From owner-freebsd-stable@FreeBSD.ORG Mon Nov 28 21:14:47 2005 Return-Path: X-Original-To: stable@freebsd.org Delivered-To: freebsd-stable@FreeBSD.ORG Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 1E65416A41F for ; Mon, 28 Nov 2005 21:14:47 +0000 (GMT) (envelope-from kris@obsecurity.org) Received: from elvis.mu.org (elvis.mu.org [192.203.228.196]) by mx1.FreeBSD.org (Postfix) with ESMTP id C136643D80 for ; Mon, 28 Nov 2005 21:14:42 +0000 (GMT) (envelope-from kris@obsecurity.org) Received: from obsecurity.dyndns.org (elvis.mu.org [192.203.228.196]) by elvis.mu.org (Postfix) with ESMTP id 8B7AF1A3C33; Mon, 28 Nov 2005 13:14:41 -0800 (PST) Received: by obsecurity.dyndns.org (Postfix, from userid 1000) id CBCEB51593; Mon, 28 Nov 2005 16:14:40 -0500 (EST) Date: Mon, 28 Nov 2005 16:14:40 -0500 From: Kris Kennaway To: Eirik ?verby Message-ID: <20051128211440.GB28963@xor.obsecurity.org> References: <93F6B911-8C64-4F5C-81F9-80EC271ED298@anduin.net> <84dead720511280545v2bc0bc35jd107da06b9a788cb@mail.gmail.com> <20187843-76FC-4EAB-AFF8-7493FB0C0077@anduin.net> <84dead720511280654j138635abgcb9cc0978e6c26b7@mail.gmail.com> <02757598-222D-408E-8B33-C2EE1E6E426E@anduin.net> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="IrhDeMKUP4DT/M7F" Content-Disposition: inline In-Reply-To: <02757598-222D-408E-8B33-C2EE1E6E426E@anduin.net> User-Agent: Mutt/1.4.2.1i Cc: stable@freebsd.org, Joseph Koshy Subject: Re: Reduced java/tomcat performance 6-beta3 -> 6-stable ? X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 28 Nov 2005 21:14:47 -0000 --IrhDeMKUP4DT/M7F Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Nov 28, 2005 at 09:54:30PM +0100, Eirik ?verby wrote: > Hi, >=20 > I think I have found the culprit. There must be some sort of =20 > difference between the machines after all (BIOS revision?), because =20 > while on one machine the interrupt rate for the bge card stays very =20 > low (2 to be exact) during maximum load, the other machine goes =20 > beyond 1000 and keeps rising constantly. This might also explain why =20 > performance slowly degrades over time on that machine, and response =20 > times vary wildly, while the "fast" machine responds nicely within =20 > 1-2 seconds no matter the load and testing time. >=20 > I will have to investigate this more closely. Is there a way to force =20 > the NIC to polling mode (I'm assuming that is the difference, an IRQ =20 > rate of 2 is too low for a heavily loaded server if the NIC is =20 > interrupt-driven)? >=20 > Anything else I could look at? BIOS update. Kris --IrhDeMKUP4DT/M7F Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2 (FreeBSD) iD8DBQFDi3NAWry0BWjoQKURAhf0AJ0eom+7CQoHFy/SLzGSuG3E0CErxACfe/+V BI/55LctOdXE/9BS0us4KAo= =3MQQ -----END PGP SIGNATURE----- --IrhDeMKUP4DT/M7F--