summaryrefslogtreecommitdiffstats
path: root/lib/libmd
diff options
context:
space:
mode:
authorpeter <peter@FreeBSD.org>2001-03-17 09:31:06 +0000
committerpeter <peter@FreeBSD.org>2001-03-17 09:31:06 +0000
commit670e711dd19510316ecaa1f30d78f16ba66492f6 (patch)
treedf728469695bfff83fcf93f9e9a460606a09b3f1 /lib/libmd
parent400aa0706c1d55d12d0405666ddac2d3e3ec5d69 (diff)
downloadFreeBSD-src-670e711dd19510316ecaa1f30d78f16ba66492f6.zip
FreeBSD-src-670e711dd19510316ecaa1f30d78f16ba66492f6.tar.gz
Use a generic implementation of the Fowler/Noll/Vo hash (FNV hash).
Make the name cache hash as well as the nfsnode hash use it. As a special tweak, create an unsigned version of register_t. This allows us to use a special tweak for the 64 bit versions that significantly speeds up the i386 version (ie: int64 XOR int64 is slower than int64 XOR int32). The code layout is a little strange for the string function, but I was able to get between 5 to 10% improvement over the original version I started with. The layout affects gcc code generation choices and this way was fastest on x86 and alpha. Note that 'CPUTYPE=p3' etc makes a fair difference to this. It is around 45% faster with -march=pentiumpro on a p6 cpu.
Diffstat (limited to 'lib/libmd')
0 files changed, 0 insertions, 0 deletions
OpenPOWER on IntegriCloud