On 05/05/2010 04:45 AM, Alec Istomin wrote:
Gentlemen, Reaching out with a non-development question, sorry if it's not appropriate here. I'm looking for a way to improve Linux SMP VMs performance under KVM. My preliminary results show that single vCPU Linux VMs perform up to 10 times better than 4vCPU Linux VMs (consolidated performance of 8 VMs on 8 core pre-Nehalem server). I suspect that I'm missing something major and look for any means that can help improve SMP VMs performance.
So you have a total of 32 vcpus on 8 cores? This is known to be problematic. You may see some improvement by enabling hyperthreading.
There is ongoing work to improve this. -- error compiling committee.c: too many arguments to function -- 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
