kmem_map too small: 3832475648 total allocated

[Willem Jan Withagen]

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On 10-5-2010 20:09, Bruce Cran wrote:
> On Friday 30 April 2010 09:11:49 Gary Jennejohn wrote:
> 
>> 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?
> 
> It would appear that the maximum value for vm.kmem_size is twice the amount of 
> "avail memory" - as opposed to the "real memory". I have 6GB installed; 6144MB 
> gets detected but only 5873MB is available. Setting vm.kmem_size to 12G fails 
> but 10G works.

real memory  = 8589934592 (8192 MB)
avail memory = 8257212416 (7874 MB)

So I'm setting it to 14G and reboot.

(Which is a pain on my Areca card, since it keeps losing disks
 bu thatt is for another topic)

Ans now it gives me:
vm.kmem_size: 15032385536

So perhaps somebody should anotate /boot/defaults/loader.conf and/or
list this op more positions......

- --WjW

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