Re: [PATCH RFC 0/3] Improve stability of system clock

On Thu, Jun 8, 2017 at 9:17 AM, Miroslav Lichvar wrote: > On Fri, May 19, 2017 at 05:35:38PM -0700, John Stultz wrote: >> >> On Wed, May 17, 2017 at 10:22 AM, Miroslav Lichvar >> >> wrote: >> >> > Is there a better way to run the timekeeping code in an

Re: [PATCH RFC 0/3] Improve stability of system clock

On Thu, Jun 8, 2017 at 9:17 AM, Miroslav Lichvar wrote: > On Fri, May 19, 2017 at 05:35:38PM -0700, John Stultz wrote: >> >> On Wed, May 17, 2017 at 10:22 AM, Miroslav Lichvar >> >> wrote: >> >> > Is there a better way to run the timekeeping code in an userspace >> >> > application? I suspect

Re: [PATCH RFC 0/3] Improve stability of system clock

On Fri, May 19, 2017 at 05:35:38PM -0700, John Stultz wrote: > >> On Wed, May 17, 2017 at 10:22 AM, Miroslav Lichvar > >> wrote: > >> > Is there a better way to run the timekeeping code in an userspace > >> > application? I suspect it would need something like the Linux

Re: [PATCH RFC 0/3] Improve stability of system clock

On Fri, May 19, 2017 at 05:35:38PM -0700, John Stultz wrote: > >> On Wed, May 17, 2017 at 10:22 AM, Miroslav Lichvar > >> wrote: > >> > Is there a better way to run the timekeeping code in an userspace > >> > application? I suspect it would need something like the Linux Kernel > >> > Library

Re: [PATCH RFC 0/3] Improve stability of system clock

John Stultz writes: > On Wed, May 17, 2017 at 9:54 PM, Richard Cochran > wrote: >> On Wed, May 17, 2017 at 04:06:07PM -0700, John Stultz wrote: >>> On Wed, May 17, 2017 at 10:22 AM, Miroslav Lichvar >>> wrote: >>> > Is

Re: [PATCH RFC 0/3] Improve stability of system clock

John Stultz writes: > On Wed, May 17, 2017 at 9:54 PM, Richard Cochran > wrote: >> On Wed, May 17, 2017 at 04:06:07PM -0700, John Stultz wrote: >>> On Wed, May 17, 2017 at 10:22 AM, Miroslav Lichvar >>> wrote: >>> > Is there a better way to run the timekeeping code in an userspace >>> >

Re: [PATCH RFC 0/3] Improve stability of system clock

On Wed, May 17, 2017 at 9:54 PM, Richard Cochran wrote: > On Wed, May 17, 2017 at 04:06:07PM -0700, John Stultz wrote: >> On Wed, May 17, 2017 at 10:22 AM, Miroslav Lichvar >> wrote: >> > Is there a better way to run the timekeeping code in an

Re: [PATCH RFC 0/3] Improve stability of system clock

On Wed, May 17, 2017 at 9:54 PM, Richard Cochran wrote: > On Wed, May 17, 2017 at 04:06:07PM -0700, John Stultz wrote: >> On Wed, May 17, 2017 at 10:22 AM, Miroslav Lichvar >> wrote: >> > Is there a better way to run the timekeeping code in an userspace >> > application? I suspect it would need

Re: [PATCH RFC 0/3] Improve stability of system clock

On Wed, May 17, 2017 at 04:06:07PM -0700, John Stultz wrote: > On Wed, May 17, 2017 at 10:22 AM, Miroslav Lichvar > wrote: > > Is there a better way to run the timekeeping code in an userspace > > application? I suspect it would need something like the Linux Kernel > >

Re: [PATCH RFC 0/3] Improve stability of system clock

On Wed, May 17, 2017 at 04:06:07PM -0700, John Stultz wrote: > On Wed, May 17, 2017 at 10:22 AM, Miroslav Lichvar > wrote: > > Is there a better way to run the timekeeping code in an userspace > > application? I suspect it would need something like the Linux Kernel > > Library project. > > I

Re: [PATCH RFC 0/3] Improve stability of system clock

On Wed, May 17, 2017 at 10:22 AM, Miroslav Lichvar wrote: > On Wed, May 17, 2017 at 10:02:00AM -0700, John Stultz wrote: >> On Wed, May 17, 2017 at 9:57 AM, Miroslav Lichvar >> wrote: >> > On Wed, May 17, 2017 at 09:30:31AM -0700, John Stultz wrote: >>

