Subj : Re: NPTL, linuxthreads, and posix periodic timers (time shift)
To   : comp.programming.threads
From : David Schwartz
Date : Tue Jan 04 2005 11:10 am


"stéphane SARAGAGLIA" <saragagliaREMOVEIT@ifrance.com> wrote in message 
news:41daa21e$0$1597$8fcfb975@news.wanadoo.fr...

> I would like to use NPTL, but the results displayed by DISPLAY2 are
> alarming me...
> I have tried using 2.6.7 and 2.6.9 kernels, and I obtain the same 
> results...

    I think you're trying to rely on something that's not guaranteed.

> Why such a difference between 2.6 and 2.4 kernel ?

    Because you're relying on something that's not guaranteed, so nobody 
cares if it changes.

> Is there something wrong with my version of NPTL ?

    No.

> Are posix timers not suitable to my needs ?

    They are not suitable as they are coded. You should wrap them with code 
that provides the precise guarantees that you require.

> Is there something wrong with my source ?
> Is there a problem on librt.so library ?

    Not as far as I can tell.

    DS

.