Date: Mon, 25 Feb 2008 16:31:07 -0800 From: "Kevin Oberman" <oberman@es.net> To: Ingo Flaschberger <if@xip.at> Cc: =?ISO-8859-15?Q?Daniel_Dias_Gon=E7alves?= <daniel@dgnetwork.com.br>, freebsd-net@freebsd.org, freebsd-performance@freebsd.org Subject: Re: FBSD 1GBit router? Message-ID: <20080226003107.54CD94500E@ptavv.es.net> In-Reply-To: Your message of "Mon, 25 Feb 2008 15:05:18 %2B0100." <alpine.LFD.1.00.0802251503320.2369@filebunker.xip.at>
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--==_Exmh_1203985867_10451P Content-Type: text/plain; charset=us-ascii Content-Disposition: inline > Date: Mon, 25 Feb 2008 15:05:18 +0100 (CET) > From: Ingo Flaschberger <if@xip.at> > Sender: owner-freebsd-net@freebsd.org > > Hi, > > >> ZB> - upgrade at least to 6.3. upgrading to 7.0 might also be better, > >> depending > >> ZB> on hardware choices > >> ZB> - ensure your ethernet cards are on fast enough busses. 'em' (Intel > >> Ether > >> ZB> Express 1000) flavor ports are my personal favorite > >> ZB> - enable polling (this will make a _huge_ difference by itself) > >> ZB> - your hardware is (likely) dual core. Make sure every piece of > >> hardware in > >> ZB> use doesn't involve any giant locks. Under 6.x consider the mpsafenet > >> ZB> sysctl. This is also a point on which 7.0 will shine. > >> > >> I upgrade to 7.0RC3 but still the same. 418Mbit is the roof. > > older fbsd's are faster than newer. > > How are the nic's connected to the cpu? > > lspci -v V7 is not (in my experience) slower than V4, v5, or v6. I have run a lot of tests at speeds MUCH higher than 1Gb. With 10Gb cards, I can sustain transfer rates of over 9Gbps (assuming low RTT and suitable hardware). 1Gbps is not even a challenge...even over a 100 ms. RTT. Note that high throughput may require some tuning. Transmit and receive windows need to be rather large if the RTT is very long at all. (See "bandwidth-delay product" in Stevens or some other TCP reference.) -- R. Kevin Oberman, Network Engineer Energy Sciences Network (ESnet) Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab) E-mail: oberman@es.net Phone: +1 510 486-8634 Key fingerprint:059B 2DDF 031C 9BA3 14A4 EADA 927D EBB3 987B 3751 --==_Exmh_1203985867_10451P Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.8 (FreeBSD) Comment: Exmh version 2.5 06/03/2002 iD8DBQFHw13Lkn3rs5h7N1ERAkJ8AJ92pDS77AS2zrQT1fJ/6atsZV60ywCgjrCI 5CzU5TmKkm4SXje0F7kXzy0= =QVe/ -----END PGP SIGNATURE----- --==_Exmh_1203985867_10451P--
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