FreeBSD 5.2R+C: panic: kmem_malloc(4096): kmem_map too small

[Thierry Herbelot]

Le Saturday 17 January 2004 18:25, Peter Wood a écrit :
> Good Evening,
>
> I have come accross a reproducable panic in bother 5.2-Release and
> 5.2-Current (as it was an hour ago). To perform this, I create two 750Mb
> memory disks, format them and mount them. The machine has 2Gb of RAM, of
> which no more then 90mb is active.

Hello,

from what I've gathered, the md disks are allocated from the kernel address 
space, which is limited (see the line with "options     KVA_PAGES=260" in the 
NOTES kernel config file).

Anyway, on ia32, the 4GB address space has to be sahred between kernel and 
processes : let's go to the AMD64 !

I could recently make a RAM disk for "making buildworld", with a KVA_PAGES of 
512, an installed RAM of 2G and disks of 500MB for src and 700MB for objs.

	TfH