On 13-01-26 10:58 AM, Daniel L. Miller wrote:
> I have a Linux (Ubuntu Precise 64) host with both Windows and Linux
> guests.  I've been noticing some poor network performance from the Linux
> guests - I just did a quick test.
>
> The guests are configured with bridged networking, using the
> paravirtualized network adapter.  Guest additions are running.
>
> Pinging the host adapater on the host is an average 0.066 ms
> Pinging a Windows guest from the host is an average 0.380 ms
> Pinging a Linux guest from the host is an average 7.526 ms
>
> I get the same results from two different Linux guests, one 32-bit and
> one 64-bit.
>
> The 32-bit is a fresh install, so unless something is broken in the
> Ubuntu Precise defaults I didn't do it.  Why am I getting such poor
> networking performance from the Linux guests?
>

This doesn't fit the profile exactly, but it may have something to do 
with the tcp offloading issues.

What happens if you ping an ip address not on the host from the linux 
guest?  Like a remote gateway or something.

Geoff

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