> Date: Mon, 25 Feb 2008 15:05:18 +0100 (CET) > From: Ingo Flaschberger <[EMAIL PROTECTED]> > Sender: [EMAIL PROTECTED] > > 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: [EMAIL PROTECTED] Phone: +1 510 486-8634 Key fingerprint:059B 2DDF 031C 9BA3 14A4 EADA 927D EBB3 987B 3751
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