Mercurial > hg
view tests/notcapable @ 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 | 1ac628cd7113 |
children | dedab036215d |
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# Disable the $CAP wire protocol capability. if test -z "$CAP" then echo "CAP environment variable not set." fi cat > notcapable-$CAP.py << EOF from mercurial import extensions, peer, localrepo def extsetup(): extensions.wrapfunction(peer.peerrepository, 'capable', wrapcapable) extensions.wrapfunction(localrepo.localrepository, 'peer', wrappeer) def wrapcapable(orig, self, name, *args, **kwargs): if name in '$CAP'.split(' '): return False return orig(self, name, *args, **kwargs) def wrappeer(orig, self): # Since we're disabling some newer features, we need to make sure local # repos add in the legacy features again. return localrepo.locallegacypeer(self) EOF echo '[extensions]' >> $HGRCPATH echo "notcapable-$CAP = `pwd`/notcapable-$CAP.py" >> $HGRCPATH