hhvm server.ini example for 18gb RAM Root-Server

server.ini

; php options
pid = /var/run/hhvm/pid

; hhvm specific 
hhvm.server.port = 9000
hhvm.server.type = fastcgi
hhvm.server.default_document = index.php
hhvm.log.use_log_file = true
hhvm.log.file = /var/log/hhvm/error.log
hhvm.repo.central.path = /var/run/hhvm/hhvm.hhbc

; Custom server configuration
hhvm.server.fix_path_info = true
hhvm.server.thread_count = 16
hhvm.server.enable_keep_alive = true
hhvm.server.enable_ssl = true

; Custom APC configuration
hhvm.server.apc.enable_apc = true
hhvm.server.apc.table_type = concurrent
hhvm.server.apc.expire_on_sets = true
hhvm.server.apc.purge_frequency = 4096

; Custom MySQL configuration
hhvm.mysql.slow_query_threshold = 10000

; Custom configuration
; @see https://github.com/facebook/hhvm/issues/2851
hhvm.jit_a_size = 536870912
hhvm.jit_a_cold_size = 268435456
hhvm.jit_a_frozen_size = 536870912
hhvm.jit_a_prof_size = 536870912
hhvm.jit_a_max_usage = 536870912