Subject: Re: 3ware RAID controller slow?
To: Michael van Elst <firstname.lastname@example.org>
From: Jukka Marin <email@example.com>
Date: 10/29/2007 00:04:47
On Sun, Oct 28, 2007 at 10:55:53PM +0100, Michael van Elst wrote:
> On Sun, Oct 28, 2007 at 10:50:31PM +0200, Jukka Marin wrote:
> > No swap is in use, if that's what you mean. But no, 4 GB of RAM is not
> > enough to buffer 10 GB files.. :)
> I guess this is the problem. When you run out of buffers then the
> VM system and thus the file cache gets very slow.
Then why is RAID5 slow and a plain disk isn't (when extracting the same
pkgsrc tarball)? I'm trying to find out whether I can use RAID5 or not,
that's why I'm asking ;)
(Although I need to find a way to break the 2 TB disklabel barrier first..)