On Fri, Dec 01, 2006 at 10:13:55AM +0100, Bernardo Innocenti wrote: > While I welcome reducing the number of dupe packages, I'm > worried by the impact of this change on the size and > performance of many core programs. It shouldn't be that bad. > libncurses is much bigger than libtermcap, and also has > oddly large .bss and .data sections: > > bender:/[1/0]# size /lib64/libncurses.so.5 /lib64/libtermcap.so.2 > text data bss dec hex filename > 319006 56608 3592 379206 5c946 /lib64/libncurses.so.5 > 10483 788 112 11383 2c77 /lib64/libtermcap.so.2 > > this is going to impact very negatively on the RSS of several > critical programs such as bash and python. $ ps -o rss,comm RSS COMMAND 1428 bash_termcap 1480 bash_curses Not sure it proves anything. > I'm also worried that the overall time required spent for a > fork may increase considerably. Note that termcap has everything in one big file. A simple program doing just tgetent() and tgetstr() is significantly faster with ncurses. $ time ( a=0;while [ $a -lt 1000 ]; do a=$[$a + 1] && ./testtermcap < /dev/null &> /dev/null; done ) real 0m2.078s user 0m1.137s sys 0m0.936s $ time ( a=0;while [ $a -lt 1000 ]; do a=$[$a + 1] && ./testncurses < /dev/null &> /dev/null; done ) real 0m1.464s user 0m0.496s sys 0m0.962s -- Miroslav Lichvar -- fedora-devel-list mailing list fedora-devel-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-devel-list
