On Mon, 12 Aug 2002, Chris Ruprecht wrote:
> I have set up a RAID-5 (soft RAID) arrray on my Linux machine,
> consisting of 5 18 GB UltraSCSI-2 (80 MB/sec) drives. Everythinng is
> working but I would like to know, where I can tweak this for optimum
> performance.
If you do a lot of inserts, move the log file ($PGDATA/pg_xlog)
off the RAID-5 and on to a separate RAID-1 (mirrored) pair. This will
separate the buffered random writes to the data files and the unbuffered,
sequential writes to the log.
cjs
--
Curt Sampson <cjs@cynic.net> +81 90 7737 2974 http://www.netbsd.org
Don't you know, in this new Dark Age, we're all light. --XTC
