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CONTRIBUTORS
author Pierre-Yves David <pierre-yves.david@octobus.net>
Mon, 11 Mar 2019 01:10:20 +0100
changeset 42237 9f45d3d526f9
parent 5514 c29efd272395
permissions -rw-r--r--
hgtagsfnodescache: inherit fnode from parent when possible If a changeset does not update the content of `.hgtags`, it means it will use the same file-node (for `.hgtags`) as its parents. In this case we can directly reuse the parent's file-node. We use this property when updating the `hgtagsfnodescache` taking a faster path if we already have a cached value for the parents of the node we are looking at. Doing so provides a large performance boost when looking at a lot of fnodes, especially on repository with very large manifest: timing for `tagsmod.fnoderevs(ui, repo, repo.changelog.revs())` mercurial: (41907 revisions, 1923 files) before: 6.9 seconds after: 2.7 seconds (-54%) pypy: (96266 revisions, 5198 files) before: 80 seconds after: 20 seconds (-75%) mozilla-central: (463411 revisions, 272080 files) before: 7166.4 seconds after: 47.8 seconds (-99%, x150 speedup) On a copy of mozilla-try with about 35K heads ans 1.7M changesets, this moves the computation from many hours to a couple of minutes, making it more interesting to do a full warm up of this cache before computing tags (from a cold cache). There seems to be other performance low hanging fruits, like avoiding the use of changectx or a more revision centric logic. However, the new code is fast enough for my needs right now.
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c29efd272395 Add note to CONTRIBUTORS file
Matt Mackall <mpm@selenic.com>
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[This file is here for historical purposes, all recent contributors
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should appear in the changelog directly]
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Andrea Arcangeli <andrea at suse.de>







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Thomas Arendsen Hein <thomas at intevation.de>












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Goffredo Baroncelli <kreijack at libero.it>







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Muli Ben-Yehuda <mulix at mulix.org>












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Mikael Berthe <mikael at lilotux.net>







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Benoit Boissinot <bboissin at gmail.com>







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Brendan Cully <brendan@kublai.com>


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Brendan Cully <brendan at kublai.com>







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Vincent Danjean <vdanjean.ml at free.fr>












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Jake Edge <jake at edge2.net>












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Michael Fetterman <michael.fetterman at intel.com>












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Edouard Gomez <ed.gomez at free.fr>







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Eric Hopper <hopper at omnifarious.org>







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Alecs King <alecsk at gmail.com>







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Volker Kleinfeld <Volker.Kleinfeld at gmx.de>







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Vadim Lebedev <vadim at mbdsys.com>












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Christopher Li <hg at chrisli.org>












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Chris Mason <mason at suse.com>







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Colin McMillen <mcmillen@cs.cmu.edu>


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Colin McMillen <mcmillen at cs.cmu.edu>







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Wojciech Milkowski <wmilkowski at interia.pl>







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Chad Netzer <chad.netzer at gmail.com>







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Bryan O'Sullivan <bos at serpentine.com>







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Vicent Seguí Pascual <vseguip at gmail.com>












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Sean Perry <shaleh at speakeasy.net>







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Nguyen Anh Quynh <aquynh at gmail.com>







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Ollivier Robert <roberto at keltia.freenix.fr>







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Alexander Schremmer <alex AT alexanderweb DOT de>


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Alexander Schremmer <alex at alexanderweb.de>







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Arun Sharma <arun at sharma-home.net>







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Josef "Jeff" Sipek <jeffpc at optonline.net>







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Kevin Smith <yarcs at qualitycode.com>







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TK Soh <teekaysoh at yahoo.com>







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Radoslaw Szkodzinski <astralstorm at gorzow.mm.pl>







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Samuel Tardieu <sam at rfc1149.net>







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K Thananchayan <thananck at yahoo.com>












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Andrew Thompson <andrewkt at aktzero.com>












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Michael S. Tsirkin <mst at mellanox.co.il>












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Rafael Villar Burke <pachi at mmn-arquitectos.com>







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Tristan Wibberley <tristan at wibberley.org>







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Mark Williamson <mark.williamson at cl.cam.ac.uk>














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