Re: [Qemu-devel] [PATCH v4 12/13] aio: self-tune polling time

2016-12-06 Thread Stefan Hajnoczi
On Tue, Dec 06, 2016 at 11:12:45AM +0100, Christian Borntraeger wrote: > On 12/06/2016 10:20 AM, Stefan Hajnoczi wrote: > > On Mon, Dec 05, 2016 at 09:06:17PM +0100, Christian Borntraeger wrote: > >> On 12/01/2016 08:26 PM, Stefan Hajnoczi wrote: > >>> This patch is based on the algorithm for the k

Re: [Qemu-devel] [PATCH v4 12/13] aio: self-tune polling time

2016-12-06 Thread Christian Borntraeger
On 12/06/2016 10:20 AM, Stefan Hajnoczi wrote: > On Mon, Dec 05, 2016 at 09:06:17PM +0100, Christian Borntraeger wrote: >> On 12/01/2016 08:26 PM, Stefan Hajnoczi wrote: >>> This patch is based on the algorithm for the kvm.ko halt_poll_ns >>> parameter in Linux. The initial polling time is zero. >

Re: [Qemu-devel] [PATCH v4 12/13] aio: self-tune polling time

2016-12-06 Thread Stefan Hajnoczi
On Mon, Dec 05, 2016 at 09:06:17PM +0100, Christian Borntraeger wrote: > On 12/01/2016 08:26 PM, Stefan Hajnoczi wrote: > > This patch is based on the algorithm for the kvm.ko halt_poll_ns > > parameter in Linux. The initial polling time is zero. > > > > If the event loop is woken up within the m

Re: [Qemu-devel] [PATCH v4 12/13] aio: self-tune polling time

2016-12-05 Thread Christian Borntraeger
On 12/01/2016 08:26 PM, Stefan Hajnoczi wrote: > This patch is based on the algorithm for the kvm.ko halt_poll_ns > parameter in Linux. The initial polling time is zero. > > If the event loop is woken up within the maximum polling time it means > polling could be effective, so grow polling time.