Path: utzoo!utgpu!cunews!bnrgate!brtph3!brchh104!brchs1!bnr.ca!rice.edu!sun-spots-request
From: felix@ai.sri.com (Francois Felix INGRAND)
Newsgroups: comp.sys.sun
Subject: Re: "PMEG problem" patch for 4.0.3 available?
Keywords: SunOS
Message-ID: <542@brchh104.bnr.ca>
Date: 29 Nov 90 17:09:08 GMT
Sender: news@brchh104.bnr.ca
Organization: Sun-Spots
Lines: 51
Approved: Sun-Spots@rice.edu
X-Original-Date: 21 Nov 90 20:10:23 GMT
X-Refs:  Original: v9n367
X-Sun-Spots-Digest: Volume 9, Issue 384, message 1
X-Note: Submissions: sun-spots@rice.edu, Admin: sun-spots-request@rice.edu

|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@AI.SRI.COM                                333, Ravenswood Avenue
(415) 859-5584                                  MENLO PARK, CA 94025, USA
"Read my Lisp... No new syntax" (nil)