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<base href="https://bugs.dpdk.org/">
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<body><table border="1" cellspacing="0" cellpadding="8" class="bz_new_table">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_UNCONFIRMED "
title="UNCONFIRMED - rte_hash performs poorly with small key sizes"
href="https://bugs.dpdk.org/show_bug.cgi?id=1775">1775</a>
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</tr>
<tr>
<th>Summary</th>
<td>rte_hash performs poorly with small key sizes
</td>
</tr>
<tr>
<th>Product</th>
<td>DPDK
</td>
</tr>
<tr>
<th>Version</th>
<td>25.07
</td>
</tr>
<tr>
<th>Hardware</th>
<td>All
</td>
</tr>
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<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>UNCONFIRMED
</td>
</tr>
<tr>
<th>Severity</th>
<td>minor
</td>
</tr>
<tr>
<th>Priority</th>
<td>Normal
</td>
</tr>
<tr>
<th>Component</th>
<td>other
</td>
</tr>
<tr>
<th>Assignee</th>
<td>dev@dpdk.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>mattias.ronnblom@ericsson.com
</td>
</tr>
<tr>
<th>Target Milestone</th>
<td>---
</td>
</tr></table>
<p>
<div class="bz_comment_block">
<pre class="bz_comment_text"><rte_hash.h> uses memcmp() to compare key sizes < 16 bytes.
memcmp() is often not a compiler intrinsic (e.g., not on GCC), and thus each
comparison will result in an expensive libc call (both function call overhead
and the byte-scanning required by memcmp).
memcmp() should preferably never be used for a pure boolean comparison.
</pre>
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</p>
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