[Zope] Re: Zope or Python blocking on select()

[Andrew Langmead]

On Feb 8, 2005, at 5:32 PM, Jens Vagelpohl wrote:

> I honestly don't remember where that whole "LD_ASSUME_KERNEL" stuff  
> originated, but it seems to be one of those myths that somehow never  
> die.


There was, at one point, a problem. That point in time has long since  
passed. A small python program that exhibited the problem is here.
<https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=97637

Red Hat 9 originally shipped with a version of glibc that they called  
"glibc-2.3.2-11.9.i386.rpm" which exhibited the problem. Later updates  
to RH9 supplied a fix. The current update to RH9's glibs is available  
at  
<ftp://ftp.redhat.com/pub/redhat/linux/updates/9/en/os/i386/glibc 
-2.3.2-27.9.7.i386.rpm>

This, of course, only affects the bugs underlying pthreads  
implementation. The Python level threading bugs in Python >= 2.2b1 and  
Python < 2.4 that can cause Zope to hang are not effected by  
LD_ASSUME_KERNEL.