Letting sleeping processors lie
Posted Oct 16, 2003 1:49 UTC (Thu) by jdike
Parent article: Letting sleeping processors lie
This feature is also highly desired by virtual machine people, i.e. UML and S/390. The reason is that a bunch of 1000 HZ VMs on a host generate 1000 timer interrupts per second per virtual machine. This is useless work for the host, and quickly adds up to a noticable load.
Virtual machines would use VST by delaying the next timer from the host until they actually have something to do for that tick. So, an idle virtual machine would consume no host CPU.
to post comments)