Re: Catching processes stuck in an apparent loop

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Re^2: Catching processes stuck in an apparent loop by powerhouse (Friar) on Jan 17, 2008 at 10:21 UTC
Not using mod_perl, just using Perl v5.8.8 Also using Apache::Session::MySql So when I view 'top' from SSH I see something like this when I notice a bunch of hangs: 26034 holytea 18 0 13544 10m 2096 S 16 0.5 0:00.49 web.cgi # Added these to show what it looks like when there are issues: 26034 holytea 18 0 13544 10m 2096 S 16 0.5 0:00.49 web.cgi 26034 holytea 18 0 13544 10m 2096 S 16 0.5 0:00.49 web.cgi 26034 holytea 18 0 13544 10m 2096 S 16 0.5 0:00.49 web.cgi 26034 holytea 18 0 13544 10m 2096 S 16 0.5 0:00.49 web.cgi 26034 holytea 18 0 13544 10m 2096 S 16 0.5 0:00.49 web.cgi 26034 holytea 18 0 13544 10m 2096 S 16 0.5 0:00.49 web.cgi 26034 holytea 18 0 13544 10m 2096 S 16 0.5 0:00.49 web.cgi 26034 holytea 18 0 13544 10m 2096 S 16 0.5 0:00.49 web.cgi #There are a bunch in here like that, of course all have their own pid +, I also see a bunch of httpd processes. 10099 nobody 15 0 158m 17m 4640 S 3 0.9 33:22.20 httpd + 26001 root 15 0 2172 1036 792 R 1 0.0 0:00.16 top + 1 root 15 0 2044 596 512 S 0 0.0 0:04.62 init + 2 root RT 0 0 0 0 S 0 0.0 0:09.06 migration +/0 3 root 36 19 0 0 0 S 0 0.0 0:00.21 ksoftirqd +/0 4 root RT 0 0 0 0 S 0 0.0 0:00.00 watchdog/ +0 5 root RT 0 0 0 0 S 0 0.0 0:08.04 migration +/1 6 root 34 19 0 0 0 S 0 0.0 0:00.39 ksoftirqd +/1 7 root RT 0 0 0 0 S 0 0.0 0:00.00 watchdog/ +1 8 root RT 0 0 0 0 S 0 0.0 0:10.65 migration +/2 9 root 34 19 0 0 0 S 0 0.0 0:00.17 ksoftirqd +/2 10 root RT 0 0 0 0 S 0 0.0 0:00.00 watchdog/ +2 11 root RT 0 0 0 0 S 0 0.0 0:07.09 migration +/3 12 root 35 19 0 0 0 S 0 0.0 0:00.24 ksoftirqd +/3 13 root RT 0 0 0 0 S 0 0.0 0:00.00 watchdog/ +3 14 root 10 -5 0 0 0 S 0 0.0 0:00.31 events/0 [download] So what I need is for web.cgi and index.cgi to be monitored so that if they run too long they are automatically 'killed'. I know a kill daemon would be the way to go, but I have no idea how to go about it. I've been looking for a few weeks but cannot find anything definative. thx, Richard	[reply] [d/l]
Re^3: Catching processes stuck in an apparent loop by Ultra (Hermit) on Jan 17, 2008 at 14:34 UTC
I think the right question is: why do those processes "hang", which is in fact "don't stop" :) Dodge This!	[reply]
Re^4: Catching processes stuck in an apparent loop by aquarium (Curate) on Jan 18, 2008 at 00:45 UTC
that's exactly what i was trying to point out: first try to fix the problem at the source; rather than working on a cludge/fix before understanding the nature of the problem. many a program work perfectly and only start showing symptoms of a problem when usage ramps up in a production environment. the hardest line to type correctly is: stty erase ^H	[reply]