Re: sched/debug: CPU hotplug operation suffers in a large cpu systems

2023-01-19 Thread Phil Auld
Hi Greg, et alia, On Tue, Dec 13, 2022 at 03:31:06PM +0100 Greg Kroah-Hartman wrote: > On Tue, Dec 13, 2022 at 08:22:58AM -0500, Phil Auld wrote: > > > > > > The idea seems good, the implementation might need a bit of work :) > > > > More than the one comment

Re: sched/debug: CPU hotplug operation suffers in a large cpu systems

2022-12-13 Thread Phil Auld
On Wed, Dec 14, 2022 at 10:41:25AM +1100 Michael Ellerman wrote: > Phil Auld writes: > > On Tue, Dec 13, 2022 at 07:23:54AM +0100 Greg Kroah-Hartman wrote: > >> On Mon, Dec 12, 2022 at 02:17:58PM -0500, Phil Auld wrote: > >> > Hi, > >> > > >> &g

Re: sched/debug: CPU hotplug operation suffers in a large cpu systems

2022-12-13 Thread Phil Auld
On Tue, Dec 13, 2022 at 03:31:06PM +0100 Greg Kroah-Hartman wrote: > On Tue, Dec 13, 2022 at 08:22:58AM -0500, Phil Auld wrote: > > On Tue, Dec 13, 2022 at 07:23:54AM +0100 Greg Kroah-Hartman wrote: > > > On Mon, Dec 12, 2022 at 02:17:58PM -0500, Phil Auld wrote: > > >

Re: sched/debug: CPU hotplug operation suffers in a large cpu systems

2022-12-13 Thread Phil Auld
On Tue, Dec 13, 2022 at 07:23:54AM +0100 Greg Kroah-Hartman wrote: > On Mon, Dec 12, 2022 at 02:17:58PM -0500, Phil Auld wrote: > > Hi, > > > > On Tue, Nov 08, 2022 at 01:24:39PM +0100 Greg Kroah-Hartman wrote: > > > On Tue, Nov 08, 2022 at 03:30:46PM

Re: sched/debug: CPU hotplug operation suffers in a large cpu systems

2022-12-12 Thread Phil Auld
the verbose debug flag. Allow changes to verbose to trigger generation of the files. This lets a user batch the updates but still have the information available. The detailed topology printk messages are also under verbose. Signed-off-by: Phil Auld --- kernel/sched/debug.c | 68 +++

Re: [PATCH v3 1/2] powerpc/vcpu: Assume dedicated processors as non-preempt

2019-12-05 Thread Phil Auld
00th: 6184 99.9000th: 82 > min=0, max=9887 min=0, max=121 > > Performance counter stats for 'system wide' (5 runs): > > context-switches43,373 ( +- 0.40% ) 44,597 ( +- 0.55% ) > cpu-migrations 1,211

Re: [PATCH v3 2/2] powerpc/shared: Use static key to detect shared processor

2019-12-05 Thread Phil Auld
On Thu, Dec 05, 2019 at 02:02:18PM +0530 Srikar Dronamraju wrote: > With the static key shared processor available, is_shared_processor() > can return without having to query the lppaca structure. > > Cc: Parth Shah > Cc: Ihor Pasichnyk > Cc: Juri Lelli > Cc: Phil Au