>> On tuesday I crashed a machine after it ran out of kvm. (dual PII 400 with
>> 768MB RAM)  poking about in the code adding:
>> 
>> options              "VM_KMEM_SIZE=(24*1024*1024)"
>> options              "VM_KMEM_SIZE_MAX=(128*1024*1024)"
>> 
>> seems like a good way foward. Is it?
>
>>From what I can see, you shouldn't need to set VM_KMEM_SIZE_MAX unless 
>you're also setting VM_KMEM_SIZE_SCALE.
>
>I just committed a tweak that allows you to say:
>
>       set kern.vm.kmem.size=<value>
>
>at the loader prompt or in /boot/loader.rc to override the default 
>VM_KMEM_SIZE value.
>
>If anyone has any more of these tunables that can easily be enhanced 
>like this, please let me know.

   Is there a way from the boot loader that one can find out what options
are available to be tuned?

-DG

David Greenman
Co-founder/Principal Architect, The FreeBSD Project

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