>Number:         11121
>Category:       port-vax
>Synopsis:       machine hang under load
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    port-vax-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Oct 03 03:07:00 PDT 2000
>Closed-Date:
>Last-Modified:
>Originator:     Manuel Bouyer
>Release:        1.5 branch as of a few days ago
>Organization:

Good old machines's home :)

>Environment:
	
System: NetBSD cordouan.antioche.eu.org 1.5_ALPHA2 NetBSD 1.5_ALPHA2 (CORDOUAN) #1: Tue Oct 3 06:53:46 MEST 2000 bouyer@cordouan.antioche.eu.org:/home/sources-vax/src/sys/arch/vax/compile/CORDOUAN vax

Machine is a uVAX II/3300 with 24M RAM, diskless


>Description:
	under load (from other posts to the port-vax mailing list this seems
	related to swapping) the machine hangs hard. I can reproduce this
	reliably with a 'make build'. this machine had been reliable with
	1.5_ALPHA

	reverting pmap.c to 1.82.2.1 makes the machine panic with
	panic: pmap_enter onto myself
	while running 'make build'
	reverting pmap.c to  1.82 and pmap.h to 1.39 makes the machine stable
	again.

>How-To-Repeat:
	'make build', with NBUILDJOBS big enouth to make the machine swap.
>Fix:
	workaround: revert pmap.c/pmap.h to the 1.5_ALPHA version.
>Release-Note:
>Audit-Trail:
>Unformatted: