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phases: avoid N² behavior in `advanceboundary` We allowed duplicated entries in the deque, which each entry could potentially insert all its ancestors. So advancing boundary for the full repository would mean each revision would walk all its ancestors, resulting in O(N²) iteration. For repository of any decent size, N² is quickly insane. We introduce a simple set to avoid this and get back to reasonable performance.
author Pierre-Yves David <pierre-yves.david@octobus.net>
date Fri, 15 Mar 2024 01:31:57 +0100
parents a492610a2fc1
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