"PMEG problem" patch for 4.0.3 available?

[Francois Felix INGRAND]

|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:

There is such a patch, we have it installed here. However, I recall that
the README was misleading (no patch ID and the OS is WRONG), however, I
recall ordering them both at the same time:

Patch-ID#  
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 the README of the 4.1 version is correct:

Patch-ID#   100092-01
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.

Francois Felix INGRAND                          SRI International, AIC
felix at AI.SRI.COM                                333, Ravenswood Avenue
(415) 859-5584                                  MENLO PARK, CA 94025, USA
"Read my Lisp... No new syntax" (nil)