Neil Toronto added the comment:
Christian: Thanks for that, I'll have to remember DEBUG_LEAK in the
future. :)
It looks like it may be acting correctly since there *is* now a
fastglobals object that needs collecting, and also a new tuple built
from co_names + "__builtins__". I do
New submission from Neil Toronto:
I've attached a patch to accelerate type and instance lookups using a
specialized cache. It includes a benchmarking script (fastattr_test.py)
that tests both successful and failing lookups on list, dict and tuple,
and a simple, deep hierarchy. Benchmark re
Neil Toronto added the comment:
Attribute access that happens only once or very infrequently probably
shouldn't go through the cache machinery - it'll only slow things down.
(Updating slots for example.) Maybe _PyType_Lookup should remain the
same, with _PyType_CachingLookup added for
Neil Toronto added the comment:
I've attached the microbenchmarks I was using for my own version of
attribute caching. For list, tuple, dict, and a deep hierarchy, it tests
accessing type attributes (cls.__class__), class attributes
(cls.__init__), class attributes via instance (inst.__cl
New submission from Neil Toronto:
This is a half-port of the patches in #1685986 and #1700288 to Python
3.0. Speedups are about the same as in those patches applied to their
respective Python versions for minibenchmarks (included in the patch as
fastattr_test_py3k.py): 5%-30% or more depending
Neil Toronto added the comment:
This patch adds the ability to invalidate all of a subclasses' cache
entries upon setattr rather than updating just one cache entry. It's not
clear which of these is the Right Thing To Do, so I've made it an #ifdef
for now. It defaults to updati
Neil Toronto added the comment:
Yes, as well #1700288 (Armin's attribute lookup caching patch ported to
2.6) or #1685986 (Armin's original for 2.4), or whatever Raymond finds
most convenient.
__
Tracker <[EMAIL PROTECTED]>
<http://bugs.p
Neil Toronto added the comment:
Sorry - I'll be more clear. I'd love to see 2.6 get attribute lookup
caching, and Kevin's port (#1700288) of Armin's original 2.4 patch
(#1685986) does that for 2.6. #1685986 (2.4) should be closed and
#1700288 (2.6) should remain open. But R
Neil Toronto added the comment:
Well horse pucky. I plum forgot about deletes.
I've attached an update that properly clears the cache entry for the
deleted attribute for all non-shadowing subclasses. (It was a small
change.) Undef'ing ATTRCACHE_SETATTR_INVALIDATES should wor
Neil Toronto added the comment:
There's nothing it tests that standard unit tests don't, so it shouldn't
stick around as a unit test. I used it to time different types of
attribute lookups and left it in as an optimization aid.
The main test groups are '.' access, su
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