Message201062
In the first patch the counter was placed in the _dictkeysobject structure. In the second place it is placed in the PyDictObject so it now has no memory cost. Access time to new counter for non-modifying operations is same as in current code. The only additional cost is time cost for modifying operations. But modifying operations is usually much rare than non-modifying operations, and the incrementing one field takes only small part of the time needed for all operation. I don't think this will affect total performance of real programs. |
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2013-10-23 19:46:02 | serhiy.storchaka | set | recipients:
+ serhiy.storchaka, rhettinger, pitrou |
2013-10-23 19:46:02 | serhiy.storchaka | set | messageid: <1382557562.03.0.635238636735.issue19332@psf.upfronthosting.co.za> |
2013-10-23 19:46:02 | serhiy.storchaka | link | issue19332 messages |
2013-10-23 19:46:01 | serhiy.storchaka | create | |
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