Ticket #1350 (new defect)
Adobe Flash in guest causes 100% CPU in host
|Reported by:||ariel||Owned by:|
Win-XP SP2 guest running under Ubuntu 7.10 (2.6.22-14-generic, x86)
The guest runs fine; however when opening a browser (Firefox or IE7), and navigating to a site with flash content (such as wiley.ca), the host CPU utilization shoots up to 100% in one the CPUs of my core2duo machine. "top" shows:
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
7975 ariel 15 0 1140m 1.1g 16m R 97 53.9 117:44.55 VirtualBox
Weirdly enough, the WinXP guest Task Manager shows 0% CPU activity while this happens.
However, the whole virtual machine turns slow and unresponsive when this is happening. There are no hangs, but the VM is barely usable.
This has been a long standing problem. I'm currently running 1.5.6, but this happened in 1.54 as well.
The host has 2GB of RAM and the virtualmachine is configured to use 964 megs, which never fills up.
The issue shows up in two different machines; both are Core 2 Duo, one is a desktop, the other a laptop. Enabling or disabling VT-x extensions in VB configuration and in the machines' BIOS produces no change.
Other people are reporting the same problem, this is the discussion thread: http://forums.virtualbox.org/viewtopic.php?t=3137