FreeBSD 9.2-RELEASE-p3 amd64 httpd compiled from ports, with -DFD_SETSIZE=131072, and: Compiled in modules: core.c mod_authn_file.c mod_authn_core.c mod_authz_host.c mod_authz_groupfile.c mod_authz_user.c mod_authz_core.c mod_access_compat.c mod_auth_basic.c mod_so.c mod_deflate.c http_core.c mod_mime.c mod_log_config.c mod_logio.c mod_env.c mod_expires.c mod_headers.c mod_setenvif.c mod_proxy.c mod_proxy_fcgi.c mod_proxy_fdpass.c mod_ssl.c worker.c mod_unixd.c mod_status.c mod_autoindex.c mod_negotiation.c mod_dir.c mod_actions.c mod_alias.c mod_rewrite.c I can't start httpd with more than 10900 VirtualHost's with "SSLEngine On". Each VirtualHost has own access log, error log, bytes log. httpd-error.log says: AH00016: Configuration Failed kern.openfiles shows 36000 Without "SSLEngine On" i can start httpd using ~40000 VH.