Date: Tue, 12 Nov 2002 04:23:13 +1030 (CST) From: Richard Sharpe <rsharpe@ns.aus.com> To: David Gilbert <dgilbert@velocet.ca> Cc: Terry Lambert <tlambert2@mindspring.com>, <dolemite@wuli.nu>, <freebsd-hackers@FreeBSD.ORG> Subject: Re: [hackers] Re: Netgraph could be a router also. Message-ID: <Pine.LNX.4.33.0211120419460.4073-100000@ns.aus.com> In-Reply-To: <15823.51640.68022.555852@canoe.velocet.net>
next in thread | previous in thread | raw e-mail | index | archive | help
On Mon, 11 Nov 2002, David Gilbert wrote: > >>>>> "Terry" == Terry Lambert <tlambert2@mindspring.com> writes: > > Terry> By "it", I guess you mean "FreeBSD"? > > Terry> What are your performance goals? > > Right now, I'd like to see 500 to 600 kpps. > > Terry> Where is FreeBSD relative to those goals, right now, without > Terry> you doing anything to it? > > Without any work, we got 75 kpps. > > Terry> Where is FreeBSD relative to those goals, right now, if you > Terry> tune it very carefully, but don't hack any code? > > With a few patches, including polling and some tuning, we got 150 to > 200 kpps. > > Note that we've been focusing on pps, not Mbs. With 100M cards (what > we're currently using) we want to focus on getting the routing speed > up. > > One of the largest problems we've found with GigE adapters on FreeBSD > is that their pps ability (never mind the volume of data) is less than > half that of the fxp driver. This is intriguing. I have found with Samba that I am able to achieve approx 100MB/s read from cache with 1500B frame sizes (ie, no jumbo frames) over a BCM5701 on an 850 MHz PIII with FreeBSD 4.3 and similar rates from em0 on a 2GHz P4 with 4.6. Both results were with 1500B frames and considerable free CPU (50% on the 850MHz PIII). However, given that they were full 1500B frames (99%), at least in one direction, perhaps that does not count. Regards ----- Richard Sharpe, rsharpe@ns.aus.com, rsharpe@samba.org, sharpe@ethereal.com, http://www.richardsharpe.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?Pine.LNX.4.33.0211120419460.4073-100000>