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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 42473] - Apache2 problem with MaxClient and/or TimeOut
Date Tue, 22 May 2007 08:10:14 GMT
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http://issues.apache.org/bugzilla/show_bug.cgi?id=42473





------- Additional Comments From borja.pacheco@juntadeandalucia.es  2007-05-22 01:10 -------
Debug info...

#ps -ef | grep apache
root      5224     1  0 May20 ?        00:00:02 /usr/sbin/apache2 -k start -DSSL
Debian-   5171  5224  0 May21 ?        00:00:00 /usr/sbin/apache2 -k start -DSSL
Debian-   5183  5224  0 May21 ?        00:00:01 /usr/sbin/apache2 -k start -DSSL

// ***************************************************
// PSTACK
// ***************************************************
It's seems that there aren't symbols into binaries included into Debian package,
so, there's no inof here, isn't there?

#pstack  5224        

5224: /usr/sbin/apache2 -k start -DSSL
(No symbols found)
0x4042b9f8: ???? (f4240, 0, bffff118, 1, 80b00a8, c)
0x08084598: ???? (bffff118, bffff11c, bffff120, 80b00a8, 80b4b78, 809c495) + 40
0x08077042: ???? (80b00a8, 80e6180, 80b4b78, 80b4b78, bffff194, 403651a8) + 40
0x0807da8d: ???? (4, bffff234, bffff248, 0, 4048bf40, 40016540) + 40
0x4036f974: ???? (807d3c0, 4, bffff234, 80948e0, 8094940, 4000c380) + 40000dd8

# pstack 5183

5183: /usr/sbin/apache2 -k start -DSSL
(No symbols found)
0x40424ca1: ???? (8225c8c, 824dae4, bfffa048, 40726945, 8235574, 40883dc1) + 80
0x406713eb: ???? (408cc3f0, 824dae4, bfffa0b4, bfffa0b8, 824dae4, 82a95ec) + 10
0x4066d656: ???? (82a95ec, 20, a, bfffa100, 0, bfffa104) + 30
0x4066ebe0: ???? (408c8274, 8c)
0x40670660: ???? (0, 824db1c, 0, 0, 4, bfffa14c) + 2a0
0x407331c0: ???? (824d9e8, 0, 0, 4071a600, 0, 0) + bf0
0x40732f25: ???? (824da4c, 8, 2d, bfffb808, 4, 0) + 8e0
0x40734614: ???? (821634c, 8, 2b, bfffca88, 4, 0) + 1260
0x40734614: ???? (8227c94, 2, 408d03e0, 827e990, 1, bfffcbc4) + 10
0x40722db1: ???? (8, 0, 3, 0, bfffedc0, 0) + 2120
0x406f4ebf: ???? (bfffedc0, 820ed10, 40737c30, 80606c8, 0, bfffebf8) + 1b0
0x4073834f: ???? (820c5b0, 80b5868, 0, 820c5b0, 820c5b0, 8128cb0)
0x08078375: ???? (820c5b0, 3b, 81e792c, 820c5b0, 0, 81e78e8) + 20
0x08078980: ???? (820c5b0, 0, 4, 820c5b0, 81e78e8, 820c5b0)
0x08069c6a: ???? (820c5b0, 4, 820c5b0, 808370c, 81e78e8, 81e7810) + 10
0x0806512d: ???? (81e78e8, 81e7810, 2, 81e5890, 81e78e8, 8206560)
0x080835c5: ???? (81e78e8, 81e7810, 81e7810, 18, 81e5848, 8206560) + 30
0x08076974: ???? (18, 1, 1, 0, 1, 816f120) + 10
0x08076ac7: ???? (80b4b78, 18, 40399c4, 40016ed8, 805957d, bffff074) + c0
0x08076d59: ???? (80b00a8, bffff11c, bffff120, 80b00a8, 80b4b78, 809c495) + 40
0x08077445: ???? (80b00a8, 80e6180, 80b4b78, 80b4b78, bffff194, 403651a8) + 40
0x0807da8d: ???? (4, bffff234, bffff248, 0, 4048bf40, 40016540) + 40
0x4036f974: ???? (807d3c0, 4, bffff234, 80948e0, 8094940, 4000c380) + 40000dd8


// ***************************************************
// STRACE
// ***************************************************
The process outputs these calls, and it doesn't change when I try making a
connection to the httpd process

# strace -p  5224        
Process 5224 attached - interrupt to quit
select(0, NULL, NULL, NULL, {0, 920000}) = 0 (Timeout)
waitpid(-1, 0xbffff090, WNOHANG|WUNTRACED) = 0
select(0, NULL, NULL, NULL, {1, 0})     = 0 (Timeout)
waitpid(-1, 0xbffff090, WNOHANG|WUNTRACED) = 0
select(0, NULL, NULL, NULL, {1, 0})     = 0 (Timeout)
waitpid(-1, 0xbffff090, WNOHANG|WUNTRACED) = 0
select(0, NULL, NULL, NULL, {1, 0})     = 0 (Timeout)
waitpid(-1, 0xbffff090, WNOHANG|WUNTRACED) = 0
select(0, NULL, NULL, NULL, {1, 0})     = 0 (Timeout)
waitpid(-1, 0xbffff090, WNOHANG|WUNTRACED) = 0
select(0, NULL, NULL, NULL, {1, 0} <unfinished ...>
Process 5224 detached

Child seems to be more interesting. It looks like locked...
# strace -p 5183          
Process 5183 attached - interrupt to quit
flock(27, LOCK_EX

Must I perform any other debug command?

Thanks in advance.

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