Mercurial > hg
view tests/test-issue842.t @ 16414:e8d37b78acfb
parsers: use base-16 trie for faster node->rev mapping
This greatly speeds up node->rev lookups, with results that are
often user-perceptible: for instance, "hg --time log" of the node
associated with rev 1000 on a linux-2.6 repo improves from 0.3
seconds to 0.03. I have not found any instances of slowdowns.
The new perfnodelookup command in contrib/perf.py demonstrates the
speedup more dramatically, since it performs no I/O. For a single
lookup, the new code is about 40x faster.
These changes also prepare the ground for the possibility of further
improving the performance of prefix-based node lookups.
author | Bryan O'Sullivan <bryano@fb.com> |
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date | Thu, 12 Apr 2012 14:05:59 -0700 |
parents | 41885892796e |
children | 2fc86d92c4a9 |
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http://mercurial.selenic.com/bts/issue842 $ hg init $ echo foo > a $ hg ci -Ama adding a $ hg up -r0000 0 files updated, 0 files merged, 1 files removed, 0 files unresolved $ echo bar > a Should issue new head warning: $ hg ci -Amb adding a created new head $ hg up -r0000 0 files updated, 0 files merged, 1 files removed, 0 files unresolved $ echo stuffy > a Should not issue new head warning: $ hg ci -q -Amc $ hg up -r0000 0 files updated, 0 files merged, 1 files removed, 0 files unresolved $ echo crap > a $ hg branch testing marked working directory as branch testing (branches are permanent and global, did you want a bookmark?) Should not issue warning: $ hg ci -q -Amd