In article <[EMAIL PROTECTED]>, Mirko Dziadzka <[EMAIL PROTECTED]> wrote: > >I understand that the C implementation of Python use a global interpreter >lock to avoid problems, so doing CPU bound tasks in multiple threads >will not result in better performance on multi-CPU systems. > >However, I assumed that calls to (thread safe) C Library functions >release the global interpreter lock.
Generally speaking that only applies to I/O calls. >Today I checked the performance of some slow re.match() calls and found, >that the do not run in parallel on a multi-CPU system. > >1) Is there a reason for this? >2) Is the regex library not thread-safe? >3) Is it possible, to release the GIL in re.match() to > get more performance? Theoretically possible, but the usual rule applies: patches welcome -- Aahz ([EMAIL PROTECTED]) <*> http://www.pythoncraft.com/ "as long as we like the same operating system, things are cool." --piranha -- http://mail.python.org/mailman/listinfo/python-list
