This page (revision-40) was last changed on 23-Apr-2022 17:06 by Harry Metske

This page was created on 23-Apr-2022 17:05 by Harry Metske

Only authorized users are allowed to rename pages.

Only authorized users are allowed to delete pages.

Page revision history

Version Date Modified Size Author Changes ... Change note
40 23-Apr-2022 17:06 41 KB Harry Metske to previous
39 23-Apr-2022 17:05 41 KB Harry Metske to previous | to last
38 23-Apr-2022 17:05 40 KB Harry Metske to previous | to last --biosbootmenu disabled, not more than one cpu
37 23-Apr-2022 17:05 38 KB Harry Metske to previous | to last
36 23-Apr-2022 17:05 37 KB Harry Metske to previous | to last
35 23-Apr-2022 17:05 37 KB Harry Metske to previous | to last
34 23-Apr-2022 17:05 37 KB Harry Metske to previous | to last
33 23-Apr-2022 17:05 37 KB Harry Metske to previous | to last
32 23-Apr-2022 17:05 37 KB Harry Metske to previous | to last
31 23-Apr-2022 17:05 36 KB Harry Metske to previous | to last
30 23-Apr-2022 17:05 35 KB Harry Metske to previous | to last
29 23-Apr-2022 17:05 35 KB Harry Metske to previous | to last
28 23-Apr-2022 17:05 35 KB Harry Metske to previous | to last guest properties
27 23-Apr-2022 17:05 33 KB Harry Metske to previous | to last
26 23-Apr-2022 17:05 32 KB Harry Metske to previous | to last
25 23-Apr-2022 17:05 32 KB Harry Metske to previous | to last
24 23-Apr-2022 17:05 31 KB Harry Metske to previous | to last
23 23-Apr-2022 17:05 30 KB Harry Metske to previous | to last
22 23-Apr-2022 17:05 30 KB Harry Metske to previous | to last
21 23-Apr-2022 17:05 29 KB Harry Metske to previous | to last cpu affinity

Page References

Incoming links Outgoing links
VirtualBox
VirtualBox

Version management

Difference between version and

At line 611 changed one line
! CPU Usage, tickless kernel
! CPU Usage
At line 613 added 2 lines
__Tickless kernel__
At line 620 added 20 lines
__ CPU Affinity __
Another thing that is mentioned on the forums is that assigning cpu aff. to a process reduces CPU consumption of a guest.\\
Experimented this by running two identical guests for many hours, one with aff. (ubm1) and another one without aff. (ubm2), here are the start commands :
{{{
taskset -c 0 VBoxManage startvm ubm1 --type headless
VBoxManage startvm ubm2 --type headless
}}}
After a couple of hours, we look at the cpu time :
{{{
metskem@gneisenau ~/Downloads $ ps -f -p 10591 10622
UID PID PPID C STIME TTY STAT TIME CMD
metskem 10591 9922 0 Nov03 ? Sl 7:44 /usr/lib/virtualbox/VBoxHeadless --comment ubm1 --startvm 59034198-f98e-447d-896d-cd87cead96c2 --vrdp off
metskem 10622 9922 0 Nov03 ? Sl 12:13 /usr/lib/virtualbox/VBoxHeadless --comment ubm2 --startvm 108de229-caef-4fb8-b4bf-973155c945d1 --vrdp off
}}}
As you can see, this makes quite a difference, 464 seconds versus 733 seconds (__ 37 % less CPU usage __)
This page (revision-40) was last changed on 23-Apr-2022 17:06 by Harry MetskeTop