Re: [PATCH RFC 0/3] Improve stability of system clock

On Wed, May 17, 2017 at 10:22 AM, Miroslav Lichvar wrote: > On Wed, May 17, 2017 at 10:02:00AM -0700, John Stultz wrote: >> On Wed, May 17, 2017 at 9:57 AM, Miroslav Lichvar >> wrote: >> > On Wed, May 17, 2017 at 09:30:31AM -0700, John Stultz wrote: >> >> Could you submit your linux-tktest

Re: [PATCH RFC 0/3] Improve stability of system clock

On Wed, May 17, 2017 at 10:02:00AM -0700, John Stultz wrote: > On Wed, May 17, 2017 at 9:57 AM, Miroslav Lichvar wrote: > > On Wed, May 17, 2017 at 09:30:31AM -0700, John Stultz wrote: > >> Could you submit your linux-tktest infrastructure to the kselftests dir? > > > > I

Re: [PATCH RFC 0/3] Improve stability of system clock

On Wed, May 17, 2017 at 10:02:00AM -0700, John Stultz wrote: > On Wed, May 17, 2017 at 9:57 AM, Miroslav Lichvar wrote: > > On Wed, May 17, 2017 at 09:30:31AM -0700, John Stultz wrote: > >> Could you submit your linux-tktest infrastructure to the kselftests dir? > > > > I can, but it's a mess

Re: [PATCH RFC 0/3] Improve stability of system clock

On Wed, May 17, 2017 at 9:57 AM, Miroslav Lichvar wrote: > On Wed, May 17, 2017 at 09:30:31AM -0700, John Stultz wrote: >> So thanks for sending these out. I still need to look them over in >> depth, but can I make another ask here? :) >> >> Could you submit your

Re: [PATCH RFC 0/3] Improve stability of system clock

On Wed, May 17, 2017 at 9:57 AM, Miroslav Lichvar wrote: > On Wed, May 17, 2017 at 09:30:31AM -0700, John Stultz wrote: >> So thanks for sending these out. I still need to look them over in >> depth, but can I make another ask here? :) >> >> Could you submit your linux-tktest infrastructure to

Re: [PATCH RFC 0/3] Improve stability of system clock

On Wed, May 17, 2017 at 09:30:31AM -0700, John Stultz wrote: > So thanks for sending these out. I still need to look them over in > depth, but can I make another ask here? :) > > Could you submit your linux-tktest infrastructure to the kselftests dir? I can, but it's a mess that breaks

Re: [PATCH RFC 0/3] Improve stability of system clock

On Wed, May 17, 2017 at 09:30:31AM -0700, John Stultz wrote: > So thanks for sending these out. I still need to look them over in > depth, but can I make another ask here? :) > > Could you submit your linux-tktest infrastructure to the kselftests dir? I can, but it's a mess that breaks

Re: [PATCH RFC 0/3] Improve stability of system clock

On Wed, May 17, 2017 at 9:13 AM, Miroslav Lichvar wrote: > This is an attempt to improve stability and accuracy of the system clock > with very accurate time sources like the new PTP KVM clock or NTP/PTP > using hardware timestamping. It affects mainly kernels running with >

Re: [PATCH RFC 0/3] Improve stability of system clock

On Wed, May 17, 2017 at 9:13 AM, Miroslav Lichvar wrote: > This is an attempt to improve stability and accuracy of the system clock > with very accurate time sources like the new PTP KVM clock or NTP/PTP > using hardware timestamping. It affects mainly kernels running with > NOHZ. It requires

[PATCH RFC 0/3] Improve stability of system clock

This is an attempt to improve stability and accuracy of the system clock with very accurate time sources like the new PTP KVM clock or NTP/PTP using hardware timestamping. It affects mainly kernels running with NOHZ. It requires updating of the old ia64 and powerpc vsyscalls. The main problem is

[PATCH RFC 0/3] Improve stability of system clock

This is an attempt to improve stability and accuracy of the system clock with very accurate time sources like the new PTP KVM clock or NTP/PTP using hardware timestamping. It affects mainly kernels running with NOHZ. It requires updating of the old ia64 and powerpc vsyscalls. The main problem is