Hi, i have three guests running via qemu-kvm. All three are webservers using apache2/django and mysql. System load is very low on all guests and the host, too. Guest 1 reaction times (web server, ssh) are fine as long as no other guest is getting busy. When i ssh to guest 2 it takes 5-15 seconds until i get a login. When i run top or htop on one of the guests the other guests don't react for 5 seconds (webservers or typing in ssh shell). My colleagues already try to convince me to use xen instead... already - disabled apm and acpi in the guests - turned Hyperthreading off - tried different i/o schedulers: cfq vs. deadline. Result is the same. - nailed down guest process via taskset to separate cpu cores host is OpenSuSe 11.1 x86_64 kvm-78-6.5.1 2xXeon 5550 Nehalem (Quadcores, Speedstep-enabled) 48 GB RAM 1 GB Ethernet as tap interface all three guests are Debian 5.0 x86_64 two virtual cpus 4GB RAM (hugepage-backed) started via qemu-kvm -hda xyz.qcow2 -daemonize -net nic,model=virtio -net tap -k de -m 3584 -smp 2 -mem-path /hugepages -vnc :2 Any ideas what goes wrong here? Kai -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
