Ticket #3900 (closed defect: obsolete)
Slow (text) scrolling with VirtualBox 2.2.x
|Reported by:||chasake||Owned by:|
|Version:||VirtualBox 2.2.2||Keywords:||Slow scrolling|
Description (last modified by frank) (diff)
After installing 2.2.0 (and also in 2.2.2) the scrolling of (at least) text in a window is much slower than in 2.1.4. When I roll the mouse the CPU load goes to 100% and my processor clocks up to max speed.
Another test is to keep 'enter' pressed creating a lot of newlines in a text editor. The cpu goes to 100% and clocks up. I tried updating the Virtual Box Guest Additions, but that does not solve the problem. Then I tried switching 3d acceleration off and on but that does not change anything either. In the end I reinstalled 2.1.4 and things are just fine again.
First I was running virtualbox in Ubuntu Intrepid 64 bit with a 32 bit Windows XP client but I recently did a fresh install of Jaunty AMD64 with the same 32bit XP client on VirtualBox 2.1.4. In 2.2.0 and 2.2.2 the scroll problem reappeared as on Ubuntu Intrepid.
I must say that I only quickly tried if the problem persisted in 2.2.2 by starting 'IAR embedded workbench' in a Windows XP client and then started pressing enter in the editor window. In 2.2.x you can see that the creation of new lines is slow and that scrolling takes time and the processor clocks from an idling 1.0 GHz to 1.8GHz with 100% CPU on 1 core. In 2.1.4 the CPU remains on 1 GHz with a lot less load. Also the number of lines created per second by pressing enter is much higher.
I also noted this problem on the forum: http://forums.virtualbox.org/viewtopic.php?f=7&t=16402 and maybe the same problem is posted by someone else in thist post http://forums.virtualbox.org/viewtopic.php?f=2&t=16388