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branches/samba-3.0/docs/htmldocs/manpages/vfs_cacheprime.8.html
r44 r134 1 <html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>vfs_cacheprime</title><link rel="stylesheet" href=" samba.css" type="text/css"><meta name="generator" content="DocBook XSL Stylesheets V1.71.0"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="refentry" lang="en"><a name="vfs_cacheprime.8"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>vfs_cacheprime — prime the kernel file data cache</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="cmdsynopsis"><p><code class="literal">vfs objects = cacheprime</code></p></div></div><div class="refsect1" lang="en"><a name="id291819"></a><h2>DESCRIPTION</h2><p>This VFS module is part of the2 <a href="samba.7.html"><span class="citerefentry"><span class="refentrytitle">samba</span>(7)</span></a> suite.</p><p>The <code class="literal">vfs_cacheprime</code> VFS module reads chunks1 <html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>vfs_cacheprime</title><link rel="stylesheet" href=""></a><h2>DESCRIPTION</h2><p>This VFS module is part of the 2 <a href="samba.7.html"><span class="citerefentry"><span class="refentrytitle">samba</span>(7)</span></a> suite.</p><p>The <code class="literal">vfs_cacheprime</code> VFS module reads chunks 3 3 of file data near the range requested by clients in order to 4 4 make sure the data is present in the kernel file data cache at … … 8 8 on boundaries that are a multiple of this size. Each range of 9 9 the file data is primed at most once during the time the client 10 has the file open. </p><p>This module is stackable.</p></div><div class="refsect1" lang="en"><a name="id2 59549"></a><h2>OPTIONS</h2><div class="variablelist"><dl><dt><span class="term">cacheprime:rsize = BYTES</span></dt><dd><p>The number of bytes with which to prime11 the kernel data cache.</p><p>The following suffixes may be applied to BYTES:</p><div class="itemizedlist"><ul type="disc"><li><p><code class="literal">K</code> - BYTES is a number of kilobytes</p></li><li><p><code class="literal">M</code> - BYTES is a number of megabytes</p></li><li><p><code class="literal">G</code> - BYTES is a number of gigabytes</p></li></ul></div></dd></dl></div></div><div class="refsect1" lang="en"><a name="id2 59606"></a><h2>EXAMPLES</h2><p>For a hypothetical disk array, it is necessary to ensure10 has the file open. </p><p>This module is stackable.</p></div><div class="refsect1" lang="en"><a name="id2"></a><h2>OPTIONS</h2><div class="variablelist"><dl><dt><span class="term">cacheprime:rsize = BYTES</span></dt><dd><p>The number of bytes with which to prime 11 the kernel data cache.</p><p>The following suffixes may be applied to BYTES:</p><div class="itemizedlist"><ul type="disc"><li><p><code class="literal">K</code> - BYTES is a number of kilobytes</p></li><li><p><code class="literal">M</code> - BYTES is a number of megabytes</p></li><li><p><code class="literal">G</code> - BYTES is a number of gigabytes</p></li></ul></div></dd></dl></div></div><div class="refsect1" lang="en"><a name="id2"></a><h2>EXAMPLES</h2><p>For a hypothetical disk array, it is necessary to ensure 12 12 that all read operations are of size 1 megabyte (1048576 bytes), 13 13 and aligned on 1 megabyte boundaries: 14 14 </p><pre class="programlisting"> 15 15 <em class="parameter"><code>[hypothetical]</code></em> 16 <a class=" indexterm" name="id259376"></a>vfs objects = cacheprime17 <a class=" indexterm" name="id259384"></a>cacheprime:rsize = 1M18 </pre></div><div class="refsect1" lang="en"><a name="id2 59393"></a><h2>CAVEATS</h2><p><code class="literal">cacheprime</code> is not a a substitute for16 <a class=" 17 <a class=" 18 </pre></div><div class="refsect1" lang="en"><a name="id2"></a><h2>CAVEATS</h2><p><code class="literal">cacheprime</code> is not a a substitute for 19 19 a general-purpose readahead mechanism. It is intended for use 20 20 only in very specific environments where disk operations must 21 21 be aligned and sized to known values (as much as that is possible). 22 </p></div><div class="refsect1" lang="en"><a name="id2 59409"></a><h2>VERSION</h2><p>This man page is correct for version 3.0.25 of the Samba suite.23 </p></div><div class="refsect1" lang="en"><a name="id2 59419"></a><h2>AUTHOR</h2><p>The original Samba software and related utilities22 </p></div><div class="refsect1" lang="en"><a name="id2"></a><h2>VERSION</h2><p>This man page is correct for version 3.0.25 of the Samba suite. 23 </p></div><div class="refsect1" lang="en"><a name="id2"></a><h2>AUTHOR</h2><p>The original Samba software and related utilities 24 24 were created by Andrew Tridgell. Samba is now developed 25 25 by the Samba Team as an Open Source project similar
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