Re: [Xen-devel] [PATCH] x86/xen: Add "xen_timer_slop" command line option

2019-03-23 Thread Ryan Thibodeaux
On Fri, Mar 22, 2019 at 06:10:16PM -0400, Boris Ostrovsky wrote: > On 3/22/19 2:29 PM, thibo...@gmail.com wrote: > > From: Ryan Thibodeaux > > > > Add a new command-line option "xen_timer_slop=" that sets the > > minimum delta of virtual Xen timers. This c

Re: [Xen-devel] [PATCH] x86/xen: Add "xen_timer_slop" command line option

2019-03-25 Thread Ryan Thibodeaux
On Mon, Mar 25, 2019 at 09:43:20AM -0400, Boris Ostrovsky wrote: > On 3/25/19 8:05 AM, luca abeni wrote: > > Hi all, > > > > On Sat, 23 Mar 2019 11:41:51 +0100 > > luca abeni wrote: > > [...] > Is there any data that shows effects of using this new parameter? > > >>> Yes, I've done

Re: [Xen-devel] [PATCH] x86/xen: Add "xen_timer_slop" command line option

2019-03-25 Thread Ryan Thibodeaux
On Mon, Mar 25, 2019 at 10:11:38AM -0400, Ryan Thibodeaux wrote: > > > [...] > > >>>> Is there any data that shows effects of using this new parameter? > > >>>> Continuing with the experimental data conversation (thanks to Luca and Dario for being s

Re: [Xen-devel] [PATCH] x86/xen: Add "xen_timer_slop" command line option

2019-03-26 Thread Ryan Thibodeaux
On Tue, Mar 26, 2019 at 12:12:56PM +0100, luca abeni wrote: > Hi all, > > On Tue, 26 Mar 2019 10:13:32 +0100 > Dario Faggioli wrote: > > > On Mon, 2019-03-25 at 09:43 -0400, Boris Ostrovsky wrote: > > > On 3/25/19 8:05 AM, luca abeni wrote: > > > > > > > > The picture shows the latencies meas

Re: [Xen-devel] [PATCH] x86/xen: Add "xen_timer_slop" command line option

2019-03-27 Thread Ryan Thibodeaux
On Tue, Mar 26, 2019 at 07:21:31PM -0400, Boris Ostrovsky wrote: > On 3/26/19 5:13 AM, Dario Faggioli wrote: > > On Mon, 2019-03-25 at 09:43 -0400, Boris Ostrovsky wrote: > >> On 3/25/19 8:05 AM, luca abeni wrote: > >>> The picture shows the latencies measured with an unpatched guest > >>> kernel >

Re: [Xen-devel] [PATCH] x86/xen: Add "xen_timer_slop" command line option

2019-03-27 Thread Ryan Thibodeaux
On Wed, Mar 27, 2019 at 10:46:21AM -0400, Boris Ostrovsky wrote: > On 3/27/19 6:00 AM, Ryan Thibodeaux wrote: > > On Tue, Mar 26, 2019 at 07:21:31PM -0400, Boris Ostrovsky wrote: > >> On 3/26/19 5:13 AM, Dario Faggioli wrote: > >>> On Mon, 2019-03-25 at 09:4