Netmap with VMWare

[Luigi Rizzo]

On Fri, Dec 18, 2015 at 5:14 AM, Pradosh Datta <pradosh.datta at gmail.com> wrote:
> Hi,
> I am trying to use the netmap on vmware in CentOS guests, I am able to use
> netmap with the e1000 driver on vmware (though the throughput is close to
> line speed).
>
> But is there any way to use the netmap with vmxnet3? Is there any patch
> available to support that? Or any suggestion on how can I achieve
> high-packet-rate between vm-to-vm using netmap?

The vm-to-vm bottleneck is typically in the hypervisor (vmware) and the
switch (in this case it may be the linux bridge in centos).

I am afraid just using netmap in the guest won't help you much in this respect.
See our ANCS'13 paper
http://info.iet.unipi.it/~luigi/papers/20130903-rizzo-ancs.pdf
for what you can expect (look at the unmodified hypervisor/linux bridge case).

This said, you can always use netmap (in emulated mode) on any network interface
in the guest.

cheers
luigi

>
> Best Regards,
> Pradosh
> _______________________________________________
> freebsd-net at freebsd.org mailing list
> https://lists.freebsd.org/mailman/listinfo/freebsd-net
> To unsubscribe, send any mail to "freebsd-net-unsubscribe at freebsd.org"



-- 
-----------------------------------------+-------------------------------
 Prof. Luigi RIZZO, rizzo at iet.unipi.it  . Dip. di Ing. dell'Informazione
 http://www.iet.unipi.it/~luigi/        . Universita` di Pisa
 TEL      +39-050-2217533               . via Diotisalvi 2
 Mobile   +39-338-6809875               . 56122 PISA (Italy)
-----------------------------------------+-------------------------------