Bug 208068 - physical memory based tunables can exhaust KVA
Summary: physical memory based tunables can exhaust KVA
Status: New
Alias: None
Product: Base System
Classification: Unclassified
Component: kern (show other bugs)
Version: CURRENT
Hardware: Any Any
: --- Affects Some People
Assignee: freebsd-bugs mailing list
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2016-03-16 18:23 UTC by Justin Hibbits
Modified: 2016-03-23 15:03 UTC (History)
2 users (show)

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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.