On Fri, 30 Apr 2010 00:27:00 +0200 Willem Jan Withagen <w...@digiware.nl> wrote:
> On 29-4-2010 6:17, Artem Belevich wrote: > > Do you have vm.kmem_size set in /boot/loader.conf? > > > > If not, do set it to about double of your physical RAM size. Defaults > > are way too conservative for use with large amounts of memory and ZFS. > > As per this suggestion I set this value to 2*8G: > vm.kmem_size="17179869184" > > And bfore the kernel boots this value is set in the loader. > Tested it by goinginto the loader and show the value. > > But once booted I still get: > [/boot] w...@zfs.digiware.nl> sysctl vm.kmem_size > vm.kmem_size: 3718209536 > > So who is resetting this value??? > A number of variables go into calculating vm.kmem_size (see kmeminit() in kern_malloc.c). In the end, the kernel won't allocate more than twice the physical memory size _which it has discovered_. The question is, how much of your physical memory does the kernel actually see? -- Gary Jennejohn _______________________________________________ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
