Windows Desktop Heap Tweak Guide Posted!

[Bestia(ry)]

Originally Posted by Adrian Wong

Are you sure it's not due to the lack of memory??

.. I thought so as well ..

[NTGEEK]

Using Terminal services or remote desktop? That 48 mb number goes down to 20!
The fourth parameter is for terminal services.
Want to increase the size of the heap?
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Contro l\Session Manager\Memory Management \SessionViewSize
Desktop heap has been a passion of mine for 6 years now.
What was Microsoft thinking? Why isn't this stuff published except for in obscure Q articles that don't seem related to heap in general????

Correct me if I am wrong, but my understanding of the SharedSection parameters was:

SystemHeap,InteractiveDesktopHeap,Non-interactiveDesktopHeap,Terminal Services

Also, Want to let a service in the noninteractive heap space have access to the interactive? The checkbox "allow service to interact with desktop" Let's the services share space with the interactive.

Have fun, and remember, if your system won't boot after making changes, "Last Known good configuration" actually works on XP and 2003.

[Adrian Wong]

Originally Posted by NTGEEK

Using Terminal services or remote desktop? That 48 mb number goes down to 20!
The fourth parameter is for terminal services.
Want to increase the size of the heap?
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Contro l\Session Manager\Memory Management \SessionViewSize
Desktop heap has been a passion of mine for 6 years now.
What was Microsoft thinking? Why isn't this stuff published except for in obscure Q articles that don't seem related to heap in general????

Correct me if I am wrong, but my understanding of the SharedSection parameters was:

SystemHeap,InteractiveDesktopHeap,Non-interactiveDesktopHeap,Terminal Services

Also, Want to let a service in the noninteractive heap space have access to the interactive? The checkbox "allow service to interact with desktop" Let's the services share space with the interactive.

Have fun, and remember, if your system won't boot after making changes, "Last Known good configuration" actually works on XP and 2003.

Hmm.. There's a fourth number for Terminal Services??

Do you have any link to Microsoft's Q articles that covers this?

Thanks!!

[NTGEEK]

kb article http://support.microsoft.com/kb/q169321/ shows that the first value is obsolete (search for the word obsolete)
http://groups-beta.google.com/group/...b3de77a53c e7 has a thread where somone from microsoft includes this information about the fourth parameter. Nothing official on that fourth parameter is anywhere. Its a shame really because it says something (bad) about their support organization in not getting this information out to the general public.
As far as setting the actual global heap size :
There is an interesting article here:
http://support.microsoft.com/default...b;en-us;840342

I am glad to see this information being compiled somewhere by someone with as good a reputation as yourself. Maybe for the fourth parameter you could word it "There is some mystery surrounding the fourth parameter. While there is strong circumstancial evidence that this is related to terminal services, microsoft remains silent"

[peaz]

Hmmm interesting... tell you what I'll go and investigate that fourth value to see what happens. At my workplace, I use teminal services quite often to several servers and some of them have so many services running, that sometimes when i term in, i can't open many apps... will check it out...

[Adrian Wong]

Originally Posted by NTGEEK

kb article http://support.microsoft.com/kb/q169321/ shows that the first value is obsolete (search for the word obsolete)
http://groups-beta.google.com/group/...b3de77a53c e7 has a thread where somone from microsoft includes this information about the fourth parameter. Nothing official on that fourth parameter is anywhere. Its a shame really because it says something (bad) about their support organization in not getting this information out to the general public.
As far as setting the actual global heap size :
There is an interesting article here:
http://support.microsoft.com/default...b;en-us;840342

I am glad to see this information being compiled somewhere by someone with as good a reputation as yourself. Maybe for the fourth parameter you could word it "There is some mystery surrounding the fourth parameter. While there is strong circumstancial evidence that this is related to terminal services, microsoft remains silent"

Thanks for the links!

Will definitely make an update to the guide, as soon as peaz gets back to me with his findings!

[Elkdad]

Adrian,

OK, I just adjusted from 3072 to 4096KB of interactive desktop heap with no ill effects. I don't think this is my problem, but I didn't see why I shouldn't be able to try it.

Could you possibly link me to a forum in which I could discuss my system lockup problem? Thanks.

BTW, I hadn't planned that the shipper would have had the box I sent the ZM80C in dragged behind a submarine.

Dave

[Adrian Wong]

Originally Posted by Elkdad

Adrian,

OK, I just adjusted from 3072 to 4096KB of interactive desktop heap with no ill effects. I don't think this is my problem, but I didn't see why I shouldn't be able to try it.

Could you possibly link me to a forum in which I could discuss my system lockup problem? Thanks.

BTW, I hadn't planned that the shipper would have had the box I sent the ZM80C in dragged behind a submarine.

Dave

Hehe.. Yup, no real harm increasing the desktop heap.

Sure. You can post it in the Technical Support forum - http://forums.rojakpot.com/forumdisplay.php?f=16

Yeah, I didn't expect them to do so either.

[sri]

Very interesting and informative article.
Is it possible to monitor or programatically find the remaining
desktop heap size and shared desktop heap size

Cheers
Sri

[Adrian Wong]

Originally Posted by sri

Very interesting and informative article.
Is it possible to monitor or programatically find the remaining
desktop heap size and shared desktop heap size

Cheers
Sri

Hmm.. sorry, I have no idea how you can do that.