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Viewing changes to libdb/docs/ref/am_conf/h_nelem.html

  • Committer: Bazaar Package Importer
  • Author(s): Didier Roche
  • Date: 2010-05-17 17:02:06 UTC
  • mfrom: (1.1.79 upstream) (1.6.12 experimental)
  • Revision ID: james.westby@ubuntu.com-20100517170206-4ufr52vwrhh26yh0
Tags: 2.30.1-1ubuntu1
https://launchpad.net/bugs/42199
https://launchpad.net/bugs/229669
https://launchpad.net/bugs/173703
https://launchpad.net/bugs/360344
https://launchpad.net/bugs/508494
* Merge from debian experimental. Remaining change:
  (LP: #42199, #229669, #173703, #360344, #508494)
  + debian/control:
    - add Vcs-Bzr tag
    - don't use libgnome
    - Use Breaks instead of Conflicts against evolution 2.25 and earlier.
  + debian/evolution-data-server.install,
    debian/patches/45_libcamel_providers_version.patch:
    - use the upstream versioning, not a Debian-specific one 
  + debian/libedata-book1.2-dev.install, debian/libebackend-1.2-dev.install,
    debian/libcamel1.2-dev.install, debian/libedataserverui1.2-dev.install:
    - install html documentation
  + debian/rules:
    - don't build documentation it's shipped with the tarball

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libdb/docs/ref/am_conf/h_nelem.html
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<!--$Id$-->
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<!--Copyright 1997-2002 by Sleepycat Software, Inc.-->
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<!--All rights reserved.-->
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<!--See the file LICENSE for redistribution information.-->
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<html>
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<head>
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<title>Berkeley DB Reference Guide: Hash table size</title>
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<meta name="description" content="Berkeley DB: An embedded database programmatic toolkit.">
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<meta name="keywords" content="embedded,database,programmatic,toolkit,b+tree,btree,hash,hashing,transaction,transactions,locking,logging,access method,access methods,java,C,C++">
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</head>
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<body bgcolor=white>
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<a name="2"><!--meow--></a>
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<table width="100%"><tr valign=top>
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<td><h3><dl><dt>Berkeley DB Reference Guide:<dd>Access Methods</dl></h3></td>
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<td align=right><a href="../../ref/am_conf/h_hash.html"><img src="../../images/prev.gif" alt="Prev"></a><a href="../../reftoc.html"><img src="../../images/ref.gif" alt="Ref"></a><a href="../../ref/am_conf/recno.html"><img src="../../images/next.gif" alt="Next"></a>
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</td></tr></table>
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<p>
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<h1 align=center>Hash table size</h1>
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<p>When setting up the hash database, knowing the expected number of elements
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that will be stored in the hash table is useful.  This value can be used
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by the Hash access method implementation to more accurately construct the
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necessary number of buckets that the database will eventually require.
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<p>The anticipated number of elements in the hash table can be specified by
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calling the <a href="../../api_c/db_set_h_nelem.html">DB-&gt;set_h_nelem</a> method.  If not specified, or set too low,
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hash tables will expand gracefully as keys are entered, although a slight
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performance degradation may be noticed.  In order for the estimated number
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of elements to be a useful value to Berkeley DB, the <a href="../../api_c/db_set_h_ffactor.html">DB-&gt;set_h_ffactor</a> method
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must also be called to set the page fill factor.
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<table width="100%"><tr><td><br></td><td align=right><a href="../../ref/am_conf/h_hash.html"><img src="../../images/prev.gif" alt="Prev"></a><a href="../../reftoc.html"><img src="../../images/ref.gif" alt="Ref"></a><a href="../../ref/am_conf/recno.html"><img src="../../images/next.gif" alt="Next"></a>
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</td></tr></table>
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<p><font size=1><a href="http://www.sleepycat.com">Copyright Sleepycat Software</a></font>
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</body>
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</html>