more /boot/loader.conf
# 512MB
#vm.kmem_size=536870912
#vm.kmem_size_max=536870912
# 650MB
#vm.kmem_size=681574400
#vm.kmem_size_max=681574400
#local
vm.kmem_size=335544320
vm.kmem_size_max=335544320
kern.maxvnodes=400000
# ZFS min/max cache
# min: 32MB
vfs.zfs_arc_min=33554432
# max: 192MB
#vfs.zfs.arc_max=201326592
# max: 160MB
#vfs.zfs.arc_max=167772160
# max: 128MB
vfs.zfs.arc_max=134217728