Alex Turner [EMAIL PROTECTED] writes:
a 14 drive stripe will max out the PCI bus long before anything else,
Hopefully anyone with a 14 drive stripe is using some combination of 64 bit
PCI-X cards running at 66Mhz...
the only reason for a stripe this size is to get a total accessible
size
Arshavir Grigorian wrote:
Alex Turner wrote:
[]
Well, by putting the pg_xlog directory on a separate disk/partition, I
was able to increase this rate to about 50 or so per second (still
pretty far from your numbers). Next I am going to try putting the
pg_xlog on a RAID1+0 array and see if that
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Michael Tokarev
Sent: Monday, March 14, 2005 5:47 PM
To: Arshavir Grigorian
Cc: linux-raid@vger.kernel.org; pgsql-performance@postgresql.org
Subject: Re: [PERFORM] Postgres on RAID5
Arshavir Grigorian wrote:
Alex
: Re: [PERFORM] Postgres on RAID5
Alex Turner [EMAIL PROTECTED] writes:
a 14 drive stripe will max out the PCI bus long before anything else,
Hopefully anyone with a 14 drive stripe is using some combination of 64 bit
PCI-X cards running at 66Mhz...
the only reason for a stripe this size
Arshavir Grigorian [EMAIL PROTECTED] writes:
Hi,
I have a RAID5 array (mdadm) with 14 disks + 1 spare. This partition has an
Ext3 filesystem which is used by Postgres.
People are going to suggest moving to RAID1+0. I'm unconvinced that RAID5
across 14 drivers shouldn't be able to keep up
