[vbox-dev] Network Performace Benchmark

Alexey Eremenko al4321 at gmail.com
Fri May 28 17:37:43 GMT 2010

On Sun, May 9, 2010 at 4:06 PM, Achim Hasenmueller <achim at sun.com> wrote:
> Can you retry with E1000? Both PCnet and esp. virtio are not optimized. We
> only added basic virtio, the plan is to optimize it for speed after 3.2.
> On May 7, 2010, at 19:34 , Alexey Eremenko wrote:

Host: Mandriva Linux 2010, x64, Intel Core 2 Q6600, VBox 3.2.0 + Qemu 0.11.0
Guest(s): RHEL 5, x64

Qemu/KVM used as part of Mandriva 2010 distro.

Test between Host <-> Guest: -- Qemu/KVM vs VirtualBox


Connection via VBox "Bridge": (guest has VirtIO, connected to host's eth0)
270-280 Mbit/sec

Connection via VBox "Bridge": (guest has E1000, PRO1000/MT,, connected
to host's eth0)
136-143 Mbit/sec


Connection via KVM "Bridge/TAP": (guest has VirtIO, connected to host's tap0)
1.06-1.12 Gbit/sec
+400% speed advantage

Connection via KVM "Bridge/TAP": (guest has E1000, PRO1000/MT,
connected to host's tap0)
185-188 Mbit/sec
+30% speed advantage

I don't know if the performance would be highter with TUN/TAP (VBox
2.0 and older) mode...
i.e. Is the slowdown causes by vboxnetflt or some other reason ?
Unfortunately VBox 3.2.0 does not support TUN/TAP, and VBox 2.0 won't
install on such new hosts.


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