Tweak: ConservativeSwampUsage=1

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  • IWriteCode
  • Registratie: Juli 2000
  • Laatst online: 27-08 13:35

IWriteCode

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Mocht je veel geheugen in je PC hebben en Windows 95/98 draaien en kan het volgende helpen om de performance wat omhoog te krikken.

Voeg in de SYSTEM.INI in de sectie [386Enh] de volgende regel toe:
ConservativeSwapUsage=1

Dit heeft het gevolg dat Windows eerst al het aanwezig echte geheugen gaat gebruiken voordat er virtueel geheugen gebruikt gaat worden. Normaal doet Windows dat dus niet.

Ik heb hier al over gepost in een andere thread maar het is een interessante tweak voor elk Windows 9x systeem.
THE "CONSERVATIVE SWAP FILE USAGE" TWEAK
A WIn98/ME recommendation floating around various magazines and newsgroups is to add the following line to the [386Enh] section of the SYSTEM.INI file: ConservativeSwapfileUsage=1
Those who have used it, and reported favorably on it, say that it keeps their swap file usage lower, does not impede performance in any situation they have noticed, and seems to improve it in other situations. I have seen this reported on systems with 128 MB to 256 MB of RAM. I have seen it on my own 128 MB system.

Is there anything to this? What does it do?

Sometimes appearances can be deceiving. Sometimes not.

Based on benchmark testing by MS-MVPs Mike Burgess, Alex Nichol, and other MS-MVP colleagues, I have concluded that this tweak can be of real value in many Win98/ME systems with 128 MB of RAM or more (and on some 64 MB systems). If your machine has sufficient RAM that, for your particular use of your computer, there is relatively little swap file usage, then this tweak will probably improve system performance by reducing the overhead in swap file maintenance activities that you do not really need. [NOTE: In contrast to behavior in Win98, testing of this by Mike Burgess in Windows Millennium Edition showed no significant performance difference with or without it. However, because it does affect swap file run-away growth on some computers -- such as mine! -- I am presently recommending this on Windows ME.]

The default value of ConservativeSwapfileUsage was 1 in Win95, and 0 in Win98 and WinME. Therefore, this recommended tweak reverts a portion of the Win98/ME improved memory management system back to the way Win95 did things. (That's what sounded like such a bad idea at first, because Win98 or ME is generally far superior to Win95 with regard to memory management.) A valid question, though, is whether it is a good (that is, useful) idea for systems that have grown past the RAM size originally contemplated as typical when Win98 was created. For many computers, the answer seems to be: Yes, it is.

According to MS Knowledge Base article Q223294,

Windows 98 added a new feature, PageFile_Call_Async_Manager, that allows the Memory Manager to asynchronously write out page file (swap file) buffers during periods of time when VFAT file system activity is not busy. This feature can affect the behavior of VxDs [virtual drivers] that monitor and/or otherwise intercept PageFile VxD functions.

(See the article itself for more technical background on the rather clever way this function operates.)

This feature is part of improvements made initially in Windows 98 that lend the appearance of faster performance to a Win98/ME computer because many of the small time-consuming activities are deferred to moments when you are not actually asking the computer to do anything. The tweak described above disables this feature. As MS-MVP Jeff Richards summarized it, "It's more conservative in scheduling non-critical swap-file activity."

Microsoft advises that this change may be "at some cost in overall system performance." Furthermore, in theory it would seem that this would make the computer seem slower. But only experimentation on a given system (and by a particular user on that system) can determine what the subjective performance difference (pro or con) would be. Based on experience to date, I would say it is probable that this tweak will have a positive effect on systems with an unusually large amount of RAM, and very little swap file activity. It is unlikely that it would have a positive effect on other systems, and might have a negative impact on their performance.

Since the tweak is so easy to undo -- just remove, or comment out the line added to SYSTEM.INI -- "power users" will likely want to experiment with this and give more feedback to the general community.
Zie ook:
www.annoyances.org/cgi-bin/ce-discussion_show/win98_archive18?r945829921
member.aol.com/axcel216/98-4.htm
www.aumha.org/a/memmgmt.htm#conserve:

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  • Kool
  • Registratie: September 1999
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Heel oud nieuws... :Z
Dan kun je net zo goed iedere tip gaan posten die al lang bekend is.

  • Bokkie
  • Registratie: April 2000
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Bokkie

What the hell are you?

topic => ConservativeSwampUsage=1

conservatief moerasgebruik :P

| Respect to the man in the icecream van! |
| i'm not completely useless, I can be used as a bad example! |


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Op woensdag 21 maart 2001 09:02 schreef -=BoKKiE=- het volgende:
topic => ConservativeSwampUsage=1

conservatief moerasgebruik :P
Vast een ecologische Tweakert :)

  • IWriteCode
  • Registratie: Juli 2000
  • Laatst online: 27-08 13:35

IWriteCode

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Topicstarter
Op woensdag 21 maart 2001 09:02 schreef -=BoKKiE=- het volgende:
topic => ConservativeSwampUsage=1

conservatief moerasgebruik :P
Crap.. tiepvautje :(

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Bedankt voor de Tip! , Wist het niet, ik heb 256 mb en windows gebruikt vaak de hdd (swappen) nu is dat bijna geheel verdwenen en loopt alles een stuk sneller.

  • IWriteCode
  • Registratie: Juli 2000
  • Laatst online: 27-08 13:35

IWriteCode

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Topicstarter
Op woensdag 21 maart 2001 08:53 schreef Kool het volgende:
Heel oud nieuws... :Z
Dan kun je net zo goed iedere tip gaan posten die al lang bekend is.
Boeiuh. Het scheelt wel enorm veel en met de gedaalde geheugen-prijzen zijn er weer een hoop mensen die met deze tip geholpen kunnen zijn. Het scheelt echt veel namelijk.

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