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Apache Memory Leak?

bbristow

By bbristow
in Apache HTTP Server

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bbristow Newbie

bbristow

Posted
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Well, I hope someone can point me in the right direction on this one.  I have been running my web server a few years and have started to pay better attention to the log files and what the server is trying to tell me.  However, I am a bit stumped on this one.  My server is a P4 3.2 Hyper threaded machine running FreeBSD.  The machine has anywhere from 10-100 active web clients at a time and normally serves up about 1-2 gigs of web traffic a day.  The machine had 1 gig of ram in it and I noticed that the usage of ram was at 100% so I increased it to 2 gigs and within 20 minutes, the usage was back at 100%.  Does apache have a memory leak?  I am running apache version 1.3.33.  Below are some of my server info and log files.

Here is the results of TOP:
last pid: 94636;  load averages:  0.07,  0.12,  0.14                                                                                                                                            up 0+21:45:24  17:58:38
148 processes: 1 running, 146 sleeping, 1 zombie
CPU states: 10.9% user,  0.0% nice,  3.9% system,  0.4% interrupt, 84.8% idle
Mem: 1483M Active, 166M Inact, 257M Wired, 96M Cache, 199M Buf, 8376K Free
Swap: 1992M Total, 54M Used, 1938M Free, 2% Inuse

  PID USERNAME  PRI NICE  SIZE    RES STATE  C  TIME  WCPU    CPU COMMAND
88963 www        2  0 23572K 17132K sbwait 0  0:01  1.86%  1.86% httpd
44913 www        2  0 41560K 35100K accept 0  0:15  1.46%  1.46% httpd
2454 www        2  0 23364K 16712K accept 0  1:22  1.17%  1.17% httpd
46977 www        2  0 25728K 19248K sbwait 0  0:04  0.83%  0.83% httpd
46985 www        2  0 25216K 18744K sbwait 0  0:11  0.78%  0.78% httpd
60011 www        2  0 23408K 16920K sbwait 0  0:02  0.63%  0.63% httpd
48715 root        2  0 36492K 30712K select 0  0:10  0.10%  0.10% suidperl
94568 qscand    -6  0  5480K  4956K piperd 0  0:00  0.27%  0.10% perl5.8.6
94534 root      28  0  2096K  1204K CPU0  0  0:00  0.10%  0.05% top
  175 mysql      2  0 51988K 17764K poll  0 356:09  0.00%  0.00% mysqld
  856 root        2  0  2104K  860K select 0  3:09  0.00%  0.00% top
  212 qscand      2  0 28164K 25196K poll  0  1:26  0.00%  0.00% clamd
3191 root        2  0 39280K 31604K select 0  1:14  0.00%  0.00% suidperl
42968 www        2  0 40716K 34236K accept 0  0:30  0.00%  0.00% httpd
40549 www        2  0 40100K 33628K accept 0  0:26  0.00%  0.00% httpd
46982 www        2  0 33764K 27288K accept 0  0:23  0.00%  0.00% httpd
  132 root        2  0  884K  312K poll  0  0:22  0.00%  0.00% supervise
64141 www        2  0 46296K 39844K accept 0  0:21  0.00%  0.00% httpd
40546 www        2  0 34828K 28348K accept 0  0:21  0.00%  0.00% httpd
40550 www        2  0 35148K 28668K accept 0  0:21  0.00%  0.00% httpd
46716 www        2  0 38320K 31848K accept 0  0:19  0.00%  0.00% httpd
30078 www        2  0 24668K 18048K sbwait 0  0:16  0.00%  0.00% httpd
46730 www        2  0 42388K 35924K accept 0  0:14  0.00%  0.00% httpd
46736 www        2  0 35452K 29000K accept 0  0:14  0.00%  0.00% httpd
46733 www        2  0 43116K 36664K accept 0  0:13  0.00%  0.00% httpd
46975 www        2  0 38644K 32168K accept 0  0:13  0.00%  0.00% httpd
46978 www        2  0 32972K 26496K accept 0  0:13  0.00%  0.00% httpd
64135 www        2  0 31728K 25228K accept 0  0:11  0.00%  0.00% httpd
44883 www        2  0 31068K 24592K accept 0  0:10  0.00%  0.00% httpd
  354 root        2  0 26668K 15456K select 0  0:10  0.00%  0.00% suidperl
46329 www        2  0 33580K 26916K sbwait 0  0:10  0.00%  0.00% httpd
46033 www        2  0 33452K 26976K accept 0  0:10  0.00%  0.00% httpd
46951 www        2  0 32092K 25592K accept 0  0:10  0.00%  0.00% httpd
44897 www        2  0 35428K 28932K accept 0  0:08  0.00%  0.00% httpd
46984 www        2  0 29768K 23276K accept 0  0:07  0.00%  0.00% httpd
46715 www        2  0 31116K 24652K accept 0  0:07  0.00%  0.00% httpd
59996 www        2  0 33420K 26964K accept 0  0:07  0.00%  0.00% httpd
58779 www        2  0 29832K 23352K accept 0  0:07  0.00%  0.00% httpd
46726 www        2  0 23404K 16920K accept 0  0:07  0.00%  0.00% httpd
58773 www        2  0 32476K 26004K accept 0  0:07  0.00%  0.00% httpd
58751 www        2  0 23476K 16964K accept 0  0:07  0.00%  0.00% httpd
46725 www        2  0 23288K 16796K sbwait 0  0:06  0.00%  0.00% httpd
46731 www        2  0 31624K 25144K sbwait 0  0:06  0.00%  0.00% httpd
  124 root      -6  0  872K  200K piperd 0  0:06  0.00%  0.00% readproctit
  139 qmails      2  0  984K  468K select 0  0:06  0.00%  0.00% qmail-send
  138 vpopmail    2  0  928K  436K accept 0  0:06  0.00%  0.00% tcpserver
46737 www        2  0 27760K 21296K accept 0  0:06  0.00%  0.00% httpd
64137 www        2  0 33812K 27344K accept 0  0:06  0.00%  0.00% httpd
46958 www        2  0 23332K 16880K accept 0  0:05  0.00%  0.00% httpd
  135 qmaill    -6  0  904K  352K piperd 0  0:04  0.00%  0.00% multilog
46321 www        2  0 24244K 17708K accept 0  0:04  0.00%  0.00% httpd
46976 www        2  0 27224K 20740K accept 0  0:04  0.00%  0.00% httpd
40531 www        2  0 30000K 23548K accept 0  0:04  0.00%  0.00% httpd
46734 www        2  0 23616K 17084K accept 0  0:04  0.00%  0.00% httpd
  143 vpopmail    2  0 38508K 18172K poll  0  0:03  0.00%  0.00% python
46959 www        2  0 23328K 16840K accept 0  0:03  0.00%  0.00% httpd
  266 root        2  0 10032K  3336K select 0  0:03  0.00%  0.00% httpd
46328 www        2  0 23452K 16952K accept 0  0:03  0.00%  0.00% httpd
40547 www        2  0 24276K 17776K accept 0  0:03  0.00%  0.00% httpd
46708 www        2  0 23324K 16832K accept 0  0:02  0.00%  0.00% httpd
64126 www        2  0 25848K 19348K accept 0  0:02  0.00%  0.00% httpd
46732 www        2  0 23248K 16748K accept 0  0:02  0.00%  0.00% httpd
  133 qmaill    -6  0  904K  352K piperd 0  0:02  0.00%  0.00% multilog
46983 www        2  0 23156K 16668K accept 0  0:02  0.00%  0.00% httpd
64136 www        2  0 23296K 16804K accept 0  0:02  0.00%  0.00% httpd


