"PMEG problem" patch for 4.0.3 available?

[Steinar.Haug at elab-runit.sintef.no]

Hello! Can anybody confirm or deny the existence of a patch for the "PMEG
problem" for SunOS 4.0.3? We have a number of SparcStations which we
suspect have just this problem. I've seen several references to a patch
for SunOS 4.1:

> Patch-ID# 100092-03
> Keywords: 4/60, performanc, memory, pmeg, kernel, vm
> Synopsis: poor VM performance of 4/60 with increased memory
> Date: July/27/90
> SunOS release: 4.1
>
> BugId's fixed with this patch:  1038249
> Architectures for which this patch is available: sun4 sun4c sun4-PSR_A
> Obsoleted by: 4.1.1
>
> Problem Description:
>
> The system overheads due to page map entry shuffling is excessive and with
> increased memory, the system overheads increase significantly.

but none yet for 4.0.3. Going to 4.1 is not an alternative; we'd like to
hold off any operating system upgrade until 4.1.1 is available.

Steinar Haug, system/networks administrator
ELAB-RUNIT, University of Trondheim, NORWAY
Email: Steinar.Haug at elab-runit.sintef.no,
	sthaug at idt.unit.no, steinar at tosca.er.sintef.no