[Python-Dev] iterzip()

2002年4月29日 16:10:36 -0400

> It acts about the same on Linux.
>> I don't see why it's a mystery. justtups() only uses one tuple at a
> time; it gets re-used from the free list every time. storetups() has
> to (py)malloc a new tuple every stinkin' time.
>> Note that there's a net excess of allocations in the storetup() case,
> so we invoke the garbage collector every n/700 times through the
> loop. I've noted before that it doesn't make much sense to invoke GC
> unless there is at least one deallocation; you can't reclaim anything
> if there are no DECREFs.

But note the difference between 2.2 and 2.3 that I measured
(repeatedly -- I don't know why Holger doesn't see this). Did the GC
algorithm change between the two? *Something* must've changed.
--Guido van Rossum (home page: http://www.python.org/~guido/)