| From: | Mark Kirkwood <markir(at)paradise(dot)net(dot)nz> |
|---|---|
| To: | Steve Crawford <scrawford(at)pinpointresearch(dot)com>, pgsql-general(at)postgresql(dot)org |
| Subject: | Re: Recomended FS |
| Date: | 2003-10-21 05:56:52 |
| Message-ID: | 3F94CAA4.3090404@paradise.net.nz |
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| Lists: | pgsql-general |
Some sort of ATA Raid is probably worth considering -
e.g. I am experimenting with a system using 2 ATA-66 Seagates + 1
Promise TX2000
The disks themselves give fairly poor performance when attached to the
std IDE channels :
sequential write 15Mb/s
sequential read 20Mb/s
But attached to the Promise card using RAID 0 do considerably better:
sequential write 52Mb/s
sequential read 52MB/s
Now you would probably not use RAID 0 for a "real" system (unless you
had good backups), but the difference is interesting
Note that even including the card, this is a very cheap setup.
(I have not gotten around to testing random read and writes, but if
anybody is interested I can test this and supply figures)
regards
Mark
Steve Crawford wrote:
>
>
>Talk about timing...this article posted today seems quite apropos
>(spoiler: SCSI beats IDE):
>
>http://hardware.devchannel.org/hardwarechannel/03/10/20/1953249.shtml?tid=20&tid=38&tid=49
>
>
>
>
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