apache use too much memory. How to find, what is wrong?
php:
apache_modules:
27949 apache 19 0 318m 279m 5500 S 2.7 15.3 0:08.03 httpd
27918 apache 16 0 319m 280m 4796 S 2.0 15.3 0:10.03 httpd
...
php:
'./configure' '--with-apxs2' '--with-curl=/usr/local/lib' '--with-gd' '--enable-gd-native-ttf' '--with-ttf' '--with-gettext' '--with-jpeg-dir=/usr/local/lib' '--with-freetype-dir=/usr/local/lib' '--with-kerberos' '--with-openssl' '--with-mcrypt' '--with-mhash' '--with-mysql=/usr' '--with-mysqli=/usr/bin/mysql_config' '--with-pcre-regex=/usr/local' '--with-pdo-mysql=/usr' '--with-pear' '--with-png-dir=/usr/local/lib' '--with-zlib' '--with-zlib-dir=/usr/local/lib' '--enable-zip' '--with-iconv=/usr/local' '--enable-bcmath' '--enable-calendar' '--enable-ftp' '--enable-magic-quotes' '--enable-sockets' '--enable-mbstring' '--with-imap=/usr/lib/dovecot/imap' '--with-imap-ssl' '--enable-soap' '--with-xsl'
apache_modules:
core mod_authn_file mod_authn_default mod_authz_host mod_authz_groupfile mod_authz_user mod_authz_default mod_auth_basic mod_include mod_filter mod_deflate mod_log_config mod_logio mod_env mod_expires mod_headers mod_unique_id mod_setenvif mod_version mod_proxy mod_proxy_connect mod_proxy_ftp mod_proxy_http mod_proxy_scgi mod_proxy_ajp mod_proxy_balancer mod_ssl prefork http_core mod_mime mod_dav mod_status mod_autoindex mod_asis mod_suexec mod_cgi mod_dav_fs mod_dav_lock mod_negotiation mod_dir mod_actions mod_userdir mod_alias mod_rewrite mod_so mod_php5 mod_ruid2 mod_rpaf-2