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<title>OPENSSL_LH_stats</title>
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<ul id="index">
  <li><a href="#NAME">NAME</a></li>
  <li><a href="#SYNOPSIS">SYNOPSIS</a></li>
  <li><a href="#DESCRIPTION">DESCRIPTION</a></li>
  <li><a href="#RETURN-VALUES">RETURN VALUES</a></li>
  <li><a href="#NOTE">NOTE</a></li>
  <li><a href="#SEE-ALSO">SEE ALSO</a></li>
  <li><a href="#COPYRIGHT">COPYRIGHT</a></li>
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<h1 id="NAME">NAME</h1>

<p>OPENSSL_LH_stats, OPENSSL_LH_node_stats, OPENSSL_LH_node_usage_stats, OPENSSL_LH_stats_bio, OPENSSL_LH_node_stats_bio, OPENSSL_LH_node_usage_stats_bio - LHASH statistics</p>

<h1 id="SYNOPSIS">SYNOPSIS</h1>

<pre><code> #include &lt;openssl/lhash.h&gt;

 void OPENSSL_LH_stats(LHASH *table, FILE *out);
 void OPENSSL_LH_node_stats(LHASH *table, FILE *out);
 void OPENSSL_LH_node_usage_stats(LHASH *table, FILE *out);

 void OPENSSL_LH_stats_bio(LHASH *table, BIO *out);
 void OPENSSL_LH_node_stats_bio(LHASH *table, BIO *out);
 void OPENSSL_LH_node_usage_stats_bio(LHASH *table, BIO *out);</code></pre>

<h1 id="DESCRIPTION">DESCRIPTION</h1>

<p>The <b>LHASH</b> structure records statistics about most aspects of accessing the hash table.</p>

<p>OPENSSL_LH_stats() prints out statistics on the size of the hash table, how many entries are in it, and the number and result of calls to the routines in this library.</p>

<p>OPENSSL_LH_node_stats() prints the number of entries for each &#39;bucket&#39; in the hash table.</p>

<p>OPENSSL_LH_node_usage_stats() prints out a short summary of the state of the hash table. It prints the &#39;load&#39; and the &#39;actual load&#39;. The load is the average number of data items per &#39;bucket&#39; in the hash table. The &#39;actual load&#39; is the average number of items per &#39;bucket&#39;, but only for buckets which contain entries. So the &#39;actual load&#39; is the average number of searches that will need to find an item in the hash table, while the &#39;load&#39; is the average number that will be done to record a miss.</p>

<p>OPENSSL_LH_stats_bio(), OPENSSL_LH_node_stats_bio() and OPENSSL_LH_node_usage_stats_bio() are the same as the above, except that the output goes to a <b>BIO</b>.</p>

<h1 id="RETURN-VALUES">RETURN VALUES</h1>

<p>These functions do not return values.</p>

<h1 id="NOTE">NOTE</h1>

<p>These calls should be made under a read lock. Refer to <a href="../man3/OPENSSL_LH_COMPFUNC.html">&quot;NOTE&quot; in OPENSSL_LH_COMPFUNC(3)</a> for more details about the locks required when using the LHASH data structure.</p>

<h1 id="SEE-ALSO">SEE ALSO</h1>

<p><a href="../man7/bio.html">bio(7)</a>, <a href="../man3/OPENSSL_LH_COMPFUNC.html">OPENSSL_LH_COMPFUNC(3)</a></p>

<h1 id="COPYRIGHT">COPYRIGHT</h1>

<p>Copyright 2000-2017 The OpenSSL Project Authors. All Rights Reserved.</p>

<p>Licensed under the OpenSSL license (the &quot;License&quot;). You may not use this file except in compliance with the License. You can obtain a copy in the file LICENSE in the source distribution or at <a href="https://www.openssl.org/source/license.html">https://www.openssl.org/source/license.html</a>.</p>


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