[Bug 4531] New: Populating rbc branch cache is extremely slow (>1 minute)
mercurial-bugs at selenic.com
mercurial-bugs at selenic.com
Fri Feb 6 01:09:16 UTC 2015
http://bz.selenic.com/show_bug.cgi?id=4531
Priority: normal
Bug ID: 4531
CC: bugzilla at selenic.com, mercurial-devel at selenic.com
Assignee: mads at kiilerich.com
Summary: Populating rbc branch cache is extremely slow (>1
minute)
Severity: bug
Classification: Unclassified
OS: Mac OS
Reporter: durham at fb.com
Hardware: PC
Status: UNCONFIRMED
Version: 3.3
Component: Mercurial
Product: Mercurial
The new rbc branch cache (http://selenic.com/hg/rev/cb99bacb9b4e) is extremely
slow to populate on large repositories. On the hg repo it takes 1.5 seconds,
but on a repository with hundreds of thousand commits it takes over a minute.
Additionally, the cache is not being written to disk unless a write operation
happens (like a commit).
This is a major regression and affects all newly cloned repositories when they
do any operation that touches branch information.
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