VMware workstation 8 poor network performance between Ubuntu Host and VM guest

[abusous2000]

I have VM Workstation 8.0.2 installed on a host with

- OS as Ubuntu 64 bit 12.04

- 32 CPUs                                                   

- 64 GB of RAM

- 4 x Intel NICs each 1Gbps speed

My guest VM is

-         32bit Ubuntu 10.10

-         4GB of RAM

-         4 CPUs

-         2 Virtual NICs at speeds of 1000Mbps (I checked with ethtool)

- VMWare client tools installed (and reinstalled several times)

I get max of 120 Mbps between the guest and the host (measured using many tools; i.e. iperf and cp over NFS4 from and to guest). On the other hand, the performance of the host (where the VM Work Station 8 is installed) to another host on the same network is 900+Mbps. BTW, pinging from the host to the guest is 600ms and to another host on the network around 95 ms. In other words, the VM Guest performance is 1/6 the performance of calling another host on the network.

Most solutions on the net (including the one below),

http://communities.vmware.com/thread/105389

recommended turning OFF tcp offloading, and my output on the host and guest as follows:-

#host, same output for other eth1,2,&3

sudo ethtool –k eth0

Offload parameters for eth0:

rx-checksumming: off

tx-checksumming: off

scatter-gather: off

tcp-segmentation-offload: off

udp-fragmentation-offload: off

generic-segmentation-offload: off

generic-receive-offload: on

large-receive-offload: off

rx-vlan-offload: on

tx-vlan-offload: on

ntuple-filters: off

receive-hashing: on

#Guest

rx-checksumming: on

tx-checksumming: off

scatter-gather: off

tcp-segmentation-offload: off

udp-fragmentation-offload: off

generic-segmentation-offload: off

generic-receive-offload: off

large-receive-offload: off

I looked for solutions on the net and couldn't find any, any ideas guys?

[abusous2000]

More information for those who have this problem.

My guest was built in VM WorkStation 7 and then migrated, may it has something to do with that!!

I have installed a new guest (Ubuntuu 64 bit 12.04, with 1GB of RAM and I core, without  VM Client tools) to see the performance, and over NFS4 share/mount,  I was surprised to find the performance is over 65MB/s which is six times better.

I have installed a lot of applications on my VMs, and to reinstall them new VMs for sure months worth of work.

There has to be a solutions to this? I would appreciate any help from the community on this.

[mattygio77]

Did you find a solution for this? I'm having a similar problem with my host and vm set up.

Thanks!

[scott28tt]

If you are using a later version of Workstation than 8 I would suggest creating a new thread rather than resurrecting one from 2013.

[mattygio77]

UDP Packets dropping from host to VM

I wrote a post, link above.