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986MB/s With BSD And Gigabit Ethernet

Posted by Nik on from the free-for-all dept.

WasterDave wrote in with this link to information about zero copy sockets on FreeBSD. Some hunting turned up more detailed information about NetBSD and Gigabit networking. Pointers to similar information for OpenBSD are appreciated...

1 of 34 comments (clear)

  1. Re:Porting to Linux? by Ingo+Molnar · · Score: 5
    As part of TUX i've implemented zero-copy TCP xmit. It turned out to be a minimal change (barring driver changes), less hassle than we initially thought. Obviously we couldnt have gotten those SPECweb99 numbers without zero-copy TCP xmit.

    One important question is, what MTU have they used. If it's the 9000 byte MTU jumbo gigabit frames then these BSD numbers havent got too practical relevance (i can saturate 8 gigabit cards with TUX, ie. 900MB/sec with 9000 byte MTU). If it's the standard 1500 byte MTU then it's nicer. (hm, i just found it, they indeed used 9000 byte MTU...)