[PERFORM] Subpar Execution Plan

2007-11-06 Thread Jens-Wolfhard Schicke
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 I have a two relevant tables: fastgraph=# \d object Table "public.object" Column | Type | Modifiers - ++-- id | bigint | not null default nextval

Re: [PERFORM] dell versus hp

2007-11-06 Thread Greg Smith
On Tue, 6 Nov 2007, Dimitri Fontaine wrote: Some knowing-better-than-me people on #postgresql had the remark that depending on the write transaction volumes (40 to 60 percent of my tps, but no so much for this hardware), I could somewhat benefit in setting the WAL on the OS raid1, and having 8 r

Re: [PERFORM] dell versus hp

2007-11-06 Thread Dimitri Fontaine
Le mardi 06 novembre 2007, Tore Halset a écrit : > Interesting. Do you have any benchmarking numbers? Did you test with > software raid 10 as well? Just some basic pg_restore figures, which only make sense (for me anyway) when compared to restoring same data on other machines, and to show the eff

Re: [PERFORM] dell versus hp

2007-11-06 Thread Tore Halset
On Nov 6, 2007, at 12:36 , Claus Guttesen wrote: All of our existing servers are from Dell, but I want to look at some other options as well. We are currently looking at rack boxes with 8 internal SAS discs. Two mirrored for OS, Two mirrored for WAL and 4 in raid 10 for the base. Here are o

Re: [PERFORM] dell versus hp

2007-11-06 Thread Tore Halset
On Nov 6, 2007, at 12:53 , Dimitri Fontaine wrote: Le mardi 06 novembre 2007, Tore Halset a écrit : 1) Dell 2900 (5U) 8 * 146 GB SAS 15Krpm 3,5" 8GB ram Perc 5/i. battery backup. 256MB ram. 2 * 4 Xeon 2,66GHz In fact you can add 2 hot-plug disks on this setup, connected to the frontpane. We'v

Re: [PERFORM] dell versus hp

2007-11-06 Thread Stephen Frost
Tore, * Tore Halset ([EMAIL PROTECTED]) wrote: > All of our existing servers are from Dell, but I want to look at some other > options as well. We are currently looking at rack boxes with 8 internal SAS > discs. Two mirrored for OS, Two mirrored for WAL and 4 in raid 10 for the > base. I'm a b

Re: [PERFORM] dell versus hp

2007-11-06 Thread Dimitri Fontaine
Hi List, Le mardi 06 novembre 2007, Tore Halset a écrit : > 1) Dell 2900 (5U) > 8 * 146 GB SAS 15Krpm 3,5" > 8GB ram > Perc 5/i. battery backup. 256MB ram. > 2 * 4 Xeon 2,66GHz In fact you can add 2 hot-plug disks on this setup, connected to the frontpane. We've bought this very same model with

Re: [PERFORM] dell versus hp

2007-11-06 Thread Claus Guttesen
> All of our existing servers are from Dell, but I want to look at some > other options as well. We are currently looking at rack boxes with 8 > internal SAS discs. Two mirrored for OS, Two mirrored for WAL and 4 in > raid 10 for the base. > > Here are our current alternatives: > > 1) Dell 2900 (5U

[PERFORM] dell versus hp

2007-11-06 Thread Tore Halset
Hello. We are planning to move from MS SQL Server to PostgreSQL for our production system. Bot read and write performance are equally important. Writing is the bottleneck of our current MS SQL Server system. All of our existing servers are from Dell, but I want to look at some other opt