id,summary,reporter,owner,description,type,status,component,version,resolution,keywords,cc,guest,host
8088,VirtualBox.exe allocates 2x host RAM,Catalin Patulea,,"VirtualBox.exe normally uses less than 100 MB of RAM on my machine. Some time after guest startup (can't repro reliably yet), it allocates 4 GB, then an extra 4 GB, causing my machine to grind to a halt while Windows scrambles to page other apps in and out of the pagefile. When I try to close the virtual machine, it gets stuck in Stopping and I have to kill the process manually.

 * Host OS: Windows XP x64
 * VirtualBox: 4.0.0 r69151 with extension pack 4.0.0 r69151
 * Guest OS: Ubuntu 10.04.1 32-bit

 * Host CPUs: 4 (i5 760)
 * Host RAM: 4 GB
 * Guest CPUs: 1
 * Guest RAM: 1 GB
 * VT-x: Enabled
 * Guest Additions: 4.0.0 r69151

Attachments:
 * Ubuntu.vbox - full vbox file of the VM in question
 * Ubuntu-2011-01-15-18-36-11.log - log file after trying to stop the machine (added a comment at the time I tried to close the machine)
 * procexp.png - Process Explorer list showing VB.exe at 8 GB
 * virtualbox_mem.png - graph of CPU, memory and I/O of VB.exe when bug has just happened
 * virtualbox_*.png - other Process Explorer pages for the VB.exe process
 * session_*.png - pages of the Session Information dialog for the VM
 * windbg_vadump.txt - !vadump of VB.exe just after noticing that it allocated 8 GB, before trying to stop the VM
 * windbg_stacks.txt - stacks of all threads, again before trying to stop the VM
",defect,closed,other,VirtualBox 4.0.0,fixed,,,other,other