atom feed57 messages in org.freebsd.freebsd-amd64suggestions for SATA RAID cards
FromSent OnAttachments
Willem Jan WithagenAug 23, 2006 8:01 am 
Steven HartlandAug 23, 2006 8:23 am 
Willem Jan WithagenAug 23, 2006 10:01 am 
Steven HartlandAug 23, 2006 10:55 am 
Bob WillcoxAug 23, 2006 12:02 pm 
Greg MartinAug 23, 2006 3:05 pm 
Willem Jan WithagenAug 23, 2006 3:14 pm 
Freddie CashAug 23, 2006 3:26 pm 
Greg MartinAug 23, 2006 3:45 pm 
Nikolas BrittonAug 23, 2006 3:46 pm 
Willem Jan WithagenAug 23, 2006 3:52 pm 
Nikolas BrittonAug 23, 2006 4:13 pm 
Nikolas BrittonAug 23, 2006 4:35 pm 
Dan LangilleAug 23, 2006 8:07 pm 
Francisco ReyesAug 24, 2006 12:36 am 
Andreas KlemmAug 24, 2006 5:39 am 
Nikolas BrittonAug 24, 2006 6:39 am 
Daniel O'ConnorAug 24, 2006 7:56 am 
Nikolas BrittonAug 24, 2006 4:22 pm 
ScottAug 24, 2006 4:41 pm 
Darren PilgrimAug 24, 2006 5:06 pm 
David O'BrienAug 24, 2006 6:19 pm 
David O'BrienAug 24, 2006 6:26 pm 
Daniel O'ConnorAug 25, 2006 12:03 am 
Mark KirkwoodAug 25, 2006 1:48 am 
Dan LangilleAug 26, 2006 4:22 pm 
Francisco ReyesAug 27, 2006 3:08 am 
Dan LangilleAug 27, 2006 2:19 pm 
Francisco ReyesAug 27, 2006 4:36 pm 
Dan LangilleAug 27, 2006 8:57 pm 
Francisco ReyesAug 28, 2006 2:21 pm 
Dan LangilleAug 28, 2006 10:18 pm 
Barkley VowkAug 29, 2006 8:10 pm 
Albert ChinAug 31, 2006 7:23 pm 
Jo RhettSep 7, 2006 6:47 pm 
Fabian WenkSep 7, 2006 9:07 pm 
Steven HartlandSep 7, 2006 9:24 pm 
Jo RhettSep 7, 2006 10:06 pm 
Steven HartlandSep 8, 2006 9:14 am 
Gibson, Jasen (GE Indust, ConsInd, consultant)Sep 8, 2006 12:22 pm 
Jo RhettSep 8, 2006 4:16 pm 
Mark KirkwoodSep 9, 2006 1:00 am 
Steven HartlandSep 9, 2006 6:34 am 
Steven HartlandSep 9, 2006 6:52 am 
Mark KirkwoodSep 9, 2006 8:38 am 
Mark KirkwoodSep 9, 2006 4:32 pm 
Chris HedleyOct 2, 2006 10:02 am 
Gibson, Jasen (GE Indust, ConsInd, consultant)Oct 4, 2006 6:12 am 
Steven HartlandOct 4, 2006 6:58 am 
Chris HedleyOct 4, 2006 7:37 am 
Pete FrenchOct 4, 2006 7:49 am 
Gibson, Jasen (GE Indust, ConsInd, consultant)Oct 4, 2006 7:53 am 
Matthew D. FullerOct 4, 2006 7:59 am 
Pete FrenchOct 4, 2006 8:11 am 
Matthew D. FullerOct 4, 2006 8:21 am 
Pete FrenchOct 4, 2006 9:36 am 
Chris BeHannaOct 4, 2006 10:00 am 
Subject:suggestions for SATA RAID cards
From:Steven Hartland (kill@multiplay.co.uk)
Date:Oct 4, 2006 6:58:57 am
List:org.freebsd.freebsd-amd64

Gibson, Jasen (GE Indust, ConsInd, consultant) wrote:

I'm using the same card, Chris. My setup is a Tyan S2881 dual Opteron board and 4 WD RE2 400GB drives in a RAID 5. My speed varies greatly, depending how large a file I'm accessing (which is an expected result, I think). Files less than a GB, write at about around 130MB/s, read between 400-600MB/s (have not ruled out whether cache is helping boost this number).

Thats cached for sure. Files over 10GB

this drops to a read speed of 40GB, like you've seen. But the write speed will stay up at around 90! It's very odd. I've been seeing similar posts to this for a while now, concerning Highpoint, 3ware, Qlogic, and Adaptec cards and freebsd 5.4+; it almost makes me wonder if there's not another factor here, drivers or something.

I had similar issues as you say with read being much slower than write using a highpoint controller the fix was to change the default block size of the array to the min the controller supported.

Steve

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