Just wanted to add a note to this. I installed the long lost children patch yesterday and since then I haven't seen this problem.
Regards, Hannes On 25 January 2011 17:49, Hannes Landeholm <[email protected]> wrote: > To fix this I suggest changing the line in peruser.c:2111 > > ret = apr_poll(pollset, num_listensocks, &n, 1000000); > > so it gets a time out of 1000000 (one second). And below it do a check > if the main process is still running. If not, quit. > > Hannes > > > On 25 January 2011 16:56, Hannes Landeholm <[email protected]> wrote: > > Oh yeah, and it's even worse since my automatic watchdog script > > doesn't even know apache doesn't work anymore since it sees alive > > httpd processes running and think everything is hunky dory. > > > > Hannes > > > > On 25 January 2011 16:55, Hannes Landeholm <[email protected]> wrote: > >> Hi, > >> > >> I see a whole bunch of loose children that are stopped and refuse to > >> exit even though their parent process has died a long long time ago. > >> This has happened multiple times. I think it happens when the parent > >> exits ungracefully like when it's crashed. Can you add a check that > >> terminates child processes when the parent is killed? This is > >> exceptionally annoying when multiplexers do this since they block > >> apache from restarting as they block the listen port. Since not even > >> automatic watchdog scripts can bring back apache to life when that > >> happens I'd say this is a critical/major bug. > >> > >> Here's a backtrace for one of the borked kids: > >> > >> #0 0x00007f04fd20ef58 in *__GI___poll (fds=0x7fffe4e50740, nfds=2, > >> timeout=<value optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:83 > >> #1 0x00007f04fdd3c230 in apr_poll (aprset=0x1c44670, num=2, > >> nsds=0x7fffe4e508c8, timeout=-1) at poll/unix/poll.c:120 > >> #2 0x000000000046c0da in child_main (child_num_arg=<value optimized > >> out>) at peruser.c:2111 > >> #3 0x000000000046cfe9 in make_child (s=0xd34b38, slot=14) at > peruser.c:2534 > >> ... > >> > >> It's also proably related to the earlier mutex warning/critical child > error. > >> > >> Hannes > >> > > >
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