Martin Geisler <[EMAIL PROTECTED]> writes:
> [...] This means that an empty Deferred occupies about 210 bytes in
> memory. Adding a callback right away [...] increases the size per
> Deferred to about 500 bytes.
Looking at the definition of the Deferred class one sees that it is
quite simple:
class Deferred:
called = 0
paused = 0
timeoutCall = None
_debugInfo = None
debug = False
def __init__(self):
self.callbacks = []
# ... lots of methods ...
Counting 4 bytes for the integers (called, paused), 4 bytes for the
object references (timeoutCall, _debugInfo, callbacks), 1 byte for the
boolean (debug) I get this to be about 21 bytes.
But to this we must add quite a lot of overhead as explained here:
http://groups.google.dk/group/comp.lang.python/msg/4e0f9800c5898334
Using the heuristic there, an integer takes up 32 bytes and an empty
list takes up 40 bytes! Ugh...
--
Martin Geisler
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