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From: Patrick May <pjm@spe.com>
To: info-gnus-english@gnu.org
Subject: Slow header download on one group
Date: Mon, 19 Nov 2007 10:17:17 -0500	[thread overview]
Message-ID: <m2bq9qe03m.fsf@spe.com> (raw)

     I see especially slow header downloads when accessing one
particular newsgroup.  Even if that group shows only a dozen unread
posts, it loads much more slowly than a groups with over a hundred.

     elp shows the following for the fast groups:

Function Name                                                                 Call Count  Elapsed Time  Average Time
============================================================================  ==========  ============  ============
gnus-retrieve-headers                                                         3           5.690393      1.8967976666
gnus-group-read-group                                                         1           3.42949       3.42949
gnus-summary-read-group                                                       1           3.429393      3.429393
gnus-summary-read-group-1                                                     1           3.429363      3.429363
gnus-select-newsgroup                                                         1           2.889938      2.889938
gnus-fetch-headers                                                            1           2.650536      2.650536
gnus-cache-retrieve-headers                                                   1           2.638718      2.638718
gnus-agent-retrieve-headers                                                   1           2.637814      2.637814

The slow group shows:

Function Name                                           Call Count  Elapsed Time  Average Time
======================================================  ==========  ============  ============
gnus-retrieve-headers                                   3           78.807254     26.269084666
gnus-group-read-group                                   1           47.025916     47.025916
gnus-summary-read-group                                 1           47.02571      47.02571
gnus-summary-read-group-1                               1           47.025689     47.025689
gnus-select-newsgroup                                   1           42.567341     42.567341
gnus-fetch-headers                                      1           40.455486     40.455486
gnus-cache-retrieve-headers                             1           39.304998     39.304998
gnus-agent-retrieve-headers                             1           39.304134     39.304134

Could fragmentation in .newsrc.eld be the source of the problem?

Thanks,

Patrick

------------------------------------------------------------------------
S P Engineering, Inc.  | Large scale, mission-critical, distributed OO
                       | systems design and implementation.
          pjm@spe.com  | (C++, Java, Common Lisp, Jini, middleware, SOA)

             reply	other threads:[~2007-11-19 15:17 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-11-19 15:17 Patrick May [this message]
2007-11-20  0:50 ` Katsumi Yamaoka
2007-11-20 14:53   ` Patrick May

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