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authorDan McGee <dan@archlinux.org>2011-01-22 21:29:02 +0100
committerDan McGee <dan@archlinux.org>2011-01-22 23:34:42 +0100
commit27e8f06e0335ca560a3d0a261cc1979dbc1caad9 (patch)
tree20493b902d45af7c0cb6ec269d21fc3adb70e9af /INSTALL
parent4d291508c2c24d058d0e00ca9588c6c81b24bc92 (diff)
downloadpacman-27e8f06e0335ca560a3d0a261cc1979dbc1caad9.tar.gz
pacman-27e8f06e0335ca560a3d0a261cc1979dbc1caad9.tar.xz
Query fileowner performance improvements
Clean up some of the code by doing less string copying and printing. This is accomplished by either doing it after we know we need it, or taking advantage of the fact that some strings never change such as the root directory prefix. Also, fix an issue where a file at the root level (e.g. /foobar) could not be queried. End result is a much faster user experience when combined with the mbasename() changes. These timings are for looking up 113 files in /etc/, some of which are owned and some which are not. $ find /etc -maxdepth 1 -type f | xargs time pacman -Qo >/dev/null 6.10user 0.05system 0:06.17elapsed 99%CPU (0avgtext+0avgdata 131040maxresident)k 0inputs+0outputs (0major+9436minor)pagefaults 0swaps $ find /etc -maxdepth 1 -type f | xargs time ./src/pacman/.libs/lt-pacman -Qo >/dev/null 0.86user 0.04system 0:00.92elapsed 99%CPU (0avgtext+0avgdata 131120maxresident)k 0inputs+0outputs (0major+9436minor)pagefaults 0swaps I'll take a 600% increase in speed. Signed-off-by: Dan McGee <dan@archlinux.org>
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