Date: Mon, 11 Jun 2012 18:32:36 +0200 From: Andreas Nilsson <andrnils@gmail.com> To: Luigi Rizzo <rizzo@iet.unipi.it> Cc: net@freebsd.org Subject: Re: VALE, a Virtual Local Ethernet. http://info.iet.unipi.it/~luigi/vale/ Message-ID: <CAPS9%2BSvM0EtSDLvaHgYk%2Bzg-6nmXJoObTXAhaJab49FmGWchVQ@mail.gmail.com> In-Reply-To: <20120608171126.GA29273@onelab2.iet.unipi.it> References: <20120608171126.GA29273@onelab2.iet.unipi.it>
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I just read the paper and it looks really promising :) I decided to test it and downloaded http://info.iet.unipi.it/~luigi/netmap/20120608-netmap-picobsd-head-amd64.bin( thanks for making it easy to test! ) I booted it up in kvm and it works great! I got 8.86Mpps (64-byte) in the image, that is nice :) I however wanted to test somewhat more realistic traffic flow, but I could not find any nice way to do it. I tried to start a pkt-gen receiver with 2 threads and then launch 2 senders, but that lead to a kernel panic ;) Fatal trap 12: page fault while in kernel mode cpuid = 0; apic id = 00 fault virtual address = 0x471 fault code = supervisor read data, page not present instruction pointer = ... stack pointer = ... frame pointer = ... code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, long 1, def32 0, gran 1 processor eflags = interupt enabled, resume, IOPL = 0 current process = 108 (pkg-gen) I guess that was not the way to achieve a more realstic IMIX ;) Best regards Andreas On Fri, Jun 8, 2012 at 7:11 PM, Luigi Rizzo <rizzo@iet.unipi.it> wrote: > We have just completed a netmap extensions that let you build a > local high speed switch called VALE which i think can be very useful. > > http://info.iet.unipi.it/~luigi/vale/ > > VALE is a software Virtual Local Ethernet whose ports are accessible > using the netmap API. Designed to be used as the interconnect between > virtual machines (or as a fast local bus), it works as a learning > bridge and supports speeds of up to 20 Mpps with short frames, and > an aggregate 70 Gbit/s with 1514-byte packets. The VALE paper > contains more details and performance measurements. > > VALE is implemented as a small extension of the netmap module, and > is available for FreeBSD and Linux. The source code includes a > backend for qemu and KVM, so you can use VALE to interconnect virtual > machines launching them with > > qemu -net nic -net netmap,ifname=vale0 ... > qemu -net nic -net netmap,ifname=vale1 ... > ... > > Processes can talk to a VALE switch too, so you can use the pkt-gen > or bridge tools that are part of the netmap distribution, or even > the pcap.c module that maps libpcap calls into netmap equivalents. > This lets you use VALE for all sort of pcap-based applications. > > More details, code, bootable images on the VALE page, > > http://info.iet.unipi.it/~luigi/vale/ > > feedback welcome, as usual. > > cheers > luigi > -----------------------------------------+------------------------------- > Prof. Luigi RIZZO, rizzo@iet.unipi.it . Dip. di Ing. dell'Informazione > http://www.iet.unipi.it/~luigi/ . Universita` di Pisa > TEL +39-050-2211611 . via Diotisalvi 2 > Mobile +39-338-6809875 . 56122 PISA (Italy) > -----------------------------------------+------------------------------- > _______________________________________________ > freebsd-net@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-net > To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org" >
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