Subject: Re: siop(4) and tagged queuing
To: Matthew Jacob <>
From: Manuel Bouyer <>
List: current-users
Date: 10/23/2000 19:07:13
On Mon, Oct 23, 2000 at 09:58:39AM -0700, Matthew Jacob wrote:
> Almost all of your drives will do this- what you need to do is bump
> SDOUTSTANDING up above 100 or so in sd.c.

Well, OK, I'll try this on older drives, with a small cache.
BTW, is SDOUTSTANDING really used ? It seems that all drivers doing tagged
queueing override this by the number of tags they can do (siop does this) ?

> You won't see the benefits of tagged queiing on bonnie- you need a
> multithreaded test that tests multiple parts of the drive.

Ok, I though the seekers would do this.
Any benchmark to recommend ?

Manuel Bouyer, LIP6, Universite Paris VI.