Date: Tue, 08 Feb 2005 00:08:27 -0800 From: Nate Lawson <nate@root.org> To: cvs-src@freebsd.org, cvs-all@freebsd.org, src-committers@freebsd.org Subject: Re: cvs commit: src/sys/fs/msdosfs msdosfs_conv.c Message-ID: <4208737B.7080909@root.org> In-Reply-To: <20050208075117.E19CC16A557@hub.freebsd.org> References: <20050208075117.E19CC16A557@hub.freebsd.org>
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Nate Lawson wrote: > njl 2005-02-08 07:51:14 UTC > > FreeBSD src repository > > Modified files: > sys/fs/msdosfs msdosfs_conv.c > Log: > Unroll the loop for calculating the 8.3 filename checksum. In testing > on my P3, microbenchmarks show the unrolled version is 78x faster. In > actual use (recursive ls), this gives an average of 9% improvement in > system time and 2% improvement in wall time. > > Revision Changes Path > 1.39 +14 -5 src/sys/fs/msdosfs/msdosfs_conv.c I also tested this version in usermode on some candidate strings to be sure its output matches the original version. The mbnambuf functions are my next victim. -- Nate
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