[pypy-commit] pypy default: Update: now stm is 'only' 2x slower rather than 10x on translate.py.
arigo
noreply at buildbot.pypy.org
Wed Jul 2 20:59:44 CEST 2014
Author: Armin Rigo <arigo at tunes.org>
Branch:
Changeset: r72319:787e204c5c92
Date: 2014-07-02 20:10 +0200
http://bitbucket.org/pypy/pypy/changeset/787e204c5c92/
Log: Update: now stm is 'only' 2x slower rather than 10x on translate.py.
diff --git a/pypy/doc/stm.rst b/pypy/doc/stm.rst
--- a/pypy/doc/stm.rst
+++ b/pypy/doc/stm.rst
@@ -92,9 +92,9 @@
We're busy fixing them as we find them; feel free to `report bugs`_.
* It runs with an overhead as low as 20% on examples like "richards".
- There are also other examples with higher overheads --up to 10x for
- "translate.py"-- which we are still trying to understand. One suspect
- is our partial GC implementation, see below.
+ There are also other examples with higher overheads --currently up to
+ 2x for "translate.py"-- which we are still trying to understand.
+ One suspect is our partial GC implementation, see below.
* Currently limited to 1.5 GB of RAM (this is just a parameter in
`core.h`__). Memory overflows are not correctly handled; they cause
@@ -111,9 +111,8 @@
* The GC is new; although clearly inspired by PyPy's regular GC, it
misses a number of optimizations for now. Programs allocating large
- numbers of small objects that don't immediately die, as well as
- programs that modify large lists or dicts, suffer from these missing
- optimizations.
+ numbers of small objects that don't immediately die (surely a common
+ situation) suffer from these missing optimizations.
* The GC has no support for destructors: the ``__del__`` method is never
called (including on file objects, which won't be closed for you).
More information about the pypy-commit
mailing list