Mercurial > hg
view tests/test-issue1877.t @ 33799:05264fc9d8d6
util: make nogc effective for CPython
279cd80059d4 made `util.nogc` a no-op. It was to optimize PyPy. But it slows
down CPython if many objects (like 300k+) are created.
For example, running `hg log -r .` without extensions in `hg-committed` with
14k+ obsmarkers have the following times:
before | after
hg | chg | hg | chg
-----------------------------
1.262 | 0.860 | 1.077 | 0.619 (seconds, best of 20 runs)
Therefore let's re-enable nogc for CPython.
Differential Revision: https://phab.mercurial-scm.org/D402
author | Jun Wu <quark@fb.com> |
---|---|
date | Mon, 14 Aug 2017 22:28:59 -0700 |
parents | 2fc86d92c4a9 |
children |
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https://bz.mercurial-scm.org/1877 $ hg init a $ cd a $ echo a > a $ hg add a $ hg ci -m 'a' $ echo b > a $ hg ci -m'b' $ hg up 0 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg book main $ hg book * main 0:cb9a9f314b8b $ echo c > c $ hg add c $ hg ci -m'c' created new head $ hg book * main 2:d36c0562f908 $ hg heads changeset: 2:d36c0562f908 bookmark: main tag: tip parent: 0:cb9a9f314b8b user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: c changeset: 1:1e6c11564562 user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: b $ hg up 1e6c11564562 1 files updated, 0 files merged, 1 files removed, 0 files unresolved (leaving bookmark main) $ hg merge main 1 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ hg book main 2:d36c0562f908 $ hg ci -m'merge' $ hg book main 2:d36c0562f908 $ cd ..