On Wed, 14 Nov 2007, Merlin Moncure wrote:
On Nov 14, 2007 5:24 PM, Alan Hodgson <ahodgson@xxxxxxxxx> wrote:
On Tuesday 13 November 2007, Jeff Frost <jeff@xxxxxxxxxxxxxxxxxxxxxx> wrote:
Ok, Areca ARC1261ML. Note that results were similar for an 8 drive RAID6
vs 8 drive RAID10, but I don't have those bonnie results any longer.
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 14xRAID6 63G 73967 99 455162 58 164543 23 77637 99
438570 31 912.2 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 12815 63 +++++ +++ 13041 61 12846 67 +++++ +++ 12871 59
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 14xRAID10 63G 63968 92 246143 68 140634 30 77722 99
510904 36 607.8 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 6655 16 +++++ +++ 5755 12 7259 17 +++++ +++ 5550 12
OK, impressive RAID-6 performance (not so impressive RAID-10 performance,
but that could be a filesystem issue). Note to self; try an Areca
controller in next storage server.
607 seeks/sec on a 8 drive raid 10 is terrible...this is not as
dependant on filesystem as sequential performance...
Then this must be horrible since it's a 14 drive raid 10. :-/ If we had more
time for the testing, I would have tried a bunch of RAID1 volumes and
used software RAID0 to add the +0 bit and see how that performed.
Merlin, what sort of seeks/sec from bonnie++ do you normally see from your
RAID10 volumes?
On an 8xRAID10 volume with the smaller Areca controller we were seeing around
450 seeks/sec.
--
Jeff Frost, Owner <jeff@xxxxxxxxxxxxxxxxxxxxxx>
Frost Consulting, LLC http://www.frostconsultingllc.com/
Phone: 650-780-7908 FAX: 650-649-1954
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