Ticket #8724 (closed defect: obsolete)
100% host CPU when enabling Serial Port with Host Pipe mode
|Reported by:||Thoric||Owned by:|
|Version:||VirtualBox 4.0.4||Keywords:||serial port CPU|
Description (last modified by aeichner) (diff)
VirtualBox uses 100% of one core of my CPU on my dual-core laptop when I launch a guest OS with an enabled Serial Port. Specifically Port Number: COM1 Port Mode: Host Pipe Create Pipe: (Unchecked) Port/File Path: COM1
Changing Port Mode from Host Pipe to Host Device reduces idle CPU usage to less than 5%. The HELP does not explain the difference between what a Host Pipe is and what a Host Device is. Should the Host Pipe mode really use 100% of a core when guest is idle?
OS details: Windows XP Pro Host 32-bit (fully updated), 3Gb RAM, Dual-Core Intel Core2Duo 2.4GHz. Windows XP Pro Guest 32-bit (fully updated)