id	summary	reporter	owner	description	type	status	component	version	resolution	keywords	cc	guest	host
5303	Performance issue with bridged networking, Solaris host and nfs	Thomas Berg		"I've tested 3.0.8 for a while on my Solaris 10 U8 x86 box and it's been quite stable. I do seem to have some performance issues though. I've discovered one thing at least.
When running Linux guests with bridged networking mounting a nfs share from the host, transfer speeds are really slow (4-600KB/s). This was using guest additions.
Here's what I tried:
Ubuntu 9.04 x86_64 guest - bridged networking
 - Mounted nfs share from host (shared either using ""zfs sharenfs"" or using share command). File copy speed 4-600KB/s
 - Mounted nfs share from a stand alone Ubuntu machine. Speed 20-30MB/s
 - Mounted vbox shared folder. Speed 30-40MB/s
    * PS. I often get ""protocol error"" messages when trying to mount shared folders using ""mount -t vboxsf"" but suddenly it works

Shutdown guest, changed network to NAT and booted
 - NFS share from host - Speed 30-40MB/s
 - vbox shared folder - Speed 30-40MB/s
   * don't seem to get any errors mounting shard folders using NAT but that might be a pure coincident.
I tried with a Fedora 11 guest as well with the same results.

I've attached a VBox.log from the session using bridged networking and nfs mount from host.

"	defect	closed	network	VirtualBox 3.0.8	obsolete	bridged		Linux	Solaris