Re: [ANNOUNCE] Full dynticks selftests 0.0.1

2013-06-19 Thread Frederic Weisbecker
On Tue, Jun 18, 2013 at 11:17:33AM -0700, Paul E. McKenney wrote: > On Tue, Jun 18, 2013 at 06:22:57PM +0200, Frederic Weisbecker wrote: > > On Tue, Jun 18, 2013 at 08:15:20AM -0700, Paul E. McKenney wrote: > > > On Tue, Jun 18, 2013 at 02:20:35PM +, Christoph Lameter wrote: > > > > On Wed, 12

Re: [ANNOUNCE] Full dynticks selftests 0.0.1

2013-06-19 Thread Christoph Lameter
On Tue, 18 Jun 2013, Paul E. McKenney wrote: > +online to handle timekeeping tasks in order to ensure that system > +calls like gettimeofday() returns accurate values on adaptive-tick CPUs. > +(This is not an issue for CONFIG_NO_HZ_IDLE=y because there are no running > +user processes to observe s

Re: [ANNOUNCE] Full dynticks selftests 0.0.1

2013-06-18 Thread Paul E. McKenney
On Tue, Jun 18, 2013 at 06:22:57PM +0200, Frederic Weisbecker wrote: > On Tue, Jun 18, 2013 at 08:15:20AM -0700, Paul E. McKenney wrote: > > On Tue, Jun 18, 2013 at 02:20:35PM +, Christoph Lameter wrote: > > > On Wed, 12 Jun 2013, Frederic Weisbecker wrote: > > > > > > > Here it is, a very bas

Re: [ANNOUNCE] Full dynticks selftests 0.0.1

2013-06-18 Thread Frederic Weisbecker
On Tue, Jun 18, 2013 at 08:15:20AM -0700, Paul E. McKenney wrote: > On Tue, Jun 18, 2013 at 02:20:35PM +, Christoph Lameter wrote: > > On Wed, 12 Jun 2013, Frederic Weisbecker wrote: > > > > > Here it is, a very basic test that runs a userspace loop for ten seconds > > > and dumps a trace > >

Re: [ANNOUNCE] Full dynticks selftests 0.0.1

2013-06-18 Thread Paul E. McKenney
On Tue, Jun 18, 2013 at 02:20:35PM +, Christoph Lameter wrote: > On Wed, 12 Jun 2013, Frederic Weisbecker wrote: > > > Here it is, a very basic test that runs a userspace loop for ten seconds > > and dumps a trace > > of the tick, scheduler, workqueue, and other kind of kernel noise. > > Exc

Re: [ANNOUNCE] Full dynticks selftests 0.0.1

2013-06-18 Thread Christoph Lameter
On Wed, 12 Jun 2013, Frederic Weisbecker wrote: > Here it is, a very basic test that runs a userspace loop for ten seconds and > dumps a trace > of the tick, scheduler, workqueue, and other kind of kernel noise. Excellent. Ticks are finally off here. Also has useful instructions on how to figure

[ANNOUNCE] Full dynticks selftests 0.0.1

2013-06-12 Thread Frederic Weisbecker
Hi all, I've been using a homemade test for full dynticks all that time and I regret I haven't shared it much sooner. I've been asked for such a tool many times and getting full dynticks working correctly is often not a piece of cake. Here it is, a very basic test that runs a userspace loop for