Ticket #6928 (closed defect: fixed)
Terminal Services Guest causes CPU Storm (eats CPU)
|Reported by:||ToddAndMargo||Owned by:|
Host: CentOS 5.5 x64 uname -r: 2.6.18-194.3.1.el5 memory: 24 GB ECC Processor: Intel x5650 (six hard cores) motherboard: Supermicro X8SAX, Bios 1.1a
Guest: Windows Server 2003, SP2, x32 running Terminal Services Guest Additions: 3.2.2
My Guest can run Terminal Services without problem with two cores. When I increase the guest to four cores, the Terminal Server will run for a few hours and then everyone starts complaining about how slow it gets. Looking at CPU usage on the guest shows 100%.
We have Thread Master "CPUThresholdPct" set to 12% and "MainSampleTime" set to 15%. Thread Master on or off makes no difference: runs for a while, then 100% CPU usage.
I have a second customer with the same set up (12 GB, instead of 24) and Windows Server 2008 also as a Terminal Server. They are experiencing the same problem under 3.1.8. I must leave them on two cores as well.
These two customer are pretty angry at me for selling them a U$D 1200.00 processor that they can only use two cores on the guest. Please fix this soon. The natives are very restless!
Many thanks, -T
comment:34 Changed 5 years ago by michael
- Version changed from VirtualBox 3.2.2 to VirtualBox 3.2.6
- Summary changed from 2 cores are stable, 4 cores eventually gives CPU storm to Terminal Services Guest causes CPU Storm (eats CPU)
comment:47 Changed 4 years ago by sandervl73
- Status changed from new to closed
- Resolution set to fixed