2015-02-13 12:27 GMT+01:00 Serhiy Storchaka <storch...@gmail.com>: > On 13.02.15 12:07, Victor Stinner wrote: >> >> * C implementation: scandir is at least 3.5x faster than listdir, up >> to 44.6x faster on Windows > > > Results on Windows was obtained in the becnhmark that doesn't drop disk > caches and runs listdir before scandir.
The benchmark code is here: http://bugs.python.org/file38120/bench_scandir2.py Eeach test is repeated 5 times, I compared the duration of the fastest call. A test calls the function 5 times in a loop. Anyway, it's not the first call to listdir() which fills the disk cache, but the call to count_entries() (which is implemented with os.scandir). So is there any issue in the benchmark script or not? On Linux, you can use "bench_nocache" (and "bench_nostat_nocache") which flushs the cache: it writes "3" into /proc/sys/vm/drop_caches. scandir is always faster when the disk cache is flushed. Victor _______________________________________________ Python-Dev mailing list Python-Dev@python.org https://mail.python.org/mailman/listinfo/python-dev Unsubscribe: https://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
