From owner-freebsd-net Sun Oct 20 23:26:18 2002 Delivered-To: freebsd-net@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 098E637B401 for ; Sun, 20 Oct 2002 23:26:17 -0700 (PDT) Received: from silver.he.iki.fi (silver.he.iki.fi [193.64.42.241]) by mx1.FreeBSD.org (Postfix) with ESMTP id B53F243E77 for ; Sun, 20 Oct 2002 23:26:15 -0700 (PDT) (envelope-from pete@he.iki.fi) Received: from PHE (silver.he.iki.fi [193.64.42.241]) by silver.he.iki.fi (8.12.6/8.11.4) with SMTP id g9L6QBYj080410; Mon, 21 Oct 2002 09:26:13 +0300 (EEST) (envelope-from pete@he.iki.fi) Message-ID: <04da01c278ca$d29a9c30$3500080a@PHE> From: "Petri Helenius" To: "Don Bowman" Cc: References: Subject: Re: ENOBUFS Date: Mon, 21 Oct 2002 09:26:41 +0300 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 8bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1106 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org >The idle time in a bridging application remains more or less >constant for the bge, regardless of load. This stayed at around >9% of my CPU. For the em, the idle time decreased as I increased >the load, to end up using about double the CPU for the same load. >I will post results when I have them done. That would be great, thanks. >>However, if I understand correctly, PCI-X would allow optimizations >>that are not present on the em driver? >I'm not sure what these optimisations would be other than clock >rate which the driver doesn't care about. I understood that there are ways to put more stuff onto a single transfer. Iīm not a PCI expert so I might be just making up things here. >Watch that your GE cards use a 64-bit bus, and stay at at least >66MHz. For PCI-X, a single device can run @ 133, 2 @ 100, more than >2 @ 66MHz. In the supermicro servers I have, one of the 2 slots >is better than the other since its only used by the expansion. Yes, I already got burned using the slot on the same bus than the emīs for 33MHz card. Now the chips should be running 100/64 but I have yet to figure out a way to verify this on a running OS. I have the 1U servers so thatīs why Iīm more biased towards the em, due to the fact that they come on the motherboard. Pete To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message