[bug #14729] Check out or update time for certain files is very long

[anonymous]

URL:
  <http://savannah.nongnu.org/bugs/?func=detailitem&item_id=14729>

                 Summary: Check out or update time for certain files is very
long
                 Project: Concurrent Versions System
            Submitted by: None
            Submitted on: Thu 10/06/05 at 00:12
                Category: None
                Severity: 3 - Normal
              Item Group: None
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
                 Release: 
           Fixed Release: None
   Fixed Feature Release: None

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Details:

I am a member of a project that uses CVS for tracking a large software
project.  Recently, we encoutered a problem where version 1.2 of a file which
had its head version of 1.5 was very slow to extract.  We are running 1.12.9
-- the debian stable release.

I tried various other versions of CVS (1.11.17, 1.11.21, 1.12.11, 1.12.12)
and they all exhibited the same behavior.  The case that caused a problem was
the file had 300K lines and 200K fragments (separate add/del ops).  This
causes the on the order of 2 minutes per file to perform an update.  I have
isolated the problem to the rcs code that looks like it is at least order n^2
(actually n*m where n is the # of lines and m is the number of fragments).






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