-p thread_pool_min=200 (default: 5) -p thread_pool_max=4000 (default 1000) -p thread_pool_add_delay=2 (default: 20ms, default in master: 2ms) -p session_linger=100 OR MORE (default: 0ms in <= 2.0.4 and 50ms in > 2.0.4) -s malloc,(YOURMEMORY-20%)G 4.1.1のデフォルト thread_pool_min 100 [threads] (default) thread_pool_max 5000 [threads] (default) thread_pool_add_delay 0.000 [seconds] (default)
thread_pools * thread_pool_max < kern.threads.max_threads_per_proc
kern.ipc.nmbclusters=65536 (126184) kern.ipc.somaxconn=16384 (128 kern.ipc.soacceptqueue) kern.maxfiles=131072 (261364) kern.maxfilesperproc=104856 (235224) kern.threads.max_threads_per_proc=4096 (1500) kern.ipc.maxsockets="131072" (261365) kern.ipc.maxpipekva="104857600" (133816320) 括弧内はFreeBSD10.1のデフォルト値（環境によって異なる）
https://github.com/kurita0/varnish4-freebsd/blob/master/sysctl.conf
