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 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

Re: [PERFORM] performance optimzations

2003-11-12 Thread Rod Taylor
> > How much in total storage? If you have (or will have) > ~6 disks, go > > for RAID 5 otherwise 10 is probably appropriate. > > I'm not sure but I believe there are about 6-8 10K scsi drives on the > system. There is quite a bit of storage to spare currently so I think I see.. With 8 drives

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? >

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 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 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 u

[PERFORM] performance optimzations

2003-11-12 Thread Suchandra Thapa
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 used? I was thinking using about using a raid 1+0 array to h