Package: zopfli Version: 1.0.2-1 Severity: normal Tags: patch --- Please enter the report below this line. --- Hi, Following this blog (http://roartindon.blogspot.fr/2016/04/boosting-zopfli-performance.html), I change the flags of the Makefile for the following:
CFLAGS = -W -Wall -Wextra -ansi -pedantic -lm -O3 -Wno-unused-function -flto CXXFLAGS = -W -Wall -Wextra -ansi -pedantic -O3 -flto I simply change -O2 to -O3 and added -ftlo. The result I got on my Core2 E8400 (old processor): Before: Optimizing /home/adrien/spirale.png Input size: 550707 (537K) Result size: 318669 (311K). Percentage of original: 57.865% Result is smaller 222.00user 0.25system 3:50.99elapsed 96%CPU (0avgtext+0avgdata 72084maxresident)k 0inputs+0outputs (0major+14759minor)pagefaults 0swaps After: Optimizing /home/adrien/spirale.png Input size: 550707 (537K) Result size: 318669 (311K). Percentage of original: 57.865% Result is smaller 190.20user 0.08system 3:11.17elapsed 99%CPU (0avgtext+0avgdata 71924maxresident)k 0inputs+0outputs (0major+32645minor)pagefaults 0swaps I would have reported upstream, but it seems that no one listens to this (https://github.com/google/zopfli/issues/104). --- System information. --- Architecture: Kernel: Linux 4.16.0-1-amd64 Debian Release: buster/sid 500 unstable ftp.fr.debian.org 500 testing download.jitsi.org 1 experimental ftp.fr.debian.org --- Package information. --- Depends (Version) | Installed =========================-+-=========== libc6 (>= 2.14) | 2.27-3 libgcc1 (>= 1:3.0) | 1:8.1.0-3 libstdc++6 (>= 5.2) | 8.1.0-3 Package's Recommends field is empty. Package's Suggests field is empty.
