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azammitdcarf
2010-01-14 07:45:37 +00:00
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include/limesurvey/classes/adodb/docs/docs-perf.htm
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@@ -18,7 +18,7 @@ font-size: 8pt;
</head>
<body>
<h3>The ADOdb Performance Monitoring Library</h3>
<p>V4.94 23 Jan 2007 (c) 2000-2007 John Lim (jlim#natsoft.com.my)</p>
<p>V5.06 16 Oct 2008 (c) 2000-2009 John Lim (jlim#natsoft.com)</p>
<p><font size="1">This software is dual licensed using BSD-Style and
LGPL. This means you can use it in compiled proprietary and commercial
products.</font></p>
@@ -229,7 +229,7 @@ need to echo or print the output of this function,</p>
<p>Returns database health check parameters formatted for a command
line interface. You will need to echo or print the output of this
function. Sample output for mysql:</p>
<pre>-- Ratios -- <br> MyISAM cache hit ratio =&gt; 56.5635738832 <br> InnoDB cache hit ratio =&gt; 0 <br> sql cache hit ratio =&gt; 0 <br> -- IO -- <br> data reads =&gt; 2622 <br> data writes =&gt; 2415.5 <br> -- Data Cache -- <br> MyISAM data cache size =&gt; 512K <br> BDB data cache size =&gt; 8388600<br> InnoDB data cache size =&gt; 8M<br> -- Memory Pools -- <br> read buffer size =&gt; 131072 <br> sort buffer size =&gt; 65528 <br> table cache =&gt; 4 <br> -- Connections -- <br> current connections =&gt; 3<br> max connections =&gt; 100</pre>
<pre>-- Ratios -- <br> MyISAM cache hit ratio =gt; 56.5635738832 <br> InnoDB cache hit ratio =gt; 0 <br> sql cache hit ratio =gt; 0 <br> -- IO -- <br> data reads =gt; 2622 <br> data writes =gt; 2415.5 <br> -- Data Cache -- <br> MyISAM data cache size =gt; 512K <br> BDB data cache size =gt; 8388600<br> InnoDB data cache size =gt; 8M<br> -- Memory Pools -- <br> read buffer size =gt; 131072 <br> sort buffer size =gt; 65528 <br> table cache =gt; 4 <br> -- Connections -- <br> current connections =gt; 3<br> max connections =gt; 100</pre>
<p><font face="Courier New, Courier, mono">function <b>Poll</b>($pollSecs=5)
</font> </p>
<p> Run in infinite loop, displaying the following information every
@@ -298,6 +298,9 @@ $this-&gt;DBParameter("data cache size").</p>
<p>Returns the CPU load of the database client (NOT THE SERVER) as a
percentage. Only works for Linux and Windows. For Windows, WMI must be
available.</p>
<h3>$ADODB_PERF_MIN</h3>
<p>New in adodb 4.97/5.03 is this global variable, which controls whether sql timings which are too small are not saved. Currently it defaults
to 0.05 (seconds). This means that all sql's which are faster than 0.05 seconds to execute are not saved.
<h3>Format of $settings Property</h3>
<p> To create new database parameters, you need to understand
$settings. The $settings data structure is an associative array. Each
@@ -334,7 +337,7 @@ will invoke $this-&gt;GetIndexDescription($val). This is useful for
generating tuning suggestions. For an example, see WarnCacheRatio().</li>
</ol>
<p>Example from MySQL, table_cache database parameter:</p>
<pre>'table cache' =&gt; array('CACHE', # category code<br> array("show variables", 'table_cache'), # array (type 1b)<br> 'Number of tables to keep open'), # description</pre>
<pre>'table cache' =gt; array('CACHE', # category code<br> array("show variables", 'table_cache'), # array (type 1b)<br> 'Number of tables to keep open'), # description</pre>
<h3>Example Health Check Output</h3>
<p><a href="#db2">db2</a> <a href="#informix">informix</a> <a
href="#mysql">mysql</a> <a href="#mssql">mssql</a> <a href="#oci8">oci8</a>