On Sat, Mar 29, 2014 at 2:07 PM, Mark Felder <f...@freebsd.org> wrote:

> Is all this work being done over SSH?

Yes, this is done over SSH.

> Do you have a pf firewall?

No, I dont.

> Have you disabled TSO?
> ifconfig xn0 -tso
> or
> sysctl net.inet.tcp.tso=0

This was enabled, but I've now disabled it. However, the network I/O seems
to be ok, on par with what I can achieve on Linux boxes. Its disk I/O that
makes the system unusable.

> My suspicion is that the slowness of the shell over the network is making
> the machine seem slower than it should be. There are terrible network
> issues with pf and tso on a XenServer environment. I'm not otherwise aware
> of severe I/O issues on XenServer. I have a fairly large cluster running
> almost all FreeBSD guests without any sort of issues related to I/O.

Thanks for the TSO tip!
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