| From: | Dave Cramer <pg(at)fastcrypt(dot)com> |
|---|---|
| To: | Luke Lonergan <LLonergan(at)greenplum(dot)com> |
| Cc: | "Adam Weisberg" <Aweisberg(at)seiu1199(dot)org>, pgsql-performance(at)postgresql(dot)org |
| Subject: | Re: Hardware/OS recommendations for large databases ( |
| Date: | 2005-11-15 14:15:04 |
| Message-ID: | B41A9E46-AC4F-4A3A-B383-AB70091745CF@fastcrypt.com |
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| Thread: | |
| Lists: | pgsql-performance |
Luke,
Have you tried the areca cards, they are slightly faster yet.
Dave
On 15-Nov-05, at 7:09 AM, Luke Lonergan wrote:
>
> I agree - you can get a very good one from www.acmemicro.com or
> www.rackable.com with 8x 400GB SATA disks and the new 3Ware 9550SX
> SATA
> RAID controller for about $6K with two Opteron 272 CPUs and 8GB of RAM
> on a Tyan 2882 motherboard. We get about 400MB/s sustained disk read
> performance on these (with tuning) on Linux using the xfs filesystem,
> which is one of the most critical factors for large databases.
>
> Note that you want to have your DBMS use all of the CPU and disk
> channel
> bandwidth you have on each query, which takes a parallel database like
> Bizgres MPP to achieve.
>
> Regards,
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