Date: Mon, 13 Dec 2004 13:14:56 +0000 From: Chris Elsworth <chris@shagged.org> To: Mike Jakubik <mikej@rogers.com> Cc: Steven Hartland <killing@multiplay.co.uk> Subject: Re: 2120S poor performance Message-ID: <20041213131456.GA99179@shagged.org> In-Reply-To: <3304.172.16.0.200.1102736465.squirrel@172.16.0.200> References: <20041211010849.GE50516@dragon.nuxi.com> <010b01c4df25$14af3ff0$b3db87d4@multiplay.co.uk> <3304.172.16.0.200.1102736465.squirrel@172.16.0.200>
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On Fri, Dec 10, 2004 at 10:41:05PM -0500, Mike Jakubik wrote:
> Steven Hartland said:
> > 2015S is though which is what I tested and it gives very similar poor
> > results
> > dmesg |grep asr:
> > asr0: ADAPTEC 2015S FW Rev. 3B05, 2 channel, 256 CCBs, Protocol I2O
> >
> > Does anyone have any RAID5 SCSI card installed that does give good
> > results in a straight dd test?
>
> This is what i get on the following (FreeBSD 5.3-STABLE #0: Sun Nov 7
> 03:25:47 EST 2004):
Thought I'd just throw in some pennies. Adaptec 2120 with 4 36GB 15k
drives in RAID-10 on a dual Opteron setup:
aac0: i960RX 100MHz, 48MB cache memory, optional battery present
aac0: Kernel 4.0-0, Build 6011, S/N ba9122
aac0: Supported Options=1f7e<CLUSTERS,WCACHE,DATA64,HOSTTIME,RAID50,WINDOW4GB,SOFTERR,NORECOND,SGMAP64,ALARM,NONDASD>
aacd0: <RAID 0/1> on aac0
aacd0: 70379MB (144136192 sectors)
db0# diskinfo -tv aacd0
aacd0
512 # sectorsize
73797730304 # mediasize in bytes (69G)
144136192 # mediasize in sectors
8972 # Cylinders according to firmware.
255 # Heads according to firmware.
63 # Sectors according to firmware.
Seek times:
Full stroke: 250 iter in 1.081569 sec = 4.326 msec
Half stroke: 250 iter in 1.221720 sec = 4.887 msec
Quarter stroke: 500 iter in 1.885768 sec = 3.772 msec
Short forward: 400 iter in 0.717400 sec = 1.794 msec
Short backward: 400 iter in 1.948922 sec = 4.872 msec
Seq outer: 2048 iter in 1.011799 sec = 0.494 msec
Seq inner: 2048 iter in 1.032267 sec = 0.504 msec
Transfer rates:
outside: 102400 kbytes in 1.652271 sec = 61975 kbytes/sec
middle: 102400 kbytes in 1.777489 sec = 57609 kbytes/sec
inside: 102400 kbytes in 1.593512 sec = 64261 kbytes/sec
Quite happy with those figures - I hear there's a newer kernel/bios for
the 2120 which might improve performance but I've not tried it (build 7244)
--
Chris
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