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

2019-03-26 Thread luca abeni
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 measured with an unpatched guest > > >

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

2019-03-25 Thread luca abeni
Hi, On Mon, 25 Mar 2019 09:43:20 -0400 Boris Ostrovsky wrote: [...] > > http://retis.santannapisa.it/luca/XenTimers/ > > (there also is a link to the scripts to be used for reproducing the > > results). The latencies have been measured by running cyclictest in > > the guest (see the scripts for d

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

2019-03-25 Thread luca abeni
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 some research and experiments on this. I did it > > together with a friend, which I'm

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

2019-03-23 Thread luca abeni
Hi all, On Sat, 23 Mar 2019 03:58:16 +0100 Dario Faggioli wrote: > On Fri, 2019-03-22 at 18:10 -0400, Boris Ostrovsky wrote: > > On 3/22/19 2:29 PM, thibo...@gmail.com wrote: > > > From: Ryan Thibodeaux > > > > > > The original timer slop value has not changed since the > > > introduction >