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 j...@aaanet.ru: 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 0040 584 496 0 r-x-- httpd 00692000 24 20 20 rw--- httpd 00698000 12 8 8 rw--- [ anon ] 17c1 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
Re: Secure web
This is very big question. You should research perl best practices for development. You should also research secure programming techniques. On Sun, Oct 3, 2010 at 4:36 PM, adi.yat...@gmail.com wrote: Hai, I am new to mod_perl. I want to build secure web based applications (not https), I mean secure agains hacker. What is the options if I want to build it with mod_perl? Sorry for my bad english. Regards from Indonesien, Adi Sent from my BlackBerry® powered by Sinyal Kuat INDOSAT
Re: huge apache+mod_perl processes
Also, if you are using something like Cache::FastMmap, your processes will look quite large depending on the size of your cache, but this memory is shared between children so it is not that big a deal. From the docs: - Because Cache::FastMmap mmap's a shared file into your processes memory space, this can make each process look quite large, even though it's just mmap'd memory that's shared between all processes that use the cache, and may even be swapped out if the cache is getting low usage. - Not sure if you are using this module, but it could explain your process size jumping up by a large amount, but not growing significantly after that. Cheers, Cees On Wed, Oct 6, 2010 at 5:49 PM, William T dietbud...@gmail.com wrote: 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 j...@aaanet.ru: 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.
