| From: | Richard Huxton <dev(at)archonet(dot)com> |
|---|---|
| To: | Dave Cramer <pg(at)fastcrypt(dot)com> |
| Cc: | Luke Lonergan <llonergan(at)greenplum(dot)com>, Greg Stark <gsstark(at)mit(dot)edu>, Joshua Marsh <icub3d(at)gmail(dot)com>, pgsql-performance(at)postgresql(dot)org |
| Subject: | Re: Hardware/OS recommendations for large databases ( |
| Date: | 2005-11-18 13:22:41 |
| Message-ID: | 437DD5A1.1090605@archonet.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-performance |
Dave Cramer wrote:
>
> On 18-Nov-05, at 1:07 AM, Luke Lonergan wrote:
>
>> Postgres + Any x86 CPU from 2.4GHz up to Opteron 280 is CPU bound after
>> 110MB/s of I/O. This is true of Postgres 7.4, 8.0 and 8.1.
>>
>> A $1,000 system with one CPU and two SATA disks in a software RAID0 will
>> perform exactly the same as a $80,000 system with 8 dual core CPUs
>> and the
>> world's best SCSI RAID hardware on a large database for decision support
>> (what the poster asked about).
>
>
> Now there's an interesting line drawn in the sand. I presume you have
> numbers to back this up ?
>
> This should draw some interesting posts.
Well, I'm prepared to swap Luke *TWO* $1000 systems for one $80,000
system if he's got one going :-)
--
Richard Huxton
Archonet Ltd
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