On Sun, Jun 1, 2008 at 12:49 AM, John Baldwin <[EMAIL PROTECTED]> wrote: > On Saturday 31 May 2008 01:52:56 am Tz-Huan Huang wrote: >> Hi, >> >> Our nfs server is running 7-stable/amd64 with 8G ram, the size of zfs >> pool is 12T. We have set vm.kmem_size and vm.kmem_size_max to >> 1.5G, but the kernel still panics by "kmem_map too small" often. >> According to [1], the limitation is not only by the loader (is it fixed >> now?) but also by the default layout of KVM. [2] points a way to increase >> the KVM, but we get the similar linking error. >> >> Is there any standard way to modify the layout of KVM? For example, we >> may want to set KVM to 6G and leave the 2G for user space usage. > > On i386 you only have 4GB of virtual address space period. For amd64 you can > jack up KVM just fine AFAIK. The mcmodel=kernel stuff should only affect > global variables (so .data and .bss) and not malloc'd stuff. Have you tried > increasing the KVM size and seeing what happens?
Actaully I have no idea how to increase the KVM size ... Should I change some knobs on kernel conifg or some codes? When setting the vm.kmem_size to almost or more than 2G, the kernel panics immediately after booting. When I change the KPDPI like [1], I have linking error. Thanks, Tz-Huan [1] http://lists.freebsd.org/pipermail/freebsd-current/2008-March/084325.html _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"
