On Sat, May 31, 2008 at 12:49:53PM -0400, John Baldwin 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?
I believe the module memory is malloc'ed, isn't it ?
pgp7vOUJHsjCy.pgp
Description: PGP signature
