Date: Tue, 28 Oct 2008 12:29:54 +0100 From: Ivan Voras <ivoras@freebsd.org> To: freebsd-net@freebsd.org Subject: Re: two NIC on 2 core system (scheduling problem) Message-ID: <ge6t20$7n1$1@ger.gmane.org> In-Reply-To: <200810281309.58262.bartosz.giza@korbank.pl> References: <200810281235.53508.gizmen@blurp.pl> <4906EC8D.7070503@freebsd.org> <4906EE31.3080400@samoylyk.sumy.ua> <200810281309.58262.bartosz.giza@korbank.pl>
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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--
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