Re: RAID + PostgreSQL?

[Scott Marlowe <smarlowe(at)g2switchworks(dot)com>]

On Tue, 2006-06-27 at 08:05, Franz(dot)Rasper(at)izb(dot)de wrote:
> I have here HP DL 380 G3 und HP DL 380 G4. (here Smart Array 5i and Smart
> Array 6i)
> Maybe there are problems with old linux kernel (but as far as i know >
> 2.4.27)
> I dont know about such performance problems, maybe the conrollers are faster
> under windows. 
> 
> The battery backup write cache are very import for inserts.
> 
> You should use for performance test with dd under linux larger blocksizes,
> but you should compare postgresql under linux and windows (selects, update,
> inserts, etc.)

Note that having the latest driver usually helps a lot too.

The LSI megaraid was solid but a mediocre performer with the older 1.18
driver, but the 2.x series driver was much faster when I tested it.