[pve-devel] Limited IOP/s on Dual Xeon KVM Host

Stefan Priebe s.priebe at profihost.ag
Sat Nov 10 09:03:49 CET 2012


Hello lists,

on a dual Xeon KVM Host i get max 6000 IOP/s random 4k writes AND reads. 
On a Single Xeon KVM Host i get 17.000-18.000 IOP/s write and read. I 
already tried to pin the kvm process using numactl and also the fio 
process but it doesn't help on the dual xeon.

10GBE Network is fine. I get 9.8Gbit/s on both hosts. Kernel is also he 
same on both.

Anybody an idea?

Greets
Stefan



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