<p>One last comparison: RPM5 uses BerkeleyDB too, but with different tunables than RPM4.</p>
<p>Here's essentially the same measurement as the previous comment:</p>
<pre><code>1.15user 0.87system 0:02.11elapsed 96%CPU (0avgtext+0avgdata 584900maxresident)k
240inputs+390776outputs (7major+355303minor)pagefaults 0swaps
</code></pre>
<p>I add this comment to squelch BerkeleyDB haters from taking my measurements and claiming</p>
<p><code>"LMDB is Newer! Better! Faster! than BDB."</code></p>
<p>I suspect the tunable that makes a huge difference is mmapsize (RPM5 sets this to 256Mb).</p>

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