Summary:
`revlog.ancestor` is expensive on long changelog, but is only called a few
(about 30) times for smartlog usage. Therefore we could simply cache the
result in a key-value database.
This speeds up smartlog by about 200ms.
Test Plan: Added a new test
Reviewers: #mercurial, stash
Reviewed By: stash
Subscribers: stash, mjpieters
Differential Revision: https://phabricator.intern.facebook.com/D5135746
Signature: t1:5135746:1495783503:411260551fd29fda42c9fc809b56f8f77fb2eaf4
Summary:
Like other profilers in Mercurial, provide a standalone script to measure
performance of other scripts directly.
Test Plan: Run the new script to profile ipython and it works.
Reviewers: #mercurial, rmcelroy
Reviewed By: rmcelroy
Subscribers: mjpieters
Differential Revision: https://phabricator.intern.facebook.com/D5112547
Signature: t1:5112547:1495562125:0d15b48b3aa9e6ead43fbb8166dabf13b6273ef2
