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authorDan McGee <dan@archlinux.org>2011-08-29 05:20:41 +0200
committerDan McGee <dan@archlinux.org>2011-08-29 06:49:27 +0200
commitb221af660d101301606e263cef73b358937516a6 (patch)
treee49e89dbd2314e9b2f972c29d14dc0c63a61121a /lib/libalpm/error.c
parent040083b97fab61c8afc16a1c49a8384d097c272a (diff)
downloadpacman-b221af660d101301606e263cef73b358937516a6.tar.gz
pacman-b221af660d101301606e263cef73b358937516a6.tar.xz
Database read optimizations
Hard to believe there was still more room to improve on this, but I found an easily correctable oversight tonight. Our databases (both sync and local) contain many blank lines, and we were not moving onto the next line right away in these cases; instead we would proceed through our strcmp() conditional checks as normal. Some local numbers follow to show the effects of this patch: Sync `-Ss foobarbaz`: 71,709 blank lines skipped early ~1,505,889 strcmp() calls avoided (21 per line) ~15% speed improvement (.210 --> .179 sec) Local `-Qs foobarbaz`: 6,823 blank lines skipped early 115,991 strcmp() calls avoided (17 per line) ~6% speed improvement (.080 -> .071 sec) Signed-off-by: Dan McGee <dan@archlinux.org>
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