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comparison mercurial/changegroup.py @ 41719:5f9d057ba28c

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changegroup: don't try to prune manifest nodes if not ellipses In non-ellipses case, the number of manifest nodes can be very big, and finding whether one of them can be pruned or not is very costly. For each node, we try to find the rev and the linkrev, which is expensive. Sending bit more manifest nodes seems better and much faster here. On our internal repository, this saves around 5 seconds on `hg tracked --addinclude <some_path>` on a narrow repo with ellipses disabled. Differential Revision: https://phab.mercurial-scm.org/D5782
author Pulkit Goyal <pulkit@yandex-team.ru>
date Thu, 31 Jan 2019 20:11:16 +0300
parents 0531dff73d0b
children 1c1c4ef8b72e
comparison
equal deleted inserted replaced
41718:a87ca1d7e61d 41719:5f9d057ba28c
1071 # No nodes to send because this directory is out of 1071 # No nodes to send because this directory is out of
1072 # the client's view of the repository (probably 1072 # the client's view of the repository (probably
1073 # because of narrow clones). Do this even for the root 1073 # because of narrow clones). Do this even for the root
1074 # directory (tree=='') 1074 # directory (tree=='')
1075 prunednodes = [] 1075 prunednodes = []
1076 elif not self._ellipses:
1077 # In non-ellipses case and large repositories, it is better to
1078 # prevent calling of store.rev and store.linkrev on a lot of
1079 # nodes as compared to sending some extra data
1080 prunednodes = nodes.copy()
1076 else: 1081 else:
1077 # Avoid sending any manifest nodes we can prove the 1082 # Avoid sending any manifest nodes we can prove the
1078 # client already has by checking linkrevs. See the 1083 # client already has by checking linkrevs. See the
1079 # related comment in generatefiles(). 1084 # related comment in generatefiles().
1080 prunednodes = self._prunemanifests(store, nodes, commonrevs) 1085 prunednodes = self._prunemanifests(store, nodes, commonrevs)