Hi: I am running qemu-kvm version 1.0
($kvm -version QEMU emulator version 1.0 (qemu-kvm-1.0), Copyright (c) 2003-2008 Fabrice Bellard) When I start a VM with 4 vcpus, I see about 8 threads. (the thread count varies ...) 1118 1118 ? 00:00:00 kvm-irqfd-clean *8767 8767 pts/4 00:03:16 kvm* * 8767 8770 pts/4 1-15:10:10 kvm* * 8767 8771 pts/4 1-14:40:42 kvm* * 8767 8772 pts/4 2-04:39:57 kvm* * 8767 8773 pts/4 08:35:51 kvm* * 8767 28585 pts/4 00:00:00 kvm* * 8767 28597 pts/4 00:00:00 kvm* * 8767 28598 pts/4 00:00:00 kvm* * 8767 28599 pts/4 00:00:00 kvm* * 8767 28600 pts/4 00:00:00 kvm* 8768 8768 ? 00:00:00 kvm-pit/8767 On older version of qemu (prior to the qemu/kvm binary merge), I typically saw 5 threads (for 4 vcpu) - which I believe was 1 x 4 for each vcpu and 1 for the IO threads. In the current system, what are the extra threads? Secondly, I am currently not using libvirt and having to start qemu from command line. I still want to pin the vcpu to a pcpu and want to use taskset on a thread. Unless I know which thread is emulating the vcpu how can I pin that thread? Do you have any other thoughts on the pinning part? Any guidance/pointers? Thank You.
