I have server with 8Gb RAM and FreeBSD 6.4 i386
I build kernel with PAE support and KVA_PAGES=512
and when add in /boot/loader.conf
vm.kmem_size=1G
vm.kmem_size_max=1G
or
build kernel with
options VM_KMEM_SIZE=1073741824
options VM_KMEM_SIZE_MAX=1073741824
I got a kernel panic "panic: kmem_suballoc "
whit kernel without PAE I haven't this problem
I build kernel with PAE support and KVA_PAGES=512
and when add in /boot/loader.conf
vm.kmem_size=1G
vm.kmem_size_max=1G
or
build kernel with
options VM_KMEM_SIZE=1073741824
options VM_KMEM_SIZE_MAX=1073741824
I got a kernel panic "panic: kmem_suballoc "
whit kernel without PAE I haven't this problem