Steinar.Haug@elab-runit.sintef.no (11/21/90)
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@elab-runit.sintef.no, sthaug@idt.unit.no, steinar@tosca.er.sintef.no
felix@ai.sri.com (Francois Felix INGRAND) (11/30/90)
|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)