Re: [PATCH 2/8] vtime: Use consistent clocks among nohz accounting

2013-06-03 Thread Frederic Weisbecker
On Mon, Jun 03, 2013 at 09:51:37PM +0200, Stefan Seyfried wrote: > Am 03.06.2013 21:48, schrieb Frederic Weisbecker: > > On Mon, Jun 03, 2013 at 11:47:17AM +0200, Stefan Seyfried wrote: > >> FWIW: > >> Tested-by: Stefan Seyfried > >> > >> This patch fixes the 0% CPU issue on openSUSE Factory kerne

Re: [PATCH 2/8] vtime: Use consistent clocks among nohz accounting

2013-06-03 Thread Stefan Seyfried
Am 03.06.2013 21:48, schrieb Frederic Weisbecker: > On Mon, Jun 03, 2013 at 11:47:17AM +0200, Stefan Seyfried wrote: >> FWIW: >> Tested-by: Stefan Seyfried >> >> This patch fixes the 0% CPU issue on openSUSE Factory kernels for me. > > Thanks! The patch has been committed already so I can't add y

Re: [PATCH 2/8] vtime: Use consistent clocks among nohz accounting

2013-06-03 Thread Frederic Weisbecker
On Mon, Jun 03, 2013 at 11:47:17AM +0200, Stefan Seyfried wrote: > Am 20.05.2013 18:01, schrieb Frederic Weisbecker: > > While computing the cputime delta of dynticks CPUs, > > we are mixing up clocks of differents natures: > > [...] > > > As a consequence, some strange behaviour with unstable ts

Re: [PATCH 2/8] vtime: Use consistent clocks among nohz accounting

2013-06-03 Thread Steven Rostedt
On Mon, 2013-06-03 at 11:47 +0200, Stefan Seyfried wrote: > FWIW: > Tested-by: Stefan Seyfried FWIW, we can always use testers. Thanks for testing! -- Steve -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More ma

Re: [PATCH 2/8] vtime: Use consistent clocks among nohz accounting

2013-06-03 Thread Stefan Seyfried
Am 20.05.2013 18:01, schrieb Frederic Weisbecker: > While computing the cputime delta of dynticks CPUs, > we are mixing up clocks of differents natures: [...] > As a consequence, some strange behaviour with unstable tsc > has been observed such as non progressing constant zero cputime. > (The 'to

[PATCH 2/8] vtime: Use consistent clocks among nohz accounting

2013-05-20 Thread Frederic Weisbecker
While computing the cputime delta of dynticks CPUs, we are mixing up clocks of differents natures: * local_clock() which takes care of unstable clock sources and fix these if needed. * sched_clock() which is the weaker version of local_clock(). It doesn't compute any fixup in case of unstable sou