Mercurial > hg
view tests/test-hup.t @ 16363:2cdd7e63211b
parsers: incrementally parse the revlog index in C
We only parse entries in a revlog index file when they are actually
needed, and cache them when first requested.
This makes a huge difference to performance on large revlogs when
accessing the tip revision or performing a handful of numeric lookups
(very common cases). For instance, "hg --time tip --template {node}"
on a tree with 300,000 revs takes 0.15 before, 0.02 after.
Even for revlog-intensive operations (e.g. running "hg log" to
completion), the lazy approach is about 1% faster than the eager
parse_index2.
author | Bryan O'Sullivan <bryano@fb.com> |
---|---|
date | Thu, 05 Apr 2012 13:00:35 -0700 |
parents | fb765286f2f9 |
children | f64b25f147d7 |
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Test hangup signal in the middle of transaction $ "$TESTDIR/hghave" serve fifo || exit 80 $ hg init $ mkfifo p $ hg serve --stdio < p 1>out 2>&1 & $ P=$! Do test while holding fifo open $ ( > echo lock > echo addchangegroup > while [ ! -s .hg/store/journal ]; do true; done > kill -HUP $P > ) > p $ wait $ cat out 0 0 adding changesets transaction abort! rollback completed killed! $ echo .hg/* .hg/store/* .hg/00changelog.i .hg/journal.bookmarks .hg/journal.branch .hg/journal.desc .hg/journal.dirstate .hg/requires .hg/store .hg/store/00changelog.i .hg/store/00changelog.i.a .hg/store/journal.phaseroots