Mercurial > hg
view contrib/python3-whitelist @ 35599:af25237be091
perf: add threading capability to perfbdiff
Since we are releasing the GIL during diffing, it is interesting to see how a
thread pool would perform on diffing. We add a new `--threads` argument to
commands. Synchronizing the thread pool is a bit complex because we want to be
able to reuse it from one run to another.
On my computer (i7 with 4 cores + hyperthreading), I get the following data for
about 12000 revisions:
threads wall comb wall gain comb overhead
none 31.596715 31.59 0.00% 0.00%
1 31.621228 31.62 -0.08% 0.09%
2 16.406202 32.8 48.08% 3.83%
3 11.598334 34.76 63.29% 10.03%
4 9.205421 36.77 70.87% 16.40%
5 8.517604 42.51 73.04% 34.57%
6 7.94645 47.58 74.85% 50.62%
7 7.434972 51.92 76.47% 64.36%
8 7.070638 55.34 77.62% 75.18%
Compared to the feature disabled (threads=0), the overhead is negligible with
the threading code (threads=1), and the gain is already 48% with two threads.
author | Boris Feld <boris.feld@octobus.net> |
---|---|
date | Sun, 17 Dec 2017 04:31:27 +0100 |
parents | aaeba70d5cbe |
children | a71316bfac87 |
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test-add.t test-addremove-similar.t test-addremove.t test-ancestor.py test-automv.t test-backwards-remove.t test-bheads.t test-bisect2.t test-bookmarks-merge.t test-bookmarks-strip.t test-branch-tag-confict.t test-casecollision.t test-cat.t test-changelog-exec.t test-check-commit.t test-check-execute.t test-check-module-imports.t test-check-pyflakes.t test-check-pylint.t test-check-shbang.t test-children.t test-commit-unresolved.t test-completion.t test-contrib-check-code.t test-contrib-check-commit.t test-debugrename.t test-diff-copy-depth.t test-diff-hashes.t test-diff-issue2761.t test-diff-newlines.t test-diff-reverse.t test-diff-subdir.t test-diffdir.t test-directaccess.t test-dirstate-nonnormalset.t test-doctest.py test-double-merge.t test-duplicateoptions.py test-empty-dir.t test-empty-file.t test-empty.t test-encoding-func.py test-excessive-merge.t test-execute-bit.t test-gpg.t test-hghave.t test-imports-checker.t test-issue1089.t test-issue1502.t test-issue1802.t test-issue1877.t test-issue1993.t test-issue522.t test-issue612.t test-issue619.t test-issue672.t test-issue842.t test-journal-exists.t test-locate.t test-lrucachedict.py test-manifest.py test-manifest-merging.t test-match.py test-merge-default.t test-merge-internal-tools-pattern.t test-merge-remove.t test-merge-revert.t test-merge-revert2.t test-merge-subrepos.t test-merge10.t test-merge2.t test-merge4.t test-merge5.t test-merge6.t test-merge7.t test-merge8.t test-mq-qimport-fail-cleanup.t test-permissions.t test-push-checkheads-partial-C1.t test-push-checkheads-partial-C2.t test-push-checkheads-partial-C3.t test-push-checkheads-partial-C4.t test-push-checkheads-pruned-B1.t test-push-checkheads-pruned-B2.t test-push-checkheads-pruned-B3.t test-push-checkheads-pruned-B4.t test-push-checkheads-pruned-B5.t test-push-checkheads-pruned-B6.t test-push-checkheads-pruned-B7.t test-push-checkheads-pruned-B8.t test-push-checkheads-superceed-A1.t test-push-checkheads-superceed-A2.t test-push-checkheads-superceed-A3.t test-push-checkheads-superceed-A4.t test-push-checkheads-superceed-A5.t test-push-checkheads-superceed-A6.t test-push-checkheads-superceed-A7.t test-push-checkheads-superceed-A8.t test-push-checkheads-unpushed-D1.t test-push-checkheads-unpushed-D2.t test-push-checkheads-unpushed-D3.t test-push-checkheads-unpushed-D4.t test-push-checkheads-unpushed-D5.t test-push-checkheads-unpushed-D6.t test-push-checkheads-unpushed-D7.t test-record.t test-rename-dir-merge.t test-rename-merge1.t test-rename.t test-revert-flags.t test-revert-unknown.t test-revlog-group-emptyiter.t test-revlog-mmapindex.t test-revlog-packentry.t test-run-tests.py test-show-stack.t test-simple-update.t test-sparse-clear.t test-sparse-merges.t test-sparse-requirement.t test-sparse-verbose-json.t test-status-terse.t test-uncommit.t test-unified-test.t test-unrelated-pull.t test-update-issue1456.t test-update-names.t test-update-reverse.t test-xdg.t