On Sun, 23 Jul 2006, Fred Tyler wrote:

> I'm having a serious problem with Apache::Resource not killing
> children and ending up with all of the children in a hung state at the
> memory limit (Linux 2.6, mod_perl 1.29, Apache 1.33).

For what it's worth you might want to take a look at Apache::SizeLimit
which was recently upgraded and now separate from the mod_perl core. If
you have a kernel later than 2.6.14 it reports the amount of shared by
copy-on-write successfully if I am reading the docs correctly.