ea19489532
Add t/helper/test-lazy-init-name-hash.c test code to demonstrate performance times for lazy_init_name_hash() using the original single-threaded and the new multi-threaded code paths. Includes a --dump option to dump the created hashmaps to stdout. You can use this to run both code paths and confirm that they generate the same hashmaps. Includes a --analyze option to analyze performance of both code paths over a range of index sizes to help you find a lower bound for the LAZY_THREAD_COST in name-hash.c. For example, passing "-a 4000" will set "istate.cache_nr" to 4000 and then try the multi-threaded code -- probably giving 2 threads with 2000 entries each. It will then run both the single-threaded (1x4000) and the multi-threaded (2x2000) and compare the times. It will then repeat the test with 8000, 12000, and etc. so that you can see the cross over. Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com> |
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| .. | ||
| .gitignore | ||
| test-chmtime.c | ||
| test-config.c | ||
| test-ctype.c | ||
| test-date.c | ||
| test-delta.c | ||
| test-dump-cache-tree.c | ||
| test-dump-split-index.c | ||
| test-dump-untracked-cache.c | ||
| test-fake-ssh.c | ||
| test-genrandom.c | ||
| test-hashmap.c | ||
| test-index-version.c | ||
| test-lazy-init-name-hash.c | ||
| test-line-buffer.c | ||
| test-match-trees.c | ||
| test-mergesort.c | ||
| test-mktemp.c | ||
| test-parse-options.c | ||
| test-path-utils.c | ||
| test-prio-queue.c | ||
| test-read-cache.c | ||
| test-regex.c | ||
| test-revision-walking.c | ||
| test-run-command.c | ||
| test-scrap-cache-tree.c | ||
| test-sha1-array.c | ||
| test-sha1.c | ||
| test-sha1.sh | ||
| test-sigchain.c | ||
| test-string-list.c | ||
| test-submodule-config.c | ||
| test-subprocess.c | ||
| test-svn-fe.c | ||
| test-urlmatch-normalization.c | ||
| test-wildmatch.c | ||