Re: [Qemu-devel] [PATCH] posix-aio-compat: fix latency issues

2011-08-08 Thread Frediano Ziglio
2011/8/8 Avi Kivity : > In certain circumstances, posix-aio-compat can incur a lot of latency: >  - threads are created by vcpu threads, so if vcpu affinity is set, >   aio threads inherit vcpu affinity.  This can cause many aio threads >   to compete for one cpu. >  - we can create up to max_threa

Re: [Qemu-devel] [PATCH] posix-aio-compat: fix latency issues

2011-08-08 Thread Frediano Ziglio
2011/8/8 Avi Kivity : > On 08/08/2011 03:49 PM, Frediano Ziglio wrote: >> >> 2011/8/8 Avi Kivity: >> >  In certain circumstances, posix-aio-compat can incur a lot of latency: >> >    - threads are created by vcpu threads, so if vcpu affinity is set, >>