Mercurial > hg
view tests/test-bdiff.py.out @ 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> |
---|---|
date | Thu, 12 Apr 2012 14:05:59 -0700 |
parents | eeac5e179243 |
children | 9a8363d23419 |
line wrap: on
line source
*** 'a\nc\n\n\n\n' 'a\nb\n\n\n' *** 'a\nb\nc\n' 'a\nc\n' *** '' '' *** 'a\nb\nc' 'a\nb\nc' *** 'a\nb\nc\nd\n' 'a\nd\n' *** 'a\nb\nc\nd\n' 'a\nc\ne\n' *** 'a\nb\nc\n' 'a\nc\n' *** 'a\n' 'c\na\nb\n' *** 'a\n' '' *** 'a\n' 'b\nc\n' *** 'a\n' 'c\na\n' *** '' 'adjfkjdjksdhfksj' *** '' 'ab' *** '' 'abc' *** 'a' 'a' *** 'ab' 'ab' *** 'abc' 'abc' *** 'a\n' 'a\n' *** 'a\nb' 'a\nb' 6 6 'y\n\n' 6 6 'y\n\n' 9 9 'y\n\n' done done