Re: huge apache+mod_perl processes

If you don't have an unbounded growth issue it is likely do to some
library pulling in alot of dependencies or the creation/caching in
memory of some large data structure.  You can preload all the
offending libraries and see if that causes a jump in the initial
memory allocation for you apache procs.  If not you can create a
Handler that fires during cleanup/log phase to capture memory size
right after each access.

2010/9/29 Eugene Toropov <[email protected]>:
> Greetings,
>
> We have a problem with huge Apache+mod_perl2 processes of 150-200 Mb in
> size. After apache restart they are usually 40-50 Mb in size, then in a
> minute grow up to 100-150 Mb and then some time later may grow up to 200 Mb.
> I suspect a certain type of http queries and would like to know if there are
> any manuals/howtos/tools to investiagate such cases.
>
> # perl -v
> This is perl, v5.10.1 (*) built for x86_64-linux
> # strings /usr/local/apache2/modules/mod_perl.so | grep mod_perl\/
> mod_perl/2.0.4
> # /usr/local/apache2/bin/httpd -v
> Server version: Apache/2.2.14 (Unix)
>
> # pmap -x 8320
> 8320:   /usr/local/apache2/bin/httpd -DSSL
> Address           Kbytes     RSS   Dirty Mode   Mapping
> 0000000000400000     584     496       0 r-x--  httpd
> 0000000000692000      24      20      20 rw---  httpd
> 0000000000698000      12       8       8 rw---    [ anon ]
> 0000000017c10000  147640  144612  144608 rw---    [ anon ]
> ....
> ----------------  ------  ------  ------
> total kB          352380  156560  151324
>
> # /usr/local/apache2/bin/httpd -l
> Compiled in modules:
>   core.c
>   mod_authn_file.c
>   mod_authn_default.c
>   mod_authz_host.c
>   mod_authz_groupfile.c
>   mod_authz_user.c
>   mod_authz_default.c
>   mod_auth_basic.c
>   mod_include.c
>   mod_filter.c
>   mod_log_config.c
>   mod_env.c
>   mod_setenvif.c
>   mod_version.c
>   prefork.c
>   http_core.c
>   mod_mime.c
>   mod_status.c
>   mod_autoindex.c
>   mod_asis.c
>   mod_cgi.c
>   mod_negotiation.c
>   mod_dir.c
>   mod_actions.c
>   mod_userdir.c
>   mod_alias.c
>   mod_rewrite.c
>   mod_so.c
> #
> Cheers
> Eugene