Bug 208068

Summary:	physical memory based tunables can exhaust KVA
Product:	Base System	Reporter:	Justin Hibbits <jhibbits>
Component:	kern	Assignee:	freebsd-bugs (Nobody) <bugs>
Status:	New ---
Severity:	Affects Some People	CC:	emaste, shawn.webb
Priority:	---
Version:	CURRENT
Hardware:	Any
OS:	Any

Description Justin Hibbits freebsd_committer

2016-03-16 18:23:26 UTC

Tunables scaled against physical memory can exhaust KVA on large-memory 32-bit systems (PAE-style), causing early boot panics.

One possible solution would be to scale static allocations(based on maxusers) against KVA rather than physmem.