[mythtv-users] Mythbuntu 8.10 and Realtime Priority
james at ultratans.com
Fri Feb 20 19:52:13 UTC 2009
On Fri, 2009-02-20 at 14:20 -0500, James Crow wrote:
> On Fri, 2009-02-20 at 10:59 -0800, Mark Knecht wrote:
> > On Fri, Feb 20, 2009 at 10:19 AM, James Crow <james at ultratans.com> wrote:
> > > On Fri, 2009-02-20 at 10:03 -0800, Mark Knecht wrote:
> The kernel is stock Mythbuntu. Here is the info:
> james at mythbedrm:/boot$ grep
> CONFIG_PREEMPT_RT /boot/config-2.6.27-9-generic
> james at mythbedrm:/boot$ cat /proc/sys/kernel/sched_rt_period_us
> james at mythbedrm:/boot$ cat /proc/sys/kernel/sched_rt_runtime_us
> james at mythbedrm:/boot$
> The lack of the kernel options in my config file would indicate that I
> am not using a realtime kernel. Does the presence of
> the /proc/sys/kernel/* files indicate some of the RT patches are
I found a RT enabled Ubuntu kernel and installed it. The problem with
it is that it is not SMP.
james at mythbedrm:~$ grep PREEMPT_RT /boot/config-2.6.27-3-rt
james at mythbedrm:~$ cat /proc/sys/kernel/sched_rt_period_us
james at mythbedrm:~$ cat /proc/sys/kernel/sched_rt_runtime_us
It would appear that I am definitely running with a RT enabled kernel. I
also have lost one core of my AMD64 x2 CPU.
I started playback of a recording and the output of top showed
mythfrontend with a PR of 20 not RT like some of the kernel threads. The
log file shows that the FE is trying realtime:
2009-02-20 14:47:48.100 Using realtime priority.
Does anyone else have RT and can point out my problem?
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