RE: Bad 3ware 9000 performance 5.4?
From: Vinod Kashyap (vkashyap_at_amcc.com)
Date: 05/21/05
- Previous message: Steven Hartland: "Re: Bad 3ware 9000 performance 5.4?"
- Maybe in reply to: Alexis Yushin: "Bad 3ware 9000 performance 5.4?"
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To: Alexis Yushin <alexis@ww.net>, freebsd-performance@freebsd.org Date: Fri, 20 May 2005 15:13:06 -0700
> -----Original Message-----
> From: owner-freebsd-performance@freebsd.org
> [mailto:owner-freebsd-performance@freebsd.org]On Behalf Of
> Alexis Yushin
> Sent: Thursday, May 19, 2005 8:14 PM
> To: freebsd-performance@freebsd.org
> Subject: Bad 3ware 9000 performance 5.4?
>
>
> Hi,
>
> I've been browsing through the mailing list archive, but
> could not find the
> answer/conclusion/solution to this...
>
> Running FreeBSD 5.4... three machines with twe/3ware 8000 and
> three twa/
> 3ware 9500-8 controllers. All of them running RAID 1+0
> without write cache
> since we dont have battery backup unit. All of them Seagate 7200 SATA.
>
> I get about 46Mb/s write on the 8000 series and only 5(!)MB/s
> on the 9500 series.
>
> How is this possible? Machines are in production so I can do
> very little
> testing... Any ideas?
>
You have to have write caching enabled to get better write performance.
If you see bad numbers even with caching enabled, check to see if
all drives/cables are ok.
>
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- Previous message: Steven Hartland: "Re: Bad 3ware 9000 performance 5.4?"
- Maybe in reply to: Alexis Yushin: "Bad 3ware 9000 performance 5.4?"
- Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]
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