Date: Thu, 12 May 2011 18:53:43 +0200 From: "laurent.cligny@gmail.com" <laurent.cligny@gmail.com> To: freebsd-xen@freebsd.org Subject: Re: [FreeBSD 8.2 amd64 XENHVM] DomU terrible network performance trought NAT Message-ID: <4DCC1097.4080003@gmail.com> In-Reply-To: <4DCBF681.7070106@ntelecom.com.br> References: <4DCBEEE0.9060705@steadinet.fr> <4DCBF681.7070106@ntelecom.com.br>
next in thread | previous in thread | raw e-mail | index | archive | help
Le 12/05/2011 17:02, Tobias P. Santos a écrit : > Try this: > > ifconfig xn1 -txcsum > > Best regards, > Tobias. Hello Tobias, Unfortunately ifconfig xn1 -txcsum didn't give me lot of result. Doing this my network perf through NAT is about 7KiB/s (that is better than before, but still unworkable). Thanks for the idea, maybe we are not that far away from the solution. > > > Laurent Cligny wrote: >> Hello all, >> >> I want to setup a FreeBSD DomU VM as a network NAT gateway in order to >> provide Internet access to other FreeBSD and Linux DomU VMs. >> My Dom0 is Xen Cloud Platform 1.0 on a Dell Poweredge 210 with 8 cores, >> 16GiB RAM and one NIC. >> >> All FreeBSD VM are 8.2 amd64 with XENHVM kernel anf the Linux VM is a >> Paravirtualized Debian amd64. >> >> The NAT gateway is a two-NIC box, with one (xn0) configured with a >> public Internet address and the other (xn1) configured with a class A >> private address (10.0.0.254). >> The Internet traffic is very good from my FreeBSD NAT gateway to the >> Internet (~ 50MiB/s) and also between other VMs on the private network >> (~ 70MiB/s trough scp) after applying the patch here >> (http://www.mail-archive.com/freebsd-xen@freebsd.org/msg00855.html) >> fixing the "too many frags" problem. >> >> Here is a schema of my setup with the observed net speed on it: >> >> ---------- --------------- ---------------------- >> |Internet|---xn0---|FBSD DomU NAT|---xn1---|FBSD and Linux DomUs| >> ---------- --------------- ---------------------- >> <-------> <-------> >> 50MiB/s 70MiB/s >> >> <-------------------------------> >> 0KiB/s <network speed< 5 KiB/s >> >> [...] > _______________________________________________ > freebsd-xen@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-xen > To unsubscribe, send any mail to "freebsd-xen-unsubscribe@freebsd.org"
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?4DCC1097.4080003>