and here is the apache log:
[Tue Jan 30 06:32:06 2007] [info] server seems busy, (you may need to increase StartServers, or Min/MaxSpareServers), spawning 8 children, there are 14 idle, and 71 total children
[Tue Jan 30 06:32:07 2007] [info] server seems busy, (you may need to increase StartServers, or Min/MaxSpareServers), spawning 16 children, there are 22 idle, and 79 total children
[Tue Jan 30 07:57:09 2007] [info] server seems busy, (you may need to increase StartServers, or Min/MaxSpareServers), spawning 8 children, there are 30 idle, and 74 total children
httpd in malloc(): warning: recursive call
FATAL:  emalloc():  Unable to allocate 0 bytes
[Tue Jan 30 08:53:23 2007] [info] server seems busy, (you may need to increase StartServers, or Min/MaxSpareServers), spawning 8 children, there are 26 idle, and 79 total children
[Tue Jan 30 09:28:28 2007] [info] server seems busy, (you may need to increase StartServers, or Min/MaxSpareServers), spawning 8 children, there are 16 idle, and 75 total children
[Tue Jan 30 09:28:29 2007] [info] server seems busy, (you may need to increase StartServers, or Min/MaxSpareServers), spawning 16 children, there are 24 idle, and 83 total children
[Tue Jan 30 12:10:51 2007] [info] server seems busy, (you may need to increase StartServers, or Min/MaxSpareServers), spawning 8 children, there are 14 idle, and 74 total children
[Tue Jan 30 12:10:52 2007] [info] server seems busy, (you may need to increase StartServers, or Min/MaxSpareServers), spawning 16 children, there are 21 idle, and 82 total children
[Tue Jan 30 14:54:37 2007] [info] server seems busy, (you may need to increase StartServers, or Min/MaxSpareServers), spawning 8 children, there are 26 idle, and 67 total children
[Tue Jan 30 15:14:59 2007] [info] server seems busy, (you may need to increase StartServers, or Min/MaxSpareServers), spawning 8 children, there are 30 idle, and 50 total children
[Tue Jan 30 15:15:40 2007] [info] server seems busy, (you may need to increase StartServers, or Min/MaxSpareServers), spawning 8 children, there are 17 idle, and 63 total children
[Tue Jan 30 15:15:41 2007] [info] server seems busy, (you may need to increase StartServers, or Min/MaxSpareServers), spawning 16 children, there are 24 idle, and 71 total children
[Tue Jan 30 16:14:19 2007] [info] server seems busy, (you may need to increase StartServers, or Min/MaxSpareServers), spawning 8 children, there are 29 idle, and 63 total children

In my Apache config:
MinSpareServers 32
MaxSpareServers 64
StartServers 32

Any ideas or recommendations?

Thanks for your help!

-Bobby
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effigy Member

effigy

Posted
Posted
I've only used Apache 2+ and I haven't experienced this, but here are some ideas:

- Google.
- Read through [url=http://httpd.apache.org/docs/1.3/misc/perf-tuning.html]Apache Performance Tuning[/url].
- What is your KeepAliveTimeout?
- What is your MaxRequestsPerChild?
- What programming languages/applications are you using with Apache? ...What are they doing? Basic stuff?
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bbristow Newbie

bbristow

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I just changed my Max Clients down to 36 from 512?  Is this a good or bad idea?

Here are some of my other settings:

MaxRequestsPerChild 500
KeepAliveTimeout 10
I am using php and cgi.  The most advanced php think that I run is Gallery.  I have about 6 different galleries on my server

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steviewdr Member

steviewdr

Posted
Posted
Re. Max clients - Im not really sure. 36 should be sufficient.

If you running gallery - its not the number of clients that would slow it down - its the database connections.

Just yesterday - I realised/found the "Performance" tab in gallery - caches the photos and pages which saves a LOAD of load on the server. I highly recommend it.

-steve
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