From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Jeremy M. Guthrie" Subject: Re: V2.4 policy router operates faster/better than V2.6 Date: Wed, 12 Jan 2005 17:23:18 -0600 Message-ID: <200501121723.21969.jeremy.guthrie@berbee.com> References: <200501121647.30934.jeremy.guthrie@berbee.com> <16869.45158.194375.398326@robur.slu.se> Reply-To: jeremy.guthrie@berbee.com Mime-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart1388314.TvAxB0A7hL"; protocol="application/pgp-signature"; micalg=pgp-sha1 Content-Transfer-Encoding: 7bit Cc: Robert Olsson Return-path: To: netdev@oss.sgi.com In-Reply-To: <16869.45158.194375.398326@robur.slu.se> Sender: netdev-bounce@oss.sgi.com Errors-to: netdev-bounce@oss.sgi.com List-Id: netdev.vger.kernel.org --nextPart1388314.TvAxB0A7hL Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline On Wednesday 12 January 2005 05:19 pm, Robert Olsson wrote: > Jeremy M. Guthrie writes: > > Here is what it looked like I was getting before from the old driver... > > that took me down to 8mbps. > > > > "printk: 4624 messages suppressed. > > dst cache overflow > > printk: 4630 messages suppressed. > > dst cache overflow > > printk: 4631 messages suppressed. > > dst cache overflow > > printk: 4646 messages suppressed. > > dst cache overflow > > printk: 4645 messages suppressed. > > dst cache overflow" > > Thanks! > > This a known problem. Remember I asked you about this. We're now in the > RCU route-hash problem again. This is not necessary solved by more CPU > as higher t-put forces more dst-entries to be freed aand we get > closer to max_size. > > As your traffic looks sane double your bucket size of the route hash to > start with. Use the boot option w. rhash_entries. look at rtstat Does it make sense that the driver would kill throughput and force us to=20 output these types of messages? =2D-=20 =2D------------------------------------------------- Jeremy M. Guthrie jeremy.guthrie@berbee.com Senior Network Engineer Phone: 608-298-1061 Berbee Fax: 608-288-3007 5520 Research Park Drive NOC: 608-298-1102 Madison, WI 53711 --nextPart1388314.TvAxB0A7hL Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (GNU/Linux) iD8DBQBB5bFpqtjaBHGZBeURAlTAAJ0Rr8D4lKpObZ+keb8zLq5d5v0FKACgnKXD /3Lh4StZBXdA6uCqhjlTO4Y= =UdhW -----END PGP SIGNATURE----- --nextPart1388314.TvAxB0A7hL--