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Kirill Smelkov
ZODB
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edcc4bcb
Commit
edcc4bcb
authored
Feb 20, 2013
by
Marius Gedminas
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Explain the cache size numbers in greater detail
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020c6c18
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src/ZODB/tests/testCache.py
src/ZODB/tests/testCache.py
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src/ZODB/tests/testCache.py
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edcc4bcb
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@@ -463,7 +463,17 @@ mapping that is our root object and see its estimated size
...
@@ -463,7 +463,17 @@ mapping that is our root object and see its estimated size
pickletools.dis(conn._storage.load(conn.root._root._p_oid)[0]))
pickletools.dis(conn._storage.load(conn.root._root._p_oid)[0]))
to see the differences.
to see the differences in the first pickle (encoding the object class).
and
pickletools.dis(conn._storage.load(conn.root._root._p_oid)[0][N:]))
to see the differences in the second pickle (encoding the object state,
here N is the length of the first pickle).
These sizes are then rounded up to a multiple of 64, to fit in a
24-bit field for obscure reasons having to do with C structure size
BBB due to evil packages shipping their own copies of cPersistence.h.
We add some data and the cache grows:
We add some data and the cache grows:
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