[Python-Dev] collections module

[Guido van Rossum]

> OpenBSD 3.3, i386 2.4Ghz P4 Celeron, 256MB, 128kB cache
> 
> before  after
> ------  -----
> 1.2     0.64
> 1.15    0.60
> 1.16    0.60
> 1.16    0.60
> 1.16    0.61
> 1.15    0.60
> 1.13    0.61
> 1.15    0.59
> 1.14    0.62
> 1.15    0.60
> 
> before: 15773 pystones, 29.9 mPB
> after:  12690 pystones, 31.4 mPB

What's the mPB number?  If its the time to complete parrotbench, this
is actually a slowdown, just as for pystone.

> Switch back to CVS:
> 
> 19531, 19379, 19531, 19379, 19305, 19084 pystones, 31.4 mPB
> 
> Switch back to Tim's patch:
> 
> 15015, 15480, 14588 pystones
> 
> should not need, but:
> make clean && make  (just make on previous, only listobject.c being recompiled)
> 
> Still patched: 
> 13158, 14006, 13193; restart python; 15923, 16722, 16023
> restart python; 12953, 13698, 12953, 13513
> 
> Well, pystones are all over the map on this box.  But the
> improvement is there for punchit and the parrotbench benchmark is
> solid across the change.

Unclear.  Please clarify mPB.

--Guido van Rossum (home page: http://www.python.org/~guido/)