narrow: pass binary nodeids to generateellipsesbundle2() We generally work with binary nodeids and it's should be expected that new function gets the nodeids in binary form already. Differential Revision: https://phab.mercurial-scm.org/D6444

match: stabilize _rootsdirsandparents doctest Changeset c4b8f8637d7a tried to stabilize some matcher test by using a set. This did not work because the set order is not stable. To fix it, we post process the result to display a sorted version of the set.

narrow: factor out logic to build ellipses related b2parts in separate fn This will help us switch more cleanly to using wireprotocol commands instead of using exchange.pull() which exchanges more things then required. Differential Revision: https://phab.mercurial-scm.org/D6435

narrow: remove unrequired compat code for old versions of hg As the comment says, that if is only required for servers having hg version 3.1 and 3.2. Any client connecting having hg 3.1 or 3.2 locally and trying to use narrow should already be broken taking in account the changes which have been done since narrow moved to core. Differential Revision: https://phab.mercurial-scm.org/D6434

perf: make sure to explicitly disable any profiler after the first iteration The current code work, because of some edge behavior of the `profile` class. We make it explicit that the profiler is not in effect more than once.

test: add missing 'cd ..' to test case Differential Revision: https://phab.mercurial-scm.org/D6439

match: remove an obsolete comment about util.finddirs() Obsolete since 8e55c0c642c (util: make util.dirs() and util.finddirs() include root directory (API), 2017-05-16). Differential Revision: https://phab.mercurial-scm.org/D6433

match: de-flake test-doctest.py by not depending on util.dirs() order util.dirs() yields directories in arbitrary order, which has made test-doctest.py flaky. I think they have been flaky since d8e55c0c642c (util: make util.dirs() and util.finddirs() include root directory (API), 2017-05-16). Before that commit, I think util.dirs() would return at most one entry, so there was only one iteration order. This patch fixes the problem by making _rootsdirsandparents() return a set (whose __str__() is defined to be in sorted order, I believe). The only caller wanted a set anyway. Differential Revision: https://phab.mercurial-scm.org/D6432

perf: add an option to profile the benchmark section Running a perf command with --profile gather data for the whole command execution, including setup and cleanup. This can significantly alter the data. To work around this we introduce a new option, it trigger the profiling of only one iteration of the benchmarked section.

perf: add a `pre-run` option sometimes, the initial run is necessary to warm some cache that are not relevant for the current measurement. We add a new `perf.pre-run` option to specify a number of run of the benchmark logic that will happens before measurement are taken.