On Thursday 25 September 2008 at 11:35 am, Ricardo Kleemann penned about "Re: [vbox-users] guest network performance"
> Hello Pablo, Hi Ricardo > Thanks for the feedback. YW. > Actually no, this is not on windows, it's between linux host <-> > linux guest, Got it. > The way I'm perceiving the performance is whenever I untar a tarball > on the guest within the NFS-mounted directory, I see that the untar > operation is significantly slower than what I would expect for a > local network. Okay, I re-read your original post; sorry for the earlier incorrect suggestion. As for your initial question on how to test the `host <-> guest network performance', what I'd do is conduct several tests. First, I'd remove `tar' from the equation. Create a 20MB file and place it on the host and on the guest's local drive. I'd collect timings copying the file from the host to the NFS-mount. Do three runs and use `time' Next, do the same in the VM. How much difference is there? The quesetion in my mind is are we running out of CPU to drive the I/O subsystem? Eliminating `tar' from the equation helps to understand the problem. I'd also be curious as to what `strace' says for a small-ish transfer; comparing the results of each. Cheers, -- Pablo Sanchez - Blueoak Database Engineering, Inc Ph: 819.459.1926 Fax: 760.860.5225 (US) _______________________________________________ vbox-users mailing list [email protected] http://vbox.innotek.de/mailman/listinfo/vbox-users
