Re: [Xen-devel] [PATCH 2/4] xen: credit2: allow to set and get utilization cap

2017-06-29 Thread Alan Robinson
On Thu, Jun 08, 2017 at 02:08:54PM +0200, Dario Faggioli wrote: > As cap is already present in Credit1, as a parameter, all > the wiring is there already for it to be percolate down s/be // > to csched2_dom_cntl() too. Alan ___ Xen-devel mailing list

Re: [Xen-devel] [PATCH v2 3/5] xen: sched: introduce the 'null' semi-static scheduler

2017-04-07 Thread Alan Robinson
On Fri, Apr 07, 2017 at 02:34:07AM +0200, Dario Faggioli wrote: > In cases where one is absolutely sure that there will be > less vCPUs than pCPUs, having to pay the cose, mostly in s/cose/cost/ Alan -- Alan Robinson Fujitsu, Enterprise Platform Services, G

Re: [Xen-devel] PV performance degraded after live migration

2017-03-15 Thread Alan Robinson
nation host memory is. > Yes indeed - sorry for the HVM noise.. Alan -- Alan Robinson Principal Developer, Enterprise Platform Services, Germany Fujitsu Mies-van-der-Rohe-Str. 8, 80807 Muenchen, Deutschland Tel.: +49 (89) 62060 3927 Mob.: +49 (172) 8512843 E-Mail: alan.rob

Re: [Xen-devel] PV performance degraded after live migration

2017-03-15 Thread Alan Robinson
Hi Olaf, On Wed, Mar 15, 2017 at 12:20:44PM +0100, Olaf Hering wrote: > After reports about degraded performance after a PV domU was migrated > from one dom0 to another it turned out that this issue happens with > every version of Xen and every version of domU kernel. > > The used benchmark is 's

Re: [Xen-devel] [PATCH] x86/time: adjust local system time initialization

2016-06-12 Thread Alan Robinson
On Fri, Jun 10, 2016 at 09:13:14AM -0600, Jan Beulich wrote: > From: Jan Beulich > Using the bare return value from read_platform_stime() is not suitable > when local_time_calibration() is going to use its fat path: Divergence s/fat/fast/ although 'fat path' does have a certain ring to it... Al

Re: [Xen-devel] [PATCH 2/3] libxc: adjust retry loop in xc_cpupool_removecpu()

2016-04-15 Thread Alan Robinson
or EBUSY case") added a retry loop in xc_cpupool_removecpu() for the > EBUSY case. As EBUSY was returned in multiple error situations the > loop would have been executed in situations where a retry would not > be successful. Additionally calling sleep(1) between the rerires is a

Re: [Xen-devel] [PATCH] xen: recalculate per-cpupool credits when updating timeslice

2016-02-01 Thread Alan Robinson
On Fri, Jan 29, 2016 at 11:21:48AM +0100, Juergen Gross wrote: > When modifying the timeslice of the credit scheduler in a cpupool the > cpupool global credit value (n_cpus * credits_per_tslice) isn't > recalculated. This will lead to wrong scheduling decisions later. > > Do the recalculation when

[Xen-devel] [PATCH v2] VPMU: add lost Intel processor

2015-06-08 Thread Alan Robinson
From: Alan Robinson commit 6d112f2b50 ("x86/vPMU: change Intel model numbers from decimal to hex") translated 47 to 0x27, now corrected to 0x2f. Signed-off-by: Alan Robinson Signed-off-by: Dietmar Hahn --- Changed since v1: (after talking to Dietmar, he's away from his em