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Date: Sun, 23 Sep 2012 21:27:52 +0530
From: Dhiru Kholia <>
Subject: O3 vs O2


Using O3 results in a huge performance boost for OpenVMS format.

✗ ../run/john -fo:openvms -t # with O3
Benchmarking: OpenVMS Purdy [32/64]... DONE
Raw:	1186K c/s real, 1186K c/s virtual

✗ ../run/john -fo:openvms -t # with O2
Benchmarking: OpenVMS Purdy [32/64]... DONE
Raw:	753030 c/s real, 753030 c/s virtual

Are there any known formats where using O3 results in lower performance?


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