Bugs item #1601295, was opened at 2006-11-22 19:13
Message generated for change (Settings changed) made by duncanwebb
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Category: plugins
Group: 1.6.0
>Status: Pending
Resolution: Accepted
Priority: 5
Private: No
Submitted By: Frank Naude (naudefj)
Assigned to: Nobody/Anonymous (nobody)
Summary: 100% CPU when browsing headlines
Initial Comment:
Python is using 100% CPU when I browse through some headlines.
# ps -fp 12429
UID PID PPID C STIME TTY TIME CMD
naudefj 12429 1 83 20:04 pts/2 00:07:26 python
/usr/lib/python2.4/site-packages/freevo/main.py
# strace -p 12429
futex(0x820dc28, FUTEX_WAKE, 1) = 0
futex(0x820dc28, FUTEX_WAKE, 1) = 0
futex(0x820dc28, FUTEX_WAKE, 1) = 0
futex(0x820dc28, FUTEX_WAKE, 1) = 0
futex(0x820dc28, FUTEX_WAKE, 1) = 0
futex(0x820dc28, FUTEX_WAKE, 1) = 0
...
Not sure what it's waiting for. The only solution is to kill and restart freevo.
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Comment By: Duncan Webb (duncanwebb)
Date: 2006-11-26 10:33
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That's a simple patch :-)
Nothing to do with headlines then, but a good spot.
The patch has been applied to rel-1-6 and rel-1.
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Comment By: Frank Naude (naudefj)
Date: 2006-11-26 09:30
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I've traced the problem to drawstringframed() in osd.py. The
"num_lines_left" variable becomes negative and the while-loop is never
terminated. Example:
1) A newline is removed and num_lines_left is decremented from 1 to 0.
2) The variable is the decremented to -1 before the next while-loop
iteration.
3) Stuck in while loop as negative values evaluate to TRUE
Attached is a simple patch.
Just in case you are still interested:
# rpm -q libxml2 python
libxml2-2.6.26-2mdv2007.0
python-2.4.3-3.1mdv2007.0
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Comment By: Duncan Webb (duncanwebb)
Date: 2006-11-25 23:55
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Works perfectly for me.
The only thing that I can think that this could be caused by is a bug in
one of the dependencies.
I'm using:
Python-2.4.3
libxml2-2.6.26
There are is no threading in the headlines module, so I guess that the
problem could be with Python. A quick google on futex shows some problems
with 2.4.x that were solved by using 2.3.4.
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Comment By: Frank Naude (naudefj)
Date: 2006-11-25 22:21
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Looks like a unicode problem. Here is a simplified test feed that can be
used to simulate the problem:
HEADLINES_LOCATIONS = [("FREEVO BUG", "http://www.orafaq.com/freevo.xml";)]
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Comment By: Duncan Webb (duncanwebb)
Date: 2006-11-22 22:33
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Need more information, such as which headlines.
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