Experimental Physics and
Industrial Control System

Know that now, but I *am* still amazed that one can't get prioritized
scheduling of threads (at a lower priority) on Linux as a non privileged
user (this is allowed on windows for example).

Jeff

> -----Original Message-----
> From: Ralph Lange [mailto:[email protected]]
> Sent: Friday, November 18, 2005 3:42 AM
> To: Jeff Hill
> Subject: Re: posix thread priorities
> 
> Jeff,
> 
> wasn't it that you had to be running the soft IOC as root on Linux to
> see the OS priorities?
> 
> Ralph
> 
> 
> Jeff Hill wrote:
> 
> >Pursuing this a bit further, I notice, using epicsThreadShowAll, that the
> >OSI => OSD priority mapping maybe isn't working on POSIX (the OSSPRI
> column
> >is always zero)?
> >
> >Again, this is building with USE_POSIX_THREAD_PRIORITY_SCHEDULING = YES.
> >
> >Jeff
> >
> >epics> epicsThreadShowAll
> >            NAME     EPICS ID   PTHREAD ID   OSIPRI  OSSPRI  STATE
> >          _main_    0x8ec7128            0      0       0       OK
> >          errlog    0x8eca338   3076283312     10       0       OK
> >          taskwd    0x8ecf630   3076012976     10       0       OK
> >      timerQueue    0x8f0e630   3075611568     70       0       OK
> >           cbLow    0x8f0f4c8   3074816944     59       0       OK
> >        cbMedium    0x8f0e130   3073760176     64       0       OK
> >          cbHigh    0x8f0f848   3072703408     71       0       OK
> >        dbCaLink    0x8ecdeb8   3071646640     50       0       OK
> >        scanOnce    0x8f134a0   3070589872     70       0       OK
> >          scan10    0x8f139c8   3069533104     60       0       OK
> >           scan5    0x8f13be8   3068476336     61       0       OK
> >           scan2    0x8f13e08   3067419568     62       0       OK
> >           scan1    0x8f14028   3066362800     63       0       OK
> >         scan0.5    0x8f14248   3065306032     64       0       OK
> >         scan0.2    0x8f14468   3064249264     65       0       OK
> >         scan0.1    0x8f14688   3063192496     66       0       OK
> >       CAC-event    0x8f2fe38   3062397872     52       0       OK
> >         CAS-TCP    0x8f36b30   3061865392     16       0       OK
> >      CAS-beacon    0x8f36d60   3061463984     14       0       OK
> >         CAS-UDP    0x8eca0f8   3061062576     12       0       OK
> >       CAS-event    0x8f5a670   3056245680     18       0       OK
> >      CAS-client    0x8f6e0e8   3055188912     20       0       OK
> >
> >Jeff
> >__________________________________________________________
> >Jeffrey O. Hill               Mail         [email protected]
> >LANL MS H820                  Voice        505 665 1831
> >Los Alamos NM 87545 USA       Fax          505 665 5107
> >
> >Jeff
> >__________________________________________________________
> >Jeffrey O. Hill               Mail         [email protected]
> >LANL MS H820                  Voice        505 665 1831
> >Los Alamos NM 87545 USA       Fax          505 665 5107
> >
> >
> >
> >
> 
> --
> Ralph Lange               [email protected]     Tel: +49 30 6392-2117
> BESSY Controls Group      www.bessy.de             Fax:      ...   -4859

References:

Re: posix thread priorities Ralph Lange

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