On Tue, 15 Oct 2013 21:10:34 +0200, Chris Adams wrote: > Do you really run "gnome-open --help" 1000 times per reasonable unit of > time (or ever)? Please stop using bogus comparisons and highly > contrived tests. They do nothing to help your argument. The goal of this example was to show that in a special case of shell script prelink does bring very significant performance improvements. Real world cases would have expectedly lower but still valid improvement. I have tested a possibly real world script: rm *;sync;(time for i in `seq 0 89`;do mplayer &>/dev/null -nosound -vo png -ss $i -endpos 0 video.mp4;mv 00000001.png $i.png;done) 2>&1|grep ^real|tee -a /tmp/times without prelink: 6.220s 6.212s 6.218s 7.463s 6.277s 6.216s 6.203s 6.255s 6.209s 6.205s with prelink: 6.560s 6.496s 6.501s 6.530s 6.583s 6.616s 6.511s 6.498s 6.489s 6.915s I do not think these numbers need too deep statistical analysis. -=without prelink +=with prelink runtime linker statistics: - total startup time in dynamic loader: 28010379 clock cycles + total startup time in dynamic loader: 34141440 clock cycles - time needed for relocation: 19069899 clock cycles (68.0%) + time needed for relocation: 25601766 clock cycles (74.9%) - number of relative relocations: 73592 + number of relative relocations: 0 - time needed to load objects: 8138088 clock cycles (29.0%) + time needed to load objects: 7724814 clock cycles (22.6%) >From some looking at it I do not understand now what happens there. It should be debugged and fixed. Jan -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct
