Hi, Michael Meeks points a very inefficient read loop in fontconfig. Should be easy to fix... Would have been easier in fact if fontconfig was mmapping the cache file right away... --behdad http://behdad.org/ "Commandment Three says Do Not Kill, Amendment Two says Blood Will Spill" -- Dan Bern, "New American Language" ---------- Forwarded message ---------- Date: Mon, 6 Feb 2006 05:45:50 -0500 From: michael meeks <michael.meeks@xxxxxxxxxx> To: performance-list@xxxxxxxxx Cc: Rodrigo Moya <rodrigo@xxxxxxxxxx> Subject: icon theme weight query ... Hi guys, Just running gnome-screenshot-applet and seeing some rather nasty performance problems (some of which are most likely related to some fontconfig grief we've been suffering recently)[1] Michael. [snip] [1] - I though only OO.o did things as stupid as this: 8844 stat64("/home/michael/.fonts.cache-2", {st_mode=S_IFREG|0600, st_size=217089, ...}) = 0 8844 open("/home/michael/.fonts.cache-2", O_RDONLY) = 23 8844 read(23, "G", 1) = 1 8844 read(23, "L", 1) = 1 8844 read(23, "O", 1) = 1 8844 read(23, "B", 1) = 1 8844 read(23, "A", 1) = 1 8844 read(23, "L", 1) = 1 8844 read(23, "\0", 1) = 1 8844 lseek(23, 0, SEEK_SET) = 0 8844 read(23, "G", 1) = 1 8844 read(23, "L", 1) = 1 8844 read(23, "O", 1) = 1 8844 read(23, "B", 1) = 1 8844 read(23, "A", 1) = 1 8844 read(23, "L", 1) = 1 8844 read(23, "\0", 1) = 1 8844 lseek(23, 0, SEEK_CUR) = 7 8844 lseek(23, 7, SEEK_SET) = 7 8844 read(23, " ", 1) = 1 8844 read(23, " ", 1) = 1 8844 read(23, " ", 1) = 1 8844 read(23, "3", 1) = 1 8844 read(23, "4", 1) = 1 8844 read(23, "f", 1) = 1 8844 read(23, "f", 1) = 1 8844 read(23, "9", 1) = 1 8844 read(23, " ", 1) = 1 8844 read(23, "7", 1) = 1 8844 read(23, "8", 1) = 1 8844 read(23, "5", 1) = 1 8844 read(23, "6", 1) = 1 8844 read(23, "3", 1) = 1 8844 read(23, "4", 1) = 1 8844 read(23, "1", 1) = 1 8844 read(23, "2", 1) = 1 8844 read(23, " ", 1) = 1 8844 read(23, " ", 1) = 1 8844 read(23, " ", 1) = 1 8844 read(23, " ", 1) = 1 8844 read(23, "1", 1) = 1 .... -- michael.meeks@xxxxxxxxxx <><, Pseudo Engineer, itinerant idiot _______________________________________________ Performance-list mailing list Performance-list@xxxxxxxxx http://mail.gnome.org/mailman/listinfo/performance-list _______________________________________________ Fontconfig mailing list Fontconfig@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/fontconfig
