Author: Andrew R. Case
Date: 08:12:27 10/12/02
Go up one level in this thread
On October 12, 2002 at 07:08:12, William Penn wrote: > >I've been studying this for awhile, and I'm now fairly sure that Fritz7 has a >memory drain with W98se. If I monitor the free physical RAM with the W98 System >Monitor while Fritz7 is running in infinite calculation mode with 128MB hash >table on a 500MHz Celeron processor, 256MB RAM system, it gradually ticks down >towards zero. Eventually it arrives at zero and then the computer becomes very >sluggish and perhaps crashes. The rate of memory drain is about 2MB per minute. >So it depends on how much free physical memory you have to start. If you have a >lot, and you don't run Fritz7 for very long, it might not tick down to zero. But >for those who run Fritz7 for long periods, it may become a serious problem. > >I think I've found a temporary solution. Of course the Fritz7 programmers need >to fix this serious bug, but in the meantime... > >I'm testing a special little utility which boosts the free physical RAM by a >preset amount every x minutes. It is somewhat arbitrary what settings to use, >but I'm boosting to a minimum of 32MB RAM every 4 minutes. That means the free >memory ticks down to about 24MB, then gets boosted back to 32MB, then ticks down >to about 24MB, then gets boosted back to 32MB, ad infinitum in 4 minute cycles. >There are several such utilities available, and I've only tried this one, which >seems OK for this simple task. It's very simple and easy to understand & use. >It's called "CyberLat RAM Cleaner" which can be downloaded at: >http://www.cyberlatino.com.mx/ >Yes, much of that website is in Spanish because the author lives in Mexico, but >this software utility is written in English. > >The other consideration with W95/W98/W98se/WinMe is of course system resources, >which are quite limited with those op systems. (WinNT/2000/XP don't have that >problem.) But Fritz7 is not too greedy in that regard, and that's not the >problem here. The problem is definitely a memory drain. Some might call it a >memory leak. >WP The problem is with the "vcache" of win95/98/me. if you let windows manage the vcache dynamically it will after a period of time use all of your memory up for the vcache. Go to this website http://tweakhomepc.virtualave.net/memory/vcache.html it shows you how to set the vcache according to how much RAM you have in your system. Beware this site has plenty of popups :-)) Andrew R. Case
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.