111MB/s – not bad for initial test, and something confirmed by Bonnie++ – A far more strenuous disk test:
Version 1.03e ------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
karl-test3.sheff 4G 61756 79 121058 17 50688 1 51968 54 111809 0 5428 0
------Sequential Create------ --------Random Create--------
-Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
512 45927 71 315487 99 2746 2 44193 69 392805 100 2221 2
Bonnie backs up our initial numbers from hdparm, which is nice to see – and does so without using 100% CPU for either reads or writes.
These are very preliminary numbers – we’ve not even got multipath running to the SANs yet or the HA going – in theory we could get 4x those numbers with both of those items up and running. We’ve also not got all the disks running on the SAN either for those tests, in fact that’s only running off of 4 disks, in production each SAN will have 8 disks in the SAN head end plus at least 1 x 16 Bay Disk Tray as well.
We’ll have more numbers as the testing progresses, also if there is anything you’d like us to test then please do let us know.