panic: kmem_malloc(131072): kmem_map too small (AMD64)

[Darren Reed]

Kris Kennaway wrote:
> Larry Rosenman wrote:
>> On Fri, 21 Sep 2007, Kris Kennaway wrote:
>>
>>> Larry Rosenman wrote:
>>>> I'm a heavy ZFS user, and got the following panic on 2007-09-18 
>>>> source/world:
>>>
>>> This is a FAQ, please see the archives (you need to increase the 
>>> vm.kmem_size to provide more memory to ZFS).
>>
>> I thought that was only for i386, and it hadn't been an issue before.
>
> Nope.  It is also load-dependent.

So I just received this courtesy of ZFS:
panic: kmem_malloc(131072): kmem_map too small: 343027712 total allocated
cpuid = 0
KDB: enter: panic

This was with these settings in loader.conf:
vm.kmem_size=419430400
vm.kmem_size_max=419430400
vfs.zfs.arc_max=409715200

(That's 400M, 400M and 40M, respectively.)

Stupid question, perhaps, but is vm.kmem_size/vm.kmem_size_max limited 
by physical RAM?

Darren