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From "Maurer, Hermann" <Hermann.Mau...@gft.com>
Subject [users@httpd] Apache + Subversion use too much memory
Date Wed, 11 Jul 2007 08:56:55 GMT
Hi folks,

I've been watching a strange behaviour of my subversion server.
Sometimes the apache processes use almost all virtual memory. I think,
that the problem is caused by some ldap or subversion module's issue,
because I see a lot of open connections to our ldap server (Active
Directory), which the users authenticate themselfs against. Has anybody
from you have a problem like this and solved it ? Any help would be very
appreciated.

My configuration is as following:

Hardware:
DELL PE 2950 
Intel(R) Xeon(R) CPU 5130  @ 2.00GHz
1 Gbyte RAM + 2 Gbyte Swap

Software:
SuSE Linux 10.2 (i386)
prefork Apache/2.0.59 (Unix) DAV/2 mod_ssl/2.0.59 OpenSSL/0.9.8d
SVN/1.4.3 mod_bw/0.8
OpenLDAP Libs 2.3.27

top shows the following:

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND

12002 wwwrun    21   0  782m 334m 3020 S    0 33.0   4:37.08 httpd

12221 wwwrun    23   0  655m 327m 2972 S    0 32.4   6:38.63 httpd

30282 wwwrun    15   0  450m 4808 2944 S    0  0.5   2:28.12 httpd

11013 wwwrun    16   0  391m 9808 3028 S    0  0.9   2:26.50 httpd

21926 root      17   0  105m  736  520 S    0  0.1   0:03.27 nscd

15917 wwwrun    25   0  102m  78m 2972 S    0  7.8   0:21.79 httpd

10920 wwwrun    15   0 47172 4908 2976 S    0  0.5   1:27.72 httpd

12157 wwwrun    15   0 41468 4744 2908 S    0  0.5   0:15.23 httpd

15789 wwwrun    15   0 36032  22m 2996 S    0  2.2   0:06.06 httpd


netstat -tpn shows this:

Active Internet connections (w/o servers)
Proto Recv-Q Send-Q Local Address           Foreign Address
State       PID/Program name   
tcp        1      0 192.168.1.2:39784       192.168.1.99:389
CLOSE_WAIT  30282/httpd         
tcp        1      0 192.168.1.2:39783       192.168.1.99:389
CLOSE_WAIT  12221/httpd         
tcp        1      0 192.168.1.2:39782       192.168.1.99:389
CLOSE_WAIT  30282/httpd         
tcp        1      0 192.168.1.2:40600       192.168.1.99:389
CLOSE_WAIT  15917/httpd         
tcp        1      0 192.168.1.2:40598       192.168.1.99:389
CLOSE_WAIT  30282/httpd         
tcp        1      0 192.168.1.2:47659       192.168.1.99:389
CLOSE_WAIT  12002/httpd         
tcp        1      0 192.168.1.2:47657       192.168.1.99:389
CLOSE_WAIT  15917/httpd         
tcp        1      0 192.168.1.2:41262       192.168.1.99:389
CLOSE_WAIT  12002/httpd         
tcp        0      0 192.168.1.2:41221       192.168.1.99:389
ESTABLISHED 12002/httpd         
tcp        0      0 192.168.1.2:41220       192.168.1.99:389
ESTABLISHED 11013/httpd         
tcp        0      0 192.168.1.2:41222       192.168.1.99:389
ESTABLISHED 12157/httpd         
tcp        0      0 192.168.1.2:41224       192.168.1.99:389
ESTABLISHED 11013/httpd         
tcp        1      0 192.168.1.2:44541       192.168.1.99:389
CLOSE_WAIT  11013/httpd         
tcp        1      0 192.168.1.2:44542       192.168.1.99:389
CLOSE_WAIT  10920/httpd         
tcp        1      0 192.168.1.2:44060       192.168.1.99:389
CLOSE_WAIT  12157/httpd         
tcp        1      0 192.168.1.2:44648       192.168.1.99:389
CLOSE_WAIT  12157/httpd         
tcp        1      0 192.168.1.2:57201       192.168.1.99:389
CLOSE_WAIT  15789/httpd         
tcp        1      0 192.168.1.2:58676       192.168.1.99:389
CLOSE_WAIT  10920/httpd         
tcp        1      0 192.168.1.2:59512       192.168.1.99:389
CLOSE_WAIT  15789/httpd         
tcp        1      0 192.168.1.2:59514       192.168.1.99:389
CLOSE_WAIT  12221/httpd         
tcp        1      0 192.168.1.2:59515       192.168.1.99:389
CLOSE_WAIT  10920/httpd  
tcp        0   8303 192.168.1.2:443         192.168.2.11:1620
ESTABLISHED 15917/httpd       

In the apache logfiles I cannot see any suspicious lines but some
authentication errors (wrong username or password). 

thank you very much !

Kind Regards,
Hermann Maurer

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