<p></p>
<p>I tried to migrate and update to a different server, but the read/write performance has went drastically down even though it should have went up.</p>
<p><strong>Old Setup</strong>: Ubuntu 16, AWS with 32gb ram, 4 threads, 2.5ghz, EBS SSD, postgresql 9.5<br>
Loads the bbox in 18 seconds: /api/0.6/map?bbox=-97.58167,35.385,-97.51833,35.44833</p>
<p><strong>New Setup:</strong> Ubuntu 20, 128gb ram, 128 threads, 3.8ghz, m.2 500k IOPS read/write, postgresql 12<br>
Loads the bbox in 144 seconds</p>
<p>Postgresql config is the same, but shared_buffers was changed from 10GB to 90GB.</p>
<p>The production server fetches the bbox in 2.5 seconds.</p>
<p>Any idea what could be causing the performance issue?</p>

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