Re: Periodic timing varies across boots

2019-03-01 Thread Philippe Gerum via Xenomai
On 3/1/19 9:05 AM, Philippe Gerum via Xenomai wrote: In order to mitigate this issue, you could try to isolate the > CPU used by the rt work loop using isolcpus, even if this can't block > any non-rt activity on that CPU, should read as: even if this can't fully block all non-rt activity on this

Re: Periodic timing varies across boots

2019-03-01 Thread Philippe Gerum via Xenomai
On 3/1/19 8:30 AM, C Smith wrote: > On Wed, Feb 27, 2019 at 11:30 PM Philippe Gerum > wrote: > > On 2/28/19 6:56 AM, C Smith via Xenomai wrote: > > On Mon, Feb 25, 2019 at 12:09 AM Jan Kiszka > mailto:jan.kis...@siemens.com>> wrote: > > > >> On

Re: Periodic timing varies across boots

2019-02-28 Thread C Smith via Xenomai
On Wed, Feb 27, 2019 at 11:30 PM Philippe Gerum wrote: > On 2/28/19 6:56 AM, C Smith via Xenomai wrote: > > On Mon, Feb 25, 2019 at 12:09 AM Jan Kiszka > wrote: > > > >> On 24.02.19 07:57, C Smith via Xenomai wrote: > >>> I am using Xenomai 2.6.5, x86 32bit SMP kernel 3.18.20, Intel Core > >>>

Re: Periodic timing varies across boots

2019-02-27 Thread Philippe Gerum via Xenomai
On 2/28/19 6:56 AM, C Smith via Xenomai wrote: > On Mon, Feb 25, 2019 at 12:09 AM Jan Kiszka wrote: > >> On 24.02.19 07:57, C Smith via Xenomai wrote: >>> I am using Xenomai 2.6.5, x86 32bit SMP kernel 3.18.20, Intel Core >>> i5-4460, and I have found a periodic timing problem on one particular

Re: Periodic timing varies across boots

2019-02-27 Thread C Smith via Xenomai
On Mon, Feb 25, 2019 at 12:09 AM Jan Kiszka wrote: > On 24.02.19 07:57, C Smith via Xenomai wrote: > > I am using Xenomai 2.6.5, x86 32bit SMP kernel 3.18.20, Intel Core > > i5-4460, and I have found a periodic timing problem on one particular > type > > of motherboard. > > > > I have a Xenomai

Re: Periodic timing varies across boots

2019-02-25 Thread Jan Kiszka via Xenomai
On 24.02.19 07:57, C Smith via Xenomai wrote: I am using Xenomai 2.6.5, x86 32bit SMP kernel 3.18.20, Intel Core i5-4460, and I have found a periodic timing problem on one particular type of motherboard. I have a Xenomai RT periodic task which outputs a pulse to the PC parallel port, and this

Periodic timing varies across boots

2019-02-23 Thread C Smith via Xenomai
I am using Xenomai 2.6.5, x86 32bit SMP kernel 3.18.20, Intel Core i5-4460, and I have found a periodic timing problem on one particular type of motherboard. I have a Xenomai RT periodic task which outputs a pulse to the PC parallel port, and this pulse is measured on a frequency counter. This