Linux Today: Linux News On Internet Time.
Search Linux Today
Linux News Sections:  Developer -  High Performance -  Infrastructure -  IT Management -  Security -  Storage -
Linux Today Navigation
LT Home
Contribute
Contribute
Link to Us
Linux Jobs


Top White Papers

More on LinuxToday


KernelTrap: Improving KVM Performance With A Tickless Kernel

Jan 16, 2007, 11:30 (0 Talkback[s])

"Avi Kivity suggested that combining KVM, the Kernel-based Virtual Machine, with the dyntick patch could improve overall KVM performance. He noted that it would likely improve performance of both the host by 'avoiding expensive vmexits due to useless timer interrupts,' as well as on the guest by "reducing the load on the host when the guest is idling (currently an idle guest consumes a few percent cpu)". Ingo Molnar pointed out that KVM with his -rt kernel already works with dynticks enabled on both the host and the guest, 'using the dynticks code from the -rt kernel makes the overhead of an idle guest go down by a factor of 10-15.' Ingo added that he hopes the dyntick patch will be ready to be merged into the upcoming mainline 2.6.21 kernel..."

Complete Story

Related Stories: