아파치 prefork인지 worker인지 확인 방법

/usr/local/apache2/bin httpd -V  Server version: Apache/2.0.63 Server built:   Mar 21 2011 18:20:43 Server's Module Magic Number: 20020903:13 Server loaded:  APR 0.9.17, APR-UTIL 0.9.15 Compiled using: APR 0.9.17, APR-UTIL 0.9.15 Architecture:   64-bit Server compiled with....  -D APACHE_MPM_DIR="server/mpm/prefork"  -D APR_HAS_SENDFILE  -D APR_HAS_MMAP  -D APR_HAVE_IPV6 (IPv4-mapped addresses enabled)  -D APR_USE_SYSVSEM_SERIALIZE  -D APR_USE_PTHREAD_SERIALIZE  -D SINGLE_LISTEN_UNSERIALIZED_ACCEPT  -D APR_HAS_OTHER_CHILD  -D AP_HAVE_RELIABLE_PIPED_LOGS  -D HTTPD_ROOT="/usr/local/apache2"  -D SUEXEC_BIN="/usr/local/apache2/bin/suexec"  -D DEFAULT_PIDLOG="logs/httpd.pid"  -D DEFAULT_SCOREBOARD="logs/apache_runtime_status"  -D DEFAULT_LOCKFILE="logs/accept.lock"  -D DEFAULT_ERRORLOG="logs/error_log"  -D AP_TYPES_CONFIG_FILE="conf/mime.types"  -D SERVER_CONFIG_FILE="conf/httpd.conf"