Re: [Qemu-devel] Very poor IO performance which looks like some design problem.

2015-04-13 Thread ein
e/qemu-kvm . Version: *qemu-kvm (1:2.1+dfsg-11) * On 04/13/2015 03:45 AM, Fam Zheng wrote: > On Fri, 04/10 22:38, ein wrote: >> Qemu creates more than 70 threads and everyone of them tries to write to >> disk, which results in: >> 1. High I/O time. >> 2. Large latency. &g

Re: [Qemu-devel] Very poor IO performance which looks like some design problem.

2015-04-11 Thread ein
On 04/11/2015 03:09 PM, Paolo Bonzini wrote: > On 10/04/2015 22:38, ein wrote: >> Qemu creates more than 70 threads and everyone of them tries to write to >> disk, which results in: >> 1. High I/O time. >> 2. Large latency. >> 2. Poor sequential read/write speed