[vbox-dev] Updating network interfaces list speed-up
a.urakov at drweb.com
a.urakov at drweb.com
Mon Apr 13 07:23:41 GMT 2015
Hello Mr. Eromenko,
thank you for porting this patch on beta version.
As for performance
> Command to clone 70 VMs:
> $ for i in `seq 1 70`; do VBoxManage clonevm "ZeroVM" --mode all
> --register --name "ZeroVM Clone $i"; done
> 70 VMs, Host-only-interface mode:
I think it can happen because all your VMs have only one interface
vboxnet0 (if I'm not mistaken?). In our case we have separate interfaces
for every VM (/vboxnet1..80/), and all of them are in
//etc/network/interfaces/, so host interfaces list updating takes
significantly longer time.
> unpatched:
> 2:30 min boot. -- 2:33 min (2nd run)
> patched: (slower by margin of error)
> 2:35 min boot. .. 2:34 (2nd run)
What does this time mean? If I understand you right, you start VMs
without OSes, but for simple VM starting this time looks too long...
> Timed manually from smartphone, so 1 second mistake is possible. (not
> via host OS timer)
We use time field in VBoxSVC log for chronometry (we attached
/VBoxSVC.log/s to first letter). This way you can measure execution time
for specific procedure (/FindHostNetworkInterfaceByName/ in our case)
and see how this patch affects this.
Regards,
Alexander
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