Re: [PERFORM] performance optimzations

2003-11-13 Thread Rod Taylor
Most clients will be interested in say the last 7 days worth of data? Great.. Start out with 4GB ram on a good Dual CPU -- Opterons seem to work quite well -- and make sure the motherboard can hold double that in memory for an upgrade sometime next year when you've become popular.

Re: [PERFORM] performance optimzations

2003-11-12 Thread Rod Taylor
On Wed, 2003-11-12 at 12:34, Suchandra Thapa wrote: I'm moving a webmail service over to use a postgresql database for storage and wanted to get any tips for optimizing performance. The machine will be a multiprocessor (either 2 or 4 cpu ) system with a raid array. What layout should be

Re: [PERFORM] performance optimzations

2003-11-12 Thread Suchandra Thapa
On Wed, 2003-11-12 at 12:23, Rod Taylor wrote: On Wed, 2003-11-12 at 12:34, Suchandra Thapa wrote: I'm moving a webmail service over to use a postgresql database for storage and wanted to get any tips for optimizing performance. The machine will be a multiprocessor (either 2 or 4 cpu )

Re: [PERFORM] performance optimzations

2003-11-12 Thread Neil Conway
Suchandra Thapa [EMAIL PROTECTED] writes: I was thinking using about using a raid 1+0 array to hold the database but since I can use different array types, would it be better to use 1+0 for the wal logs and a raid 5 for the database? It has been recommended on this list that getting a RAID

Re: [PERFORM] performance optimzations

2003-11-12 Thread Suchandra Thapa
On Wed, 2003-11-12 at 16:29, Neil Conway wrote: Suchandra Thapa [EMAIL PROTECTED] writes: I was thinking using about using a raid 1+0 array to hold the database but since I can use different array types, would it be better to use 1+0 for the wal logs and a raid 5 for the database? It has

Re: [PERFORM] performance optimzations

2003-11-12 Thread Suchandra Thapa
On Wed, 2003-11-12 at 22:35, Rod Taylor wrote: You may want to consider keeping the compressed email in a separate table than the information describing it. It would mean descriptive information is more likely to be in RAM, where the body probably doesn't matter as much (you view them 1 at a