Re: linux distro for better pg performance

From: Joseph Shraibman <jks(at)selectacast(dot)net>
To: "J(dot) Andrew Rogers" <jrogers(at)neopolitan(dot)com>
Subject: Re: linux distro for better pg performance
Date: 2004-05-04 02:30:48
Message-ID: 40970058.3040608@selectacast.net
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J. Andrew Rogers wrote:

> Do these features make a difference? Far more than you would imagine.
> On one postgres server I just upgraded, we went from a 3Ware 8x7200-RPM
> RAID-10 configuration to an LSI 320-2 SCSI 3x10k RAID-5, with 256M

Is raid 5 much faster than raid 10? On a 4 disk array with 3 data disks
and 1 parity disk, you have to write 4/3rds the original data, while on
raid 10 you have to write 2 times the original data, so logically raid 5
should be faster.

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