annotate .hgsigs @ 13259:3b616dfa4b17

revlog: do revlog node->rev mapping by scanning Now that the nodemap is lazily created, we use linear scanning back from tip for typical node to rev mapping. Given that nodemap creation is O(n log n) and revisions searched for are usually very close to tip, this is often a significant performance win for a small number of searches. When we do end up building a nodemap for bulk lookups, the scanning function is replaced with a hash lookup.
author Matt Mackall <mpm@selenic.com>
date Tue, 11 Jan 2011 21:52:03 -0600
parents 5d1bb1174047
children c10e168cbee2
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