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<base href="https://bugs.freedesktop.org/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - code from git is slow compared 2.11"
href="https://bugs.freedesktop.org/show_bug.cgi?id=94427">94427</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>code from git is slow compared 2.11
</td>
</tr>
<tr>
<th>Product</th>
<td>fontconfig
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Component</th>
<td>library
</td>
</tr>
<tr>
<th>Assignee</th>
<td>fontconfig-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>kokoko3k@gmail.com
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>freedesktop@behdad.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=122139" name="attach_122139" title="grep ^stat64 /tmp/out_fast|grep font >/tmp/stat_fast.txt">attachment 122139</a> <a href="attachment.cgi?id=122139&action=edit" title="grep ^stat64 /tmp/out_fast|grep font >/tmp/stat_fast.txt">[details]</a></span>
grep ^stat64 /tmp/out_fast|grep font >/tmp/stat_fast.txt
On a not so powerfull ATOM 330 running at 2ghz, i've noticed that even the
simplest gui application using qt4 or gtk2 toolkits (didn't test other) suffers
from a high delay when starting up.
On this particular machine, i measured it to be around one second.
The following script /tmp/startuptime.sh
measures the application startup time of the program "gtk-demo"
#---------------------------------------------------------------------
#!/bin/bash
ln -s /usr/bin/sleep /tmp/mysleep &>/dev/null
time /tmp/mysleep 999 &
gtk-demo &
while true ; do
wmctrl -l|grep 'GTK+ Code Demos' &>/tmp/out
if [ $? -eq 0 ] ; then
killall mysleep &>/tmp/out
break
fi
sleep 0.05
done
killall gtk-demo &>/tmp/out
unlink /tmp/mysleep
#---------------------------------------------------------------------
Test startup time with fontconfig and freetype from git:
#---------------------------------------------------------------------
$ /tmp/startuptime.sh
/tmp/startuptime.sh: riga 3: 4321 Terminato /tmp/mysleep 999
real 0m1.149s
user 0m0.000s
sys 0m0.000s
#---------------------------------------------------------------------
Now with standard fontconfig and freetype:
#---------------------------------------------------------------------
$ /tmp/startuptime.sh
/tmp/startuptime.sh: riga 3: 4508 Terminato /tmp/mysleep 999
real 0m0.325s
user 0m0.000s
sys 0m0.000s
#---------------------------------------------------------------------
If i isolate just use fontconfig from git, and freetype stable:
#---------------------------------------------------------------------
$ pacman -Q|grep 'fontconfig\|freetype2'
fontconfig 2.11.1-2
freetype2-infinality-ultimate 2.6.2-4
$ /tmp/startuptime.sh
/tmp/startuptime.sh: riga 3: 5692 Terminato /tmp/mysleep 999
real 0m0.386s
user 0m0.000s
sys 0m0.000s
#---------------------------------------------------------------------
So it seems fontconfig is doing a lot of work with the ultimate patches.
This happens with regular user account, never-used user accounts and the root
account too.
I've already tried to rebuild the font cache with fc-cache -f and ran it with
root and regular user, without success...
i used strace to debug the issue (strace -f gtk-demo)
and created two files: out_slow and out_fast:
$ grep ^stat64 /tmp/out_slow|grep font|wc -l
4600
$ grep ^stat64 /tmp/out_fast|grep font|wc -l
47
In out_slow, you see, it seems to walk across all of the fonts and more:
grep ^stat64 /tmp/out_fast|grep font >/tmp/stat_fast.txt
<a href="http://pastebin.com/vBLXakzT">http://pastebin.com/vBLXakzT</a>
grep ^stat64 /tmp/out_slow|grep font >/tmp/stat_slow.txt
<a href="http://pastebin.com/f8KGrFGr">http://pastebin.com/f8KGrFGr</a>
complete strace fast
<a href="http://pastebin.com/60RsQpy2">http://pastebin.com/60RsQpy2</a>
complete strace slow (had to split these because they were too big)
<a href="http://pastebin.com/fbXDFN2B">http://pastebin.com/fbXDFN2B</a>
<a href="http://pastebin.com/We6SxwN0">http://pastebin.com/We6SxwN0</a>
I cant undesrtand if this is a bug or just the expected behaviour.</pre>
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