Subject: Re: siop(4) and tagged queuing
To: Thor Lancelot Simon <email@example.com>
From: Manuel Bouyer <firstname.lastname@example.org>
Date: 10/24/2000 16:46:38
On Mon, Oct 23, 2000 at 11:09:56PM -0400, Thor Lancelot Simon wrote:
> I think the "leaky bucket" algorithm Matt proposed is the correct one. It
> is *not* the case that drives always report QUEUE FULL at the same number of
> tags, and some drives that occasionally report QF at a small number of tags
> really want a large number to perform well.
Yes, I figured that out on my old quantum fireball as well.
Anyway, the current scsipi code limits the number of tags to 4, so
QUEUE FULL status should be really rare.
I'll try to change this in the future ...
Manuel Bouyer, LIP6, Universite Paris VI. Manuel.Bouyer@lip6.fr