Angela Kahealani wrote:
RedHat (or, as appropriate, substitute "Fedora") did a backport of NPTL
so that it was contained in the default distro of Fedora Core 1, but
may also have done for RH9, all of which is Legacy Fedora now. That that
happened doesn't mean it did in other distros based on 2.4.x.
Yeah, I new that. The nptl support stood out to me in FC1 because the
kernel rpm
had "nptl" in the name. It came with a slew of other backported 2.5/2.6
features.
As did the RH9 kernel, I think. Maybe an example, I think maybe the
O(1) scheduler wasn't
in the first RH9 factory kernel, but was added later, or something like
that <insert
confusion here>.
I'm finding old announcements from RH that one of the features of RH9 is
nptl,
but I'm not finding much in the way of details. I have a multi-threaded app
where two of the threads sleep on a conditional, waiting for a signal from
another thread, but one of the threads is "lazy", works fine for a
while, then
starts taking breaks, then sometimes quits working altogether. This
despite my
having set the priority and scheduling policies to pseudo-realtime and
there
appearing to be plenty of system resources available to do the job.
Maybe it's gone union.
While searching for something completely different, I came across that
tidbit
regarding the pre-nptl linux threads losing signals, which could explain
some of
the problems I'm having. Except I think the kernel has the nptl stuff
built in. I
don't see any references to NPTL in the config file.
Which is why you want to track down the NPTL.RPM from either RedHat or
the Fedora Legacy site for you 2.4 based RH9.
I'm not finding any references to a seperate nptl related rpm. And I
get confused,
because I read one thing that says linux thread support has been moved into
glibc, while in other places I find references to it being part of the
kernel.
