[CentOS] Write performance with 3ware 9550
Bowie_Bailey at BUC.com
Fri Oct 13 13:53:35 UTC 2006
Joshua Baker-LePain wrote:
> On Thu, 12 Oct 2006 at 7:58pm, Bowie Bailey wrote
> > With NCQ off, I get these results:
> > 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 Second 50G 20853 8 41899 11
> > 192713 23 116.9 1
> > Write performance increased by 2M/s and read performance decreased
> > by 2M/s.
> > What tweaks have you applied so far? I would expect a 4-drive array
> > to be slower than an 8-drive array, but not this much!
> What's your StorSave profile set to?
StorSave is set to Protection. Data integrity is very important on
this system, so I need to leave it as is. Besides, I don't want to
disable the data journaling after paying $100 for a BBU to protect it.
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