[Seaside] HIGH CPU - not frozen, but s...l....o....w seaside image
adi at netstyle.ch
Thu Mar 22 09:14:53 UTC 2007
note, there is a difference between the printAllStacks() and
printCallStack() which print the Squeak process stack(s) and the
interpreter backtrace. You get the latter in gdb by typing bt.
On Mar 22, 2007, at 09:44 , Florian Minjat wrote:
> That's what I did each times.
> But the first time, with the frozen image without nohup, I didn't
> get anything with gdb more than this :
> (gdb) call printAllStacks()
> $1 = 2
> (gdb) call printCallStack()
> $2 = -1551081468
> With no output.
> I tried with the advice of Adrian to redirect stdout and stderr
> inside gdb (http://developer.apple.com/technotes/tn/tn2032.html),
> but with no success.
> So I killed it and relauched with nohup, and when it froze again I
> got the output I wanted in the nohup.out file.
> But the problem is : why did the headless image froze when it got a
> call to InputSensor>cursorPoint ? There should be a safety in this
> method to answer 0 at 0 when the image is headless for example.
> Another problem is that is worked a little (50-70 calls to
> InputSensor>cursorPoint) and then the image was to slow (100% cpu)
> to do it. So this behavior could be triggered somewhere else in the
> image and is annoying to debug...
> John M McIntosh wrote:
>> You can of course invoke call (int) printAllStacks()
>> that should print all the stacks for all the smalltalk processes,
>> which is great for giving clues.
>> On Mar 21, 2007, at 12:08 PM, <bryce at kampjes.demon.co.uk>
>> <bryce at kampjes.demon.co.uk> wrote:
>>> Florian Minjat writes:
>>>> I didn't manage to get information from my image last time. So I
>>>> killed it and launched it with nohup to be sure I can debug it
>>>> next times.
>>> If you can debug with gdb, get the C backtrace too.
>>> Seaside mailing list
>>> Seaside at lists.squeakfoundation.org
>> John M. McIntosh <johnmci at smalltalkconsulting.com>
>> Corporate Smalltalk Consulting Ltd. http://
> Seaside mailing list
> Seaside at lists.squeakfoundation.org
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