mirror of https://github.com/BOINC/boinc.git
95 lines
2.6 KiB
PHP
95 lines
2.6 KiB
PHP
<?php
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require_once("docutil.php");
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page_head("Statistics data");
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echo "
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<b>Statistics data</b> is the number of
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<a href=credit.php>Cobblestones</a> (credit units)
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granted to hosts, participants and teams by the
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various BOINC projects.
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This can be used for various purposes, such as:
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<ul>
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<li>
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Web sites that show statistics and leaderboards
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for one or more BOINC projects.
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Examples are listed at <a href=stats_sites.php>here</a>.
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<li> Dynamically-generated images
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(typically used as message-board signatures)
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that show user and/or team credit, possible across projects.
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Examples are listed at <a href=stats_sites.php>here</a>.
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<li> Displays of current credit on cell phones and PDAs. </ul>
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<p>
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BOINC provides a flexible architecture for distributing
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statistics data, with the goal of enabling new display applications.
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<hr>
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<center>
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<img src=stats.png>
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<br
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<b>The BOINC statistics data architecture</b></center>
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<hr>
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<h2>Project-specific data</h2>
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<p>
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Each BOINC project provides data in two forms:
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<ul>
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<li> As
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<a href=db_dump.php>a set of downloadable files</a>
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(in a compressed XML format)
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that contain the project's complete current statistics.
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These files are typically updated once every 24 hours.
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<li> As
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<a href=web_rpc.php>a set of Web RPCs</a>
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that return an XML-format description of a given
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participant's credit,
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based on that participant's database ID.
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</ul>
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<p>
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Applications should access these data sources
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as infrequently as possible,
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to avoid imposing unnecessary load on project servers.
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For example, a Web RPCs to get a particular participant's data
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should made at most once per hour.
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<h2>Aggregate data</h2>
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<p>
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A <b>data aggregator</b> is a service that collects XML files
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from several projects,
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and computes the totals for participants and hosts
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(based on <a href=cpid.php>cross-project IDs</a>)
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across these projects.
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This aggregate data is then exported in two ways:
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<ul>
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<li> As
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<a href=stats_xml.php>a set of downloadable files</a>
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(in a compressed XML format).
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An example is at http://boinc.netsoft-online.com/stats/.
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<li> As
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<a href=stats_xml.php#rpc>a set of Web RPCs</a>
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that return an XML-format description of a given participant
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or host's credit,
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based on the cross-project ID.
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Example:
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http://boinc.netsoft-online.com/get_host.php?cpid=????
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and
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http://boinc.netsoft-online.com/get_host_tot.php?cpid=????
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</ul>
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<p>
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<p>
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Application developers are encouraged to concentrate
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on aggregate rather than per-project data.
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This will encourage participants to join multiple projects,
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and will make it possible for new projects to quickly get
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many participants.
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";
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page_tail();
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?>
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