which mpm is the apache running?

[root@ss ~]# httpd -l

Compiled in modules:

core.c

mod_authn_file.c

mod_authn_dbm.c

mod_authn_anon.c

mod_authn_dbd.c

mod_authn_socache.c

mod_authn_core.c

mod_authz_host.c

mod_authz_groupfile.c

mod_authz_user.c

mod_authz_dbm.c

mod_authz_owner.c

mod_authz_dbd.c

mod_authz_core.c

mod_access_compat.c

mod_auth_basic.c

mod_auth_form.c

mod_auth_digest.c

mod_allowmethods.c

mod_file_cache.c

mod_cache.c

mod_cache_disk.c

mod_cache_socache.c

mod_socache_shmcb.c

mod_socache_dbm.c

mod_socache_memcache.c

mod_so.c

mod_macro.c

mod_dbd.c

mod_dumpio.c

mod_buffer.c

mod_ratelimit.c

mod_reqtimeout.c

mod_ext_filter.c

mod_request.c

mod_include.c

mod_filter.c

mod_substitute.c

mod_sed.c

mod_deflate.c

http_core.c

mod_mime.c

mod_log_config.c

mod_log_debug.c

mod_logio.c

mod_env.c

mod_expires.c

mod_headers.c

mod_unique_id.c

mod_setenvif.c

mod_version.c

mod_remoteip.c

mod_proxy.c

mod_proxy_connect.c

mod_proxy_ftp.c

mod_proxy_http.c

mod_proxy_fcgi.c

mod_proxy_scgi.c

mod_proxy_wstunnel.c

mod_proxy_ajp.c

mod_proxy_balancer.c

mod_proxy_express.c

mod_session.c

mod_session_cookie.c

mod_session_dbd.c

mod_slotmem_shm.c

mod_ssl.c

mod_lbmethod_byrequests.c

mod_lbmethod_bytraffic.c

mod_lbmethod_bybusyness.c

mod_lbmethod_heartbeat.c

mod_unixd.c

mod_dav.c

mod_status.c

mod_autoindex.c

mod_info.c

mod_suexec.c

mod_cgi.c

mod_dav_fs.c

mod_dav_lock.c

mod_vhost_alias.c

mod_negotiation.c

mod_dir.c

mod_actions.c

mod_speling.c

mod_userdir.c

mod_alias.c

mod_rewrite.c





I did not get prework or worker either.



I'm using 2.0.0-RC7 (rev: 1218).



so if I wanna optimize apache, which mpm I shoudl config?

which mpm is the apache running?