Windows 95 system resources decay over time
Windows 95 system resources decay over time
(OP)
Hii...
I have a P100 with 64MB Ram PC which handle laser marking operation. It has got one A/D I/O card that controls the laser machine.The PC does 3 things :
1. Communicate with PLC (AB SLC500)
2. Control laser marking application (only runs on Win95)
3. Gets data from server (networked)
The problem is that the PC system resources decay to zero after sometime. I installed TaskInfo2003 from www.iarsn.com to see what's going on. I found out the laser marking application is using 100% of CPU capacity.
When the resources becomes zero, my laser marking will hang-up and burns the product. But this does not happen all the time or better word intermittently.
I tried to change the laser marking application priority from "Normal" to "Idel" or "Low" and suddenly the CPU usage dropped to 8%. However, th system resources still decay over time (after reboot is 88% and after 1 day 35%).
The questions are :
1. What causes system resources to decay over time ?
2. What does it really means by "High", "Normal" and "Low" priority.
Hope you guys can help.
Sahrani
I have a P100 with 64MB Ram PC which handle laser marking operation. It has got one A/D I/O card that controls the laser machine.The PC does 3 things :
1. Communicate with PLC (AB SLC500)
2. Control laser marking application (only runs on Win95)
3. Gets data from server (networked)
The problem is that the PC system resources decay to zero after sometime. I installed TaskInfo2003 from www.iarsn.com to see what's going on. I found out the laser marking application is using 100% of CPU capacity.
When the resources becomes zero, my laser marking will hang-up and burns the product. But this does not happen all the time or better word intermittently.
I tried to change the laser marking application priority from "Normal" to "Idel" or "Low" and suddenly the CPU usage dropped to 8%. However, th system resources still decay over time (after reboot is 88% and after 1 day 35%).
The questions are :
1. What causes system resources to decay over time ?
2. What does it really means by "High", "Normal" and "Low" priority.
Hope you guys can help.
Sahrani





RE: Windows 95 system resources decay over time
TTFN
RE: Windows 95 system resources decay over time
Thanks for the reply. How do I flush out the not-properly-reclaimed virtual memory ?
Another thing, I have upgraded to Win98 last week and still seeing the decaying resources thing. I do not have an option to upgrade/modify the laser marking application since it's an old one. The OEM told me that newer version only works with new Laser system (that is about 100kUSD).
SahraniKasim
RE: Windows 95 system resources decay over time
Since you now have a means of monitoring the situation, when the memory drops below whatever you determine to be a critical threshold, e.g., prior to the operating system and application crashing, you'll need either close down and restart the application or reboot the operating system. It may be possible that closing the application will recover some of the lost memory, but that depends on the application.
TTFN
RE: Windows 95 system resources decay over time
Any comment ?
RE: Windows 95 system resources decay over time
Perhaps the other "user" was somehow using the graphics display resource more intensively.
TTFN
RE: Windows 95 system resources decay over time
About releasing free memory allocated (but not in use) by programs, I had a similar problem in the past with win98. I got a program "MemTurbo" from http://www.memturbo.com/ and it really worked fine. You can set some low memory trigger limits and it starts automatically recovering memory.
Cato
RE: Windows 95 system resources decay over time
The PC needs info from server (server writes to the laser PC). How do I allow a specific PC/server to access a PC while blocking it from the rest of the network. RS232 is not an option due to the distance.
RE: Windows 95 system resources decay over time
In the Network properties window look for the tab "Access control". There you have two option "Resources access control" and "Users access control". I guess you have choosen the first one. Choose now the second option and put in the name of the domain where you want to choose the users list. Must be the same domain of your server.
Now while sharing folders you can what users to giva access (even read only or read & write access).
It would be a good idea to change you server admin password.
Hoping this would be useful.
Cato
RE: Windows 95 system resources decay over time
Thanks for the advice. Will try that soon...
Sahrani
RE: Windows 95 system resources decay over time
http://www.hp.com/cposupport/personal_computing/support_doc/bph06569.html
http://www.pacs-portal.co.uk/startup_content.htm
Please note that I am a computer novice and do not have any experience with process control.
Hope this helps.
RE: Windows 95 system resources decay over time
As far as the memory leaks are concerned, that's just Windows for ya. There are tools available on the net for reclaiming your lost memory. One such tool I remember is called FreeMem. Do a search for it on google. I think its free. Basically, it simulates a request to run a "memory hog" program and Windows allocates the memory. It then properly "closes" this "program" and poof, you have more memory.
RE: Windows 95 system resources decay over time
for example:
[vcache]
minFileCache=16384
maxFileCache=32768
this sets the min file caching to 16 megs and the max to 32 megs.
you can also run a windows NT code called "clearmem.exe" every so often. it frees up (or purges) all unused memory. it works fine in win 96b. it prob. works in win95 and win95A.
although win 98 is quite a bit slower and uses more memory, and uses a lot of processor capability; if you install win 98SE upgrade you will find that the memory manager is much better at limiting the progressive loss of available memory.
RE: Windows 95 system resources decay over time
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RE: Windows 95 system resources decay over time
With task manage downloaded from www.iarsn.com, I could monitor system indices. I realized that everything except CPU usage is OK.
After running the laser marking application for 4 hours, the CPU usage becomes 100% and I can only bring it back to minimal by rebooting the PC. Why this happena dn hwo do I tackle this problem?? Thanks in advance.
RE: Windows 95 system resources decay over time
There are supposedly programs that can recover lost memory, but you still might need to unload the program at the minimum.
In some cases, it might be Windows itself that's honked up, in which case, you'll definitely have to reboot.
TTFN
RE: Windows 95 system resources decay over time
have you tracked usage of available memory with time?
RE: Windows 95 system resources decay over time
RE: Windows 95 system resources decay over time
windows bashing, not here, we're just dealing with a few of the un-documented features...
RE: Windows 95 system resources decay over time
RE: Windows 95 system resources decay over time
It may be worth examining the resources required by the A/D I/O controller card (particularly the use of IRQ(s) and/or DMA channels) and what it is being allowed to use under windows. A little reconfiguration of the A/D I/O controller may restore the system to reliable operation. If you decide to examine hardware resources it may also be worth taking a look at any other hardware devices, especially networking resources and demands.
Hope this helps in some way.