Re: Performance large tables. - Mailing list pgsql-general

From Vivek Khera
Subject Re: Performance large tables.
Date
Msg-id CE02ED81-E31D-459C-A421-87422197378B@khera.org
Whole thread Raw
In response to Re: Performance large tables.  (Benjamin Arai <barai@cs.ucr.edu>)
List pgsql-general
On Dec 10, 2005, at 6:37 PM, Benjamin Arai wrote:

> For the most part the updates are simple one liners.  I currently
> commit in large batch to increase performance but it still takes a
> while as stated above.  From evaluating the computers performance
> during an update,  the system is thrashing both memory and disk.  I
> am currently using Postgresql 8.0.3.

Then buy faster disks.  My current favorite is to use U320 15kRPM
disks using a dual-chanel RAID controller with 1/2 the disks on one
channel and 1/2 on the other and mirroring them across channels, then
striping down the mirrors (ie, RAID10).

I use no fewer than 6 disks (RAID 10) for data and 2 for pg_log in a
RAID1.


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