Date: Sun, 8 Apr 2012 23:25:42 -0500 From: Adam Vande More <amvandemore@gmail.com> To: Yuri <yuri@rawbw.com> Cc: freebsd-emulation@freebsd.org Subject: Re: NFS from virtualbox guest is much slower than NFS from another machine Message-ID: <CA%2BtpaK34wFbW4xBPAjYAP0tJK_%2B8oV1qhxitG3-r0QFhXJZ4fg@mail.gmail.com> In-Reply-To: <4F825AD5.6040609@rawbw.com> References: <4F82551A.9040206@rawbw.com> <4F825AD5.6040609@rawbw.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On Sun, Apr 8, 2012 at 10:43 PM, Yuri <yuri@rawbw.com> wrote: > On 04/08/2012 20:18, Yuri wrote: > >> Same NFS operations take 11 sec from the local vbox guest and 3 sec from >> the remote host over 100Mb link. >> > > During build, top in guest shows <3% CPU load on average (during intense > NFS), but top on the host shows that VirtualBox process consumes 50% CPU. > Looks like somewhere somebody does some processing byte by byte. > Virtualizated NIC's are slow, regardless of hypervisor, although some are better than others. Hi performance in something like XEN/KVM/Virtualbox requires pci-pass-thru, but I don't think FreeBSD supports this yet. You can use /usr/ports/emulators/virtio-kmod which will help a little. Otherwise use a jail. -- Adam Vande More
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?CA%2BtpaK34wFbW4xBPAjYAP0tJK_%2B8oV1qhxitG3-r0QFhXJZ4fg>