New submission from Terry J. Reedy <tjre...@udel.edu>: >From msg88801 ''' for 3.1: raising the KEEPALIVE_SIZE_LIMIT to 32 as explained and motivated here:
msg64215 That's a simple non-disruptive change which makes a lot of sense due to the advances in CPU designs in the last 9 years. I determined the original value of 9 using benchmarks and similar statistics in 1999/2000. It's probably also a good time to remove the warning, now that the implementation has proven itself for so many years... /* Limit for the Unicode object free list stay alive optimization. The implementation will keep allocated Unicode memory intact for all objects on the free list having a size less than this limit. This reduces malloc() overhead for small Unicode objects. At worst this will result in PyUnicode_MAXFREELIST * (sizeof(PyUnicodeObject) + KEEPALIVE_SIZE_LIMIT + malloc()-overhead) bytes of unused garbage. Setting the limit to 0 effectively turns the feature off. Note: This is an experimental feature ! If you get core dumps when using Unicode objects, turn this feature off. */ #define KEEPALIVE_SIZE_LIMIT 9 ''' If this is as non-controversial as it seems, perhaps someone could change 9 to 32 and remove "Note: This is an experimental feature..." in time for rc2. ---------- components: Interpreter Core messages: 88981 nosy: tjreedy severity: normal status: open title: Raise Unicode KEEPALIVE_SIZE_LIMIT from 9 to 32? type: resource usage versions: Python 3.1 _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue6216> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
