https://jira.whamcloud.com This file is an XML representation of an issue en-us 9.4.14 940014 05-12-2023 https://jira.whamcloud.com/browse/LU-1339 Lustre <p>implement CRC32 checksumming acceleration using PCLMULQDQ instruction</p> LU-1339

CRC32 checksumming acceleration using PCLMULQDQ instruction

Improvement Major Resolved Fixed WC Triage Alexander Boyko Fri, 20 Apr 2012 07:29:27 +0000 Tue, 20 Nov 2012 13:23:10 +0000 Wed, 25 Jul 2012 10:55:13 +0000 Lustre 2.3.0 0 1 <p>Gerrit request <a href="http://review.whamcloud.com/2586" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/2586</a><br/> Debug info of crypto hash self performance test for pcmulqdq implementation:</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>Crypto hash algorithm adler32 speed = 2124 MB/s Crypto hash algorithm crc32 speed = 2057 MB/s ..... Crypto hash algorithm crc32c speed = 2203 MB/s </pre> </div></div> <p>Alexander, can you fix the build error reported in Gerrit</p> <p>I noticed in the i686 build log the following #warning introduced by this patch:</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>libcfs/libcfs/crc32-pclmul_asm.S:164:2: warning: #warning Using 32bit code support </pre> </div></div> <p>However, we normally build with -Werror, so this should introduce a build error. Please submit a patch to remove this #warning line, while we figure out why -Werror is not catching this problem.</p> <p>Maybe AS don`t use -Werror option.</p> <p><a href="http://review.whamcloud.com/3354" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/3354</a></p> <p>Landed for 2.3</p> <p>Xyratex <a href="http://jira-nss.xy01.xyratex.com:8080/browse/MRP-314" class="external-link" target="_blank" rel="nofollow noopener">MRP-314</a></p> Development Rank 1|hzv6af: Rank (Obsolete) 4553