NFS from virtualbox guest is much slower than NFS from another machine

[Adam Vande More]

On Sun, Apr 8, 2012 at 10:43 PM, Yuri <yuri at 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