From owner-freebsd-net@FreeBSD.ORG Tue Oct 28 11:29:17 2008 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id C01241065673 for ; Tue, 28 Oct 2008 11:29:17 +0000 (UTC) (envelope-from freebsd-net@m.gmane.org) Received: from ciao.gmane.org (main.gmane.org [80.91.229.2]) by mx1.freebsd.org (Postfix) with ESMTP id 780268FC0A for ; Tue, 28 Oct 2008 11:29:17 +0000 (UTC) (envelope-from freebsd-net@m.gmane.org) Received: from list by ciao.gmane.org with local (Exim 4.43) id 1Kuml7-0006He-I6 for freebsd-net@freebsd.org; Tue, 28 Oct 2008 11:29:13 +0000 Received: from lara.cc.fer.hr ([161.53.72.113]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Tue, 28 Oct 2008 11:29:13 +0000 Received: from ivoras by lara.cc.fer.hr with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Tue, 28 Oct 2008 11:29:13 +0000 X-Injected-Via-Gmane: http://gmane.org/ To: freebsd-net@freebsd.org From: Ivan Voras Date: Tue, 28 Oct 2008 12:29:54 +0100 Lines: 50 Message-ID: References: <200810281235.53508.gizmen@blurp.pl> <4906EC8D.7070503@freebsd.org> <4906EE31.3080400@samoylyk.sumy.ua> <200810281309.58262.bartosz.giza@korbank.pl> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enig05561AD4701EB83529FE6215" X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: lara.cc.fer.hr User-Agent: Thunderbird 2.0.0.17 (X11/20080925) In-Reply-To: <200810281309.58262.bartosz.giza@korbank.pl> X-Enigmail-Version: 0.95.0 Sender: news Subject: Re: two NIC on 2 core system (scheduling problem) X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 28 Oct 2008 11:29:17 -0000 This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig05561AD4701EB83529FE6215 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Bartosz Giza wrote: > Tuesday 28 of October 2008 11:49:21 Oleksandr Samoylyk napisa=C5=82(a):= >> Ivan Voras wrote: >>> Bartosz Giza wrote: >>>> Another question is why em0 taskq is eating so much cpu ? BGE >>>> interface is actually one that pushes 2 times more packets than em0 >>>> and it uses about half cpu comparing to em0. Is that not strange ? >>>> Could someone tell my why is this happening ? BGE is faster ? or may= be >>>> i can tune some >>> I have the same problem - em0 taskq eating incredible amounts of CPU.= >>> If you find a solution, contact me! >> It could be not just a problem with em driver. >> Firstly, it's good to make profiling and find out what exactly eats CP= U >> time. >=20 > Yes, we should make some profiling, but it is quite hard on busy produc= tion=20 > router. When i turn on pooling on em0 card swi1: net is using about 3% = of=20 > cpu. So it is quite big difference between 20% with tasq and 3% with=20 > polling. Is the difference reflected in your system / idle CPU time? (i.e. does your idle time increase for ~~ 17%?) --------------enig05561AD4701EB83529FE6215 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFJBveyldnAQVacBcgRAqQIAJ9kVHmIeN+wnD2QRWRDdFjfEi0FVACg4v6K FTNx57pbpYQ+Bb1O3GJXLSM= =QJDm -----END PGP SIGNATURE----- --------------enig05561AD4701EB83529FE6215--