Re: hrtimer become inaccurate with RT patch

2018-07-06 Thread Sebastian Andrzej Siewior
On 2018-07-06 16:22:16 [+0200], Daniel Wagner wrote: > Who can edit this page: > > https://wiki.linuxfoundation.org/realtime/preempt_rt_versions > > ? It still lists 4.1-rt as supported. updated. Sebastian

Re: hrtimer become inaccurate with RT patch

2018-07-06 Thread Daniel Wagner
On 07/02/2018 12:14 PM, Sebastian Andrzej Siewior wrote: On 2018-07-02 17:34:34 [+0800], gengdongjiu wrote: The Linux kernel version is v4.1.46, and the preempt_rt patch is patch-4.1.46-rt52.patch. the 4.1 series is no longer supported (neither RT wise nor non-RT, https://www.kernel.org/cat

Re: hrtimer become inaccurate with RT patch

2018-07-02 Thread Thomas Gleixner
On Mon, 2 Jul 2018, John Stultz wrote: > On Mon, Jul 2, 2018 at 2:34 AM, gengdongjiu wrote: > > Hi Thomas/Anna/John, > > > > Recently I found that the hrtimer become inaccurate when there is a RT > > process runs on the same cpu core, and the kernel has applied preempt_rt > > patch. > > The Li

Re: hrtimer become inaccurate with RT patch

2018-07-02 Thread Sebastian Andrzej Siewior
On 2018-07-02 19:19:07 [+0800], gengdongjiu wrote: > Hi Sebastian , Hi gengdongjiu, > > the 4.1 series is no longer supported (neither RT wise nor non-RT, > > https://www.kernel.org/category/releases.html). I suggest to move away. > > If you notice this problem now it is hardly a long running proj

Re: hrtimer become inaccurate with RT patch

2018-07-02 Thread John Stultz
On Mon, Jul 2, 2018 at 2:34 AM, gengdongjiu wrote: > Hi Thomas/Anna/John, > > Recently I found that the hrtimer become inaccurate when there is a RT > process runs on the same cpu core, and the kernel has applied preempt_rt > patch. > The Linux kernel version is v4.1.46, and the preempt_rt pat

Re: hrtimer become inaccurate with RT patch

2018-07-02 Thread gengdongjiu
Hi Sebastian , Thanks for the answer. On 2018/7/2 18:14, Sebastian Andrzej Siewior wrote: > On 2018-07-02 17:34:34 [+0800], gengdongjiu wrote: >> The Linux kernel version is v4.1.46, and the preempt_rt patch is >> patch-4.1.46-rt52.patch. > > the 4.1 series is no longer supported (neither RT

Re: hrtimer become inaccurate with RT patch

2018-07-02 Thread Sebastian Andrzej Siewior
On 2018-07-02 17:34:34 [+0800], gengdongjiu wrote: > The Linux kernel version is v4.1.46, and the preempt_rt patch is > patch-4.1.46-rt52.patch. the 4.1 series is no longer supported (neither RT wise nor non-RT, https://www.kernel.org/category/releases.html). I suggest to move away. If you notic

hrtimer become inaccurate with RT patch

2018-07-02 Thread gengdongjiu
Hi Thomas/Anna/John, Recently I found that the hrtimer become inaccurate when there is a RT process runs on the same cpu core, and the kernel has applied preempt_rt patch. The Linux kernel version is v4.1.46, and the preempt_rt patch is patch-4.1.46-rt52.patch. I know that in the preempt_rt