[Date Prev][Date Next] [Thread Prev][Thread Next] [Date Index] [Thread Index]

Re: Debugging severe performance problems

On Tuesday 27 December 2005 11:53, Gonzalo HIGUERA DÍAZ wrote:
> Given the three scenarios you give, specially the first and maybe
> also the third, disk access is a likely candidate. Check with hdparm
> whether the HDD-chipset is using the best transfer mode available
> (some DMA mode, given the hardware).

Uh-ouch. Yeah, I really thought that I used DMA, but when you said it, I 
checked, and indeed it wasn't turned on in the kernel config. I needed 
a recompile anyway, and I was sure to enable it.

My first impression is that this really did the trick! Thanks a lot!


Kjetil Kjernsmo
Programmer / Astrophysicist / Ski-orienteer / Orienteer / Mountaineer
Homepage: http://www.kjetil.kjernsmo.net/     OpenPGP KeyID: 6A6A0BBC

Reply to: