frequent hangs, latent scheduling bug?

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hello redhatters,

i'm getting frequent hangs recently..  but get this..  i attach to the
process with gdb, then just quit gdb, and it unhangs!  how am i supposed
to track this down?

this system is nothing but latest stable rpm software.  these hangs have
happened (repeatedly) so far in evolution(1.4.4), galeon(1.2.7),
gthumb(2.0.1), and gnucash(1.8.7), in either kde or gnome, under redhat
9, all up2date.  i've tried various kernels, 2.4.20-18, 2.4.20-19,
2.4.20-20, no difference.

before 3-6 weeks or so ago it wasn't happening.  dunno if i should blame
up2dates or what.  could be i just wasn't yet putting quite so heavy a
load on the machine back then?

is this happening to anyone else?

my best guess is it's some sort of latent scheduling bug, brought out
under load, that is, when i've got enough going to really call
significantly upon swap.

i only discovered the gdb bit when the evolution folks asked me to
produce a backtrace with gdb.  they say evolution's backtrace is normal,
no deadlock.

if this is some latent bug it seems it would be worthwhile to track it
down, but i'd need some help..  otherwise i expect i'll just carry on
trying to ignore it until i get enough spare cycles to install something
different, like maybe fedora?

tia,
greg



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