apache 2.3.3 默认启用 event mpm?

编译参数
./configure --prefix=/usr/local/apache23 --enable-modules=none --enable-mods-shared=all --with-port=88

[root@rhel httpd-trunk]# /usr/local/apache23/bin/httpd -l
Compiled in modules:
  core.c
  event.c
  http_core.c
  mod_so.c
  mod_watchdog.c

[root@rhel httpd-trunk]# /usr/local/apache23/bin/httpd -V
Server version: Apache/2.3.3-dev (Unix)
Server built:   Apr  3 2009 20:19:08
Server's Module Magic Number: 20090401:0
Server loaded:  APR 2.0.0-dev, APR-UTIL 2.0.0-dev
Compiled using: APR 2.0.0-dev, APR-UTIL 2.0.0-dev
Architecture:   64-bit
Server MPM:     event
  threaded:     yes (fixed thread count)
    forked:     yes (variable process count)
Server compiled with....
 -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 DYNAMIC_MODULE_LIMIT=128
 -D HTTPD_ROOT="/usr/local/apache23"
 -D SUEXEC_BIN="/usr/local/apache23/bin/suexec"
 -D DEFAULT_ERRORLOG="logs/error_log"
 -D AP_TYPES_CONFIG_FILE="conf/mime.types"
 -D SERVER_CONFIG_FILE="conf/httpd.conf"