>The FreeBSD patch, setting the value to 0x100000 >seems to be enough for most of our zope servers,...
Is that value in /bytes/? In modern solaris implementations of posix threads, the default stack size is 2 megabytes fo 64 bit machines. I can't fathom what your performance consideration would be; I'd think there'd not be one, with any reasonable amount of memory on your server. C// -- http://mail.python.org/mailman/listinfo/python-list