Re: modperl Apache keeps freezing up
If I kill and restart the Apache then it's fine but it'll freeze up in a few days again. I'm perplexed. Start the server in -X or wait for it to happen and attach strace to the process. If that doesn't help you could always attach gdb to the process. HTH -- Philip M. Gollucci ([EMAIL PROTECTED]) 323.219.4708 Consultant / http://p6m7g8.net/Resume/resume.shtml Senior Software Engineer - TicketMaster - http://ticketmaster.com 1024D/A79997FA F357 0FDD 2301 6296 690F 6A47 D55A 7172 A799 97F It takes a minute to have a crush on someone, an hour to like someone, and a day to love someone, but it takes a lifetime to forget someone...
Re: modperl Apache keeps freezing up
On Fri, May 05, 2006 at 12:06:24AM -0700, Philip M. Gollucci wrote:
If I kill and restart the Apache then it's fine but it'll freeze up in
a few days again. I'm perplexed.
Start the server in -X or wait for it to happen and
attach strace to the process. If that doesn't help you could always
attach gdb to the process.
It happened again. I tried attaching gdb/strace to the main Apache
process that froze and got some data, but I don't know how to
interpret the results. Does anyone know how to interpret this?
Here's what gdb says:
(gdb) where
#0 0x557c19f8 in select () from /lib/tls/libc.so.6
#1 0x080a85fc in wait_or_timeout ()
#2 0x080aac5e in standalone_main ()
#3 0x080ab3d4 in main ()
And here's what strace says:
select(0, NULL, NULL, NULL, {0, 135000}) = 0 (Timeout)
time(NULL) = 1146842062
waitpid(-1, 0xda1c, WNOHANG)= 0
select(0, NULL, NULL, NULL, {1, 0}) = 0 (Timeout)
time(NULL) = 1146842063
waitpid(-1, 0xda1c, WNOHANG)= 0
select(0, NULL, NULL, NULL, {1, 0}) = 0 (Timeout)
time(NULL) = 1146842064
waitpid(-1, 0xda1c, WNOHANG)= 0
select(0, NULL, NULL, NULL, {1, 0}) = 0 (Timeout)
time(NULL) = 1146842065
(keeps repeating same sequence of calls)
Also here's a gdb of one of the child processes:
(gdb) where
#0 0x556ea67e in __read_nocancel () from /lib/tls/libpthread.so.0
#1 0x556afa4d in PerlIOUnix_read () from /usr/lib/libperl.so.5.8
#2 0x556ae1d2 in Perl_PerlIO_read () from /usr/lib/libperl.so.5.8
#3 0x556b0f6d in PerlIOBuf_fill () from /usr/lib/libperl.so.5.8
#4 0x556ae583 in Perl_PerlIO_fill () from /usr/lib/libperl.so.5.8
#5 0x556af07b in PerlIOBase_read () from /usr/lib/libperl.so.5.8
#6 0x556b0fe9 in PerlIOBuf_read () from /usr/lib/libperl.so.5.8
#7 0x556ae1d2 in Perl_PerlIO_read () from /usr/lib/libperl.so.5.8
#8 0x556b2b93 in PerlIO_getc () from /usr/lib/libperl.so.5.8
#9 0x55657f75 in Perl_sv_gets () from /usr/lib/libperl.so.5.8
#10 0x55648f32 in Perl_do_readline () from /usr/lib/libperl.so.5.8
#11 0x55645920 in Perl_pp_readline () from /usr/lib/libperl.so.5.8
#12 0x55644ce9 in Perl_runops_standard () from /usr/lib/libperl.so.5.8
#13 0x555e7459 in Perl_call_sv () from /usr/lib/libperl.so.5.8
#14 0x555e723d in Perl_call_sv () from /usr/lib/libperl.so.5.8
#15 0x0805b8be in perl_call_handler ()
#16 0x0805ac03 in perl_run_stacked_handlers ()
#17 0x080589e4 in perl_handler ()
#18 0x0809d0b2 in ap_invoke_handler ()
#19 0x080b3aba in process_request_internal ()
#20 0x080b3b17 in ap_process_request ()
#21 0x080aa0d7 in child_main ()
#22 0x080aa368 in make_child ()
---Type return to continue, or q return to quit---
#23 0x080aa6d6 in perform_idle_server_maintenance ()
#24 0x080aad77 in standalone_main ()
#25 0x080ab3d4 in main ()
modperl Apache keeps freezing up
My modperl Apache keeps freezing up every few days. When it freezes up, here's what ps looks like: $ ps ux --width= USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND shoujoai 29179 0.0 0.2 8036 5928 ?Ss May03 0:00 /usr/local/perlhttpd/bin/httpd -f /home/shoujoai/httpd/httpd.conf shoujoai 30337 0.0 0.9 21344 18728 ? SMay03 0:02 /usr/local/perlhttpd/bin/httpd -f /home/shoujoai/httpd/httpd.conf shoujoai 14289 0.0 1.0 23708 21156 ? SMay03 0:36 /usr/local/perlhttpd/bin/httpd -f /home/shoujoai/httpd/httpd.conf shoujoai 14366 0.0 0.9 22168 19584 ? SMay03 0:25 /usr/local/perlhttpd/bin/httpd -f /home/shoujoai/httpd/httpd.conf shoujoai 17662 0.0 0.9 21656 19132 ? SMay03 0:19 /usr/local/perlhttpd/bin/httpd -f /home/shoujoai/httpd/httpd.conf shoujoai 26427 0.0 0.9 21364 18836 ? SMay03 0:06 /usr/local/perlhttpd/bin/httpd -f /home/shoujoai/httpd/httpd.conf When I try to telnet to it, it goes like this: $ telnet localhost 8002 Trying 127.0.0.1... then it hangs for a few minutes before this: Connected to localhost.localdomain. Escape character is '^]'. Then if I try to do an HTTP request: GET /server-status HTTP/1.1 Host: www.shoujoai.com it'll hang for another few minutes and then it just does: Connection closed by foreign host. Any ideas what's going on? The access_log showed normal traffic patterns up until the time it froze then it just stops: 206.57.89.207 - - [03/May/2006:23:44:04 -0500] GET /forum/board_show.pl?bid=12 HTTP/1.0 200 15098 http://www.shoujoai.com/forum/forum_show.pl; Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.10) Gecko/20050716 Firefox/1.0.6 (ax) 68.107.121.19 - - [03/May/2006:23:44:04 -0500] GET /forum/board_show.pl?bid=7;pg=2 HTTP/1.0 200 15752 http://www.shoujoai.com/forum/board_show.pl?bid=7; Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.12) Gecko/20050915 Firefox/1.0.7 70.244.35.23 - - [03/May/2006:23:44:05 -0500] GET /forum/forum_search.pl HTTP/1.0 200 6525 http://www.shoujoai.com/forum/board_show.pl?bid=12; Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; YPC 3.0.3; .NET CLR 1.1.4322) If I kill and restart the Apache then it's fine but it'll freeze up in a few days again. I'm perplexed.
