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Clodoaldo
clodoaldo.pinto.neto at gmail.com
Sat Mar 3 08:27:02 EST 2007
2007/3/2, Graham Dumpleton <grahamd at dscpl.com.au>: > > So, what do other people get? # uname -a Linux s0.localdomain 2.6.19-1.2895.fc6 #1 SMP Wed Jan 10 18:32:37 EST 2007 i686 athlon i386 GNU/Linux $ ls -las /usr/lib/httpd/modules/mod_python.so 1580 -rwxr-xr-x 1 root root 1611019 Feb 1 15:55 /usr/lib/httpd/modules/mod_python.so $ ls -las /usr/lib/python2.4/config/libpython2.4.a 1736 -rw-r--r-- 1 root root 1767520 Oct 23 17:58 /usr/lib/python2.4/config/libpython2.4.a # ldd /usr/lib/httpd/modules/mod_python.so linux-gate.so.1 => (0x00308000) libpthread.so.0 => /lib/libpthread.so.0 (0x008b4000) libdl.so.2 => /lib/libdl.so.2 (0x003ce000) libutil.so.1 => /lib/libutil.so.1 (0x00110000) libm.so.6 => /lib/libm.so.6 (0x00114000) libc.so.6 => /lib/libc.so.6 (0x0013b000) /lib/ld-linux.so.2 (0x80000000) >5. Work out how much memory Apache uses when mod_python is not being loaded. One can use 'top' for this. Hopefully others may suggest better ways. # top -U apache top - 13:04:02 up 27 days, 14:07, 3 users, load average: 1.03, 1.04, 1.01 Tasks: 116 total, 2 running, 114 sleeping, 0 stopped, 0 zombie Cpu(s): 0.3%us, 0.0%sy, 99.7%ni, 0.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 1538488k total, 1483200k used, 55288k free, 19692k buffers Swap: 4087888k total, 572k used, 4087316k free, 1313956k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 1367 apache 25 0 28728 5552 648 S 0.0 0.4 0:00.00 httpd >6. Work out how much memory Apache uses when mod_python is loaded but before any requests have occurred. Ensure that no PythonImport directives have been used. # top -U apache top - 13:06:41 up 27 days, 14:10, 3 users, load average: 1.00, 1.02, 1.00 Tasks: 116 total, 2 running, 114 sleeping, 0 stopped, 0 zombie Cpu(s): 6.6%us, 1.1%sy, 90.2%ni, 1.5%id, 0.2%wa, 0.2%hi, 0.2%si, 0.0%st Mem: 1538488k total, 1486348k used, 52140k free, 20000k buffers Swap: 4087888k total, 572k used, 4087316k free, 1316220k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 1423 apache 25 0 30948 6724 808 S 0.0 0.4 0:00.00 httpd >If eager, use a hello world mod_python example and trigger one request against it and see how size changes. After one publisher helloword request: # top -U apache top - 13:20:49 up 27 days, 14:24, 3 users, load average: 1.00, 1.00, 1.00 Tasks: 117 total, 2 running, 115 sleeping, 0 stopped, 0 zombie Cpu(s): 0.0%us, 0.0%sy,100.0%ni, 0.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 1538488k total, 1490996k used, 47492k free, 21880k buffers Swap: 4087888k total, 572k used, 4087316k free, 1314228k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 1423 apache 15 0 35020 12m 3212 S 0.0 0.8 0:00.26 httpd 1452 apache 15 0 30948 6724 808 S 0.0 0.4 0:00.00 httpd >7. If you are also loading lots of other Apache modules, such as mod_perl, module for PHP etc, list any significant ones so we might understand what else may be using memory. Ideally, do the tests with as little modules loaded as possible. # httpd -M Loaded Modules: core_module (static) mpm_prefork_module (static) http_module (static) so_module (static) auth_basic_module (shared) auth_digest_module (shared) authn_file_module (shared) authn_alias_module (shared) authn_anon_module (shared) authn_dbm_module (shared) authn_default_module (shared) authz_host_module (shared) authz_user_module (shared) authz_owner_module (shared) authz_groupfile_module (shared) authz_dbm_module (shared) authz_default_module (shared) ldap_module (shared) authnz_ldap_module (shared) include_module (shared) log_config_module (shared) logio_module (shared) env_module (shared) ext_filter_module (shared) mime_magic_module (shared) expires_module (shared) deflate_module (shared) headers_module (shared) usertrack_module (shared) setenvif_module (shared) mime_module (shared) dav_module (shared) status_module (shared) autoindex_module (shared) info_module (shared) dav_fs_module (shared) vhost_alias_module (shared) negotiation_module (shared) dir_module (shared) actions_module (shared) speling_module (shared) userdir_module (shared) alias_module (shared) rewrite_module (shared) proxy_module (shared) proxy_balancer_module (shared) proxy_ftp_module (shared) proxy_http_module (shared) proxy_connect_module (shared) cache_module (shared) suexec_module (shared) disk_cache_module (shared) file_cache_module (shared) mem_cache_module (shared) cgi_module (shared) php5_module (shared) proxy_ajp_module (shared) python_module (shared) Syntax OK HTH. Regards, -- Clodoaldo Pinto Neto
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