> - the iobench results are between 2% acceleration (seek operations), > 16% slowdown for small-sized reads (4.31MB/s vs. 5.22 MB/s) and > 37% for large sized reads (154 MB/s vs. 235 MB/s). The speed > difference is probably in the UTF-8 decoder; I have already > restored the "runs of ASCII" optimization and am out of ideas for > further speedups. Again, having to scan the UTF-8 string twice > is probably one cause of slowdown.
I don't think it's the UTF-8 decoder because I see an even larger slowdown with simpler encodings (e.g. "-E latin1" or "-E utf-16le"). Thanks Antoine. _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
