view README @ 26187:9cf65f43b49b

graphmod: compute slow revset query once prior to reachableroots (issue4782)

Because revsets query is evaluated lazily, "list(revs)" may take long for
complicated query. So we shouldn't iterate revs many times. This patch is the
easiest workaround for the issue4782. We could introduce more aggressive
caching, but it wouldn't be as fast as the simple baseset operation.

Gregory Szorc said "this makes `hg wip` on my Firefox clone ~4x faster than
3.5.1 (~6.5s to ~1.5s). This is after a regression in @ to ~45s."

Mercurial
=========

Mercurial is a fast, easy to use, distributed revision control tool
for software developers.

Basic install:

 $ make            # see install targets
 $ make install    # do a system-wide install
 $ hg debuginstall # sanity-check setup
 $ hg              # see help

Running without installing:

 $ make local      # build for inplace usage
 $ ./hg --version  # should show the latest version

See http://mercurial.selenic.com/ for detailed installation
instructions, platform-specific notes, and Mercurial user information.