Experimental Physics and Industrial Control System
On Wed, 2005-11-09 at 16:02 +0100, Ralph Lange wrote:
> Same results:
> 5 messages on Linux, 10 messages on HP-UX for the middle test.
What is the linux kernel version that you have for Debian 3.1?
Ernest
>
> Ralph
>
>
> Marty Kraimer wrote:
> > Ralph,
> >
> >
> > Can you turn on real time priorities and try again?
> >
> >
> > Look at configure/CONFIG_SITE
> >
> >
> >
> >
> > Marty
> >
> >
> >
> > On Nov 8, 2005, at 6:55 AM, Eric Norum wrote:
> >
> > > On Nov 8, 2005, at 6:22 AM, Ralph Lange wrote:
> > >
> > > > On my linux box (Debian 3.1), epicsMessageQueueTestHost yields
> > > > unexpected results:
> > > >
> > > > aragon: .../base/3-14-X > bin/linux-
> > > > x86/epicsMessageQueueTestHost
> > > > Simple single-thread tests.
> > > > [...]
> > > > Single receiver, single sender tests.
> > > > Systems with priority-based scheduler should send only
> > > > 4 or 5 messages (sender priority > receiver priority).
> > > > Sent 5 messages.
> > > > Systems with priority-based scheduler should send 10
> > > > messages (sender priority < receiver priority).
> > > > Sent 5 messages.
> > > > All systems should send 10 messages (sender pauses
> > > > after sending each message).
> > > > Sent 10 messages.
> > > >
> > > > Shouldn't the middle case (sender priority < receiver priority)
> > > > show 10 messages being sent instead of 5?
> > >
> > >
> > > You're seeing the fact that your linux box doesn't have a strict
> > > priority-based scheduler -- i.e. it's not a "real-time" operating
> > > system.
> > >
- Replies:
- Re: 3.14.8@Linux: OSS priorities problem? Ralph Lange
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- 3.14.8@Linux: OSS priorities problem? Ralph Lange
- Re: 3.14.8@Linux: OSS priorities problem? Eric Norum
- Re: 3.14.8@Linux: OSS priorities problem? Marty Kraimer
- Re: 3.14.8@Linux: OSS priorities problem? Ralph Lange
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