New submission from Jake Northey <janort...@connamara.com>:
For an illustration of the performance implications of the __getitem__ and __setitem__ implementation, see the article below. https://medium.com/@rvprasad/performance-of-system-v-style-shared-memory-support-in-python-3-8-d7a7d1b1fb96 The issue appears to be due to the summing of ShareableList item sizes to generate an offset for the requested item. Perhaps an offset-based index could be created in which the allocation sizes could be constructed by comparing two offets. ---------- components: Library (Lib) messages: 357239 nosy: Jake Northey, davin priority: normal severity: normal status: open title: ShareableList read and write access is O(N), should be O(1) type: performance versions: Python 3.8 _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue38891> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
