From owner-freebsd-scsi Thu Sep 2 8:10:28 1999 Delivered-To: freebsd-scsi@freebsd.org Received: from panzer.kdm.org (panzer.kdm.org [216.160.178.169]) by hub.freebsd.org (Postfix) with ESMTP id 60A6F15B61 for ; Thu, 2 Sep 1999 08:10:24 -0700 (PDT) (envelope-from ken@panzer.kdm.org) Received: (from ken@localhost) by panzer.kdm.org (8.9.3/8.9.1) id JAA07293; Thu, 2 Sep 1999 09:09:36 -0600 (MDT) (envelope-from ken) Message-Id: <199909021509.JAA07293@panzer.kdm.org> Subject: Re: command delay offset In-Reply-To: <199909021452.QAA11609@gw0.boostworks.com> from Remy Nonnenmacher at "Sep 2, 1999 04:52:07 pm" To: remy@synx.com Date: Thu, 2 Sep 1999 09:09:36 -0600 (MDT) Cc: freebsd-scsi@FreeBSD.ORG From: "Kenneth D. Merry" X-Mailer: ELM [version 2.4ME+ PL54 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-scsi@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Remy Nonnenmacher wrote... > On 1 Sep, Kenneth D. Merry wrote: > > Remy Nonnenmacher wrote... > >> .. > >> what is the 'command delay offset' (aka offset) role ? What values can > >> be set via camcontrol negotiate -O ? > > > >... > > In networking terms, it's the window size. > >... > > Can I expect more performance by using a greater value ? It is probably already negotiated to be as high as it can go. You can try setting it higher (if possible), and see whether your performance improves. > (Context is 3250U2W with LVD disks). Don't you mean a 3950? Ken -- Kenneth Merry ken@kdm.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message