Date: Sat, 10 Jun 2006 17:17:37 +0200 From: Christian Brueffer <brueffer@FreeBSD.org> To: Brad <brad@comstyle.com> Cc: Mikhail Teterin <mi+mx@aldan.algebra.com>, net@freebsd.org Subject: Re: Can't turn on Jumbo Frames on bge0 Message-ID: <20060610151737.GA4451@haakonia.hitnet.RWTH-Aachen.DE> In-Reply-To: <20060610001900.GH22853@blar.home.comstyle.com> References: <200606091949.07501.mi%2Bmx@aldan.algebra.com> <20060609235734.GG22853@blar.home.comstyle.com> <200606092005.47852.mi%2Bmx@aldan.algebra.com> <20060610001900.GH22853@blar.home.comstyle.com>
next in thread | previous in thread | raw e-mail | index | archive | help
--k+w/mQv8wyuph6w0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, Jun 09, 2006 at 08:19:00PM -0400, Brad wrote: > On Fri, Jun 09, 2006 at 08:05:47PM -0400, Mikhail Teterin wrote: > > ?'?????? 09 ??????? 2006 19:57, Brad ???????: > > > There is a mistake on that web-page. None of Broadcom's PCI Express > > > chipsets support Jumbo frames. > >=20 > > Indeed. Our bge(4) manual page says: > >=20 > > The BCM570x also supports jumbo frames, which can be configured vi= a the > > interface MTU setting. Selecting an MTU larger than 1500 bytes wi= th the > > ifconfig(8) utility configures the adapter to receive and transmit= jumbo > > frames. Using jumbo frames can greatly improve performance for ce= rtain > > tasks, such as file transfers and data streaming. > >=20 > > Mine is BCM5751 -- I guess, I'm out of luck... >=20 > I made sure the OpenBSD man page is very clear as to what models do suppo= rt Jumbo > frames after having a few end-users ask similar questions. >=20 > The BCM5700, BCM5701, BCM5703, BCM5704, BCM5714 and BCM5780 are capa= ble > of supporting Jumbo frames, which can be configured via the interfac= e MTU > setting. Selecting an MTU larger than 1500 bytes with the ifconfig(= 8) > utility configures the adapter to receive and transmit Jumbo frames.= Us- > ing Jumbo frames can greatly improve performance for certain tasks, = such > as file transfers and data streaming. >=20 > I would suggest doing the same thing for the FreeBSD man page since there= are a > number of chipset revisions which do not support Jumbo's. Thanks for the suggestion, I added this to our manpage. - Christian --=20 Christian Brueffer chris@unixpages.org brueffer@FreeBSD.org GPG Key: http://people.freebsd.org/~brueffer/brueffer.key.asc GPG Fingerprint: A5C8 2099 19FF AACA F41B B29B 6C76 178C A0ED 982D --k+w/mQv8wyuph6w0 Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2.2 (FreeBSD) iD8DBQFEiuKRbHYXjKDtmC0RAn6LAKD5B9tijy9v0J5to8Z1crJJWG55pACg4Pkv LK3efpPYntnXA2gofUYTWVg= =QW30 -----END PGP SIGNATURE----- --k+w/mQv8wyuph6w0--
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20060610151737.GA4451>