| To: | Hannes Dorbath <light@xxxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: Software RAID5 Horrible Write Speed On 3ware Controller!! |
| From: | Justin Piszcz <jpiszcz@xxxxxxxxxxxxxxx> |
| Date: | Wed, 18 Jul 2007 07:38:12 -0400 (EDT) |
| Cc: | Gabor Gombas <gombasg@xxxxxxxxx>, linux-ide-arrays@xxxxxxxxxxxxxxxxx, xfs@xxxxxxxxxxx, linux-raid@xxxxxxxxxxxxxxx, linux@xxxxxxxxxxxxxxx |
| In-reply-to: | <469DFB6B.2000103@xxxxxxxxxxxxxxxxxxxx> |
| References: | <Pine.LNX.4.64.0707180614480.7659@xxxxxxxxxxxxxxxx> <20070718110525.GF13772@xxxxxxxxxxxxxxxxxxxxx> <Pine.LNX.4.64.0707180718000.7659@xxxxxxxxxxxxxxxx> <469DF8D3.8020908@xxxxxxxxxxxxxxxxxxxx> <Pine.LNX.4.64.0707180732140.7659@xxxxxxxxxxxxxxxx> <469DFB6B.2000103@xxxxxxxxxxxxxxxxxxxx> |
| Sender: | xfs-bounce@xxxxxxxxxxx |
On Wed, 18 Jul 2007, Hannes Dorbath wrote: On 18.07.2007 13:32, Justin Piszcz wrote:Yes I agree here, but I guess my question is why is SW RAID5 so slow on the 3ware card?I think the controller does disable the drives write cache when exported unconfigured. It does always disable, unless you put the drive in a unit and explicit set the profile to `Performance'.-- Regards, Hannes Dorbath Ahh, that could explain it! |
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