Catalyst sets SystemPages=183000 ??

Stephen M. Smit · May 21, 2005, 10:51 AM

Does anyone know why the Catalyst setup always sets SystemPages to 180000 in the Memory Management section of the registry? Just curious.

Steve

mkk · May 21, 2005, 11:09 AM

Probably a workaround to avoid system crashes when users apply the largefilecache setting. At least a while ago that was a big issue.

The_Neon_Cowboy · May 21, 2005, 11:22 AM

Quote:

Originally Posted by Stephen M. Smit

Does anyone know why the Catalyst setup always sets SystemPages to 180000 in the Memory Management section of the registry? Just curious.

Steve

please clarify what registry setting your talking about in the future:

"HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Contr ol\Session Manager\Memory Management\SystemPages"

Quote:

Originally Posted by mkk

Probably a workaround to avoid system crashes when users apply the largefilecache setting. At least a while ago that was a big issue.

Thats a value a I saw a whole bunch talking about the "large system cache" issue
when i searched. I vagely rember the issue. From like 2 years ago...

Could verry well be a work around I honestly don't know for sure.

Matth · May 21, 2005, 04:44 PM

Just checked my machine (Cat 5.1), Systempages 1585152 - how big is a page?

sc3000 · May 21, 2005, 06:10 PM

mine is set to 0xffffffff (4294967295)

omega drivers

ChoGGi · May 21, 2005, 08:47 PM

http://www.microsoft.com/resources/d...ntry/29939.asp

Stephen M. Smit · May 22, 2005, 04:34 AM

Right, that's why I ask the question. As noted in the MS documentation:

Do not change the value of this entry. Changing it prevents the system from calculating an optimal value for your system and adjusting the value when your system changes.
but this is exactly what the Catalyst setup does -- changes it to a hardcoded value rather than let XP figure it out dynamically...

Stephen M. Smit · May 22, 2005, 04:41 AM

Also, forgot to mention: I've been setting this value back to 0 since Catalyst 4.x and haven't found any ill effects. It's also interesting that the Catalyst setup uses the same 183000h value regardless of how much RAM is in my system or on the video card (have several different configs since 4.x).

Zorg · May 22, 2005, 07:10 AM

Quote:

Originally Posted by Matth

Just checked my machine (Cat 5.1), Systempages 1585152 - how big is a page?

Basically, this value reflects your total system ram including pagefile.
It's set to around 1.5 gig in my case having 1gig ram installed.

May 21, 2005, 10:51 AM	#1
Stephen M. Smit DriverHeaven Junior Member Join Date: Sep 2004 Posts: 79 Rep Power: 0	Catalyst sets SystemPages=183000 ?? Does anyone know why the Catalyst setup always sets SystemPages to 180000 in the Memory Management section of the registry? Just curious. Steve

May 21, 2005, 08:47 PM	#6
ChoGGi DriverHeaven Senior Member Join Date: Jun 2002 Location: Toronto Posts: 1,209 Rep Power: 0	http://www.microsoft.com/resources/d...ntry/29939.asp __________________ specs Common Problems and Fixes for your Radeon

May 21, 2005, 11:09 AM	#2
mkk Cthulhu/Dagon 2012 Join Date: Oct 2003 Location: Gefle, Sweden Posts: 4,495 Rep Power: 132 System Specs	Probably a workaround to avoid system crashes when users apply the largefilecache setting. At least a while ago that was a big issue.

May 21, 2005, 04:44 PM	#4
Matth Flash Banner Hater Join Date: Jun 2002 Location: UK Posts: 3,426 Rep Power: 93 System Specs	Just checked my machine (Cat 5.1), Systempages 1585152 - how big is a page?

May 21, 2005, 06:10 PM	#5
sc3000 DriverHeaven Lover Join Date: Jan 2005 Location: New York Posts: 225 Rep Power: 0	mine is set to 0xffffffff (4294967295) omega drivers

May 22, 2005, 04:34 AM	Thread Starter #7
Stephen M. Smit DriverHeaven Junior Member Join Date: Sep 2004 Posts: 79 Rep Power: 0	Right, that's why I ask the question. As noted in the MS documentation: Do not change the value of this entry. Changing it prevents the system from calculating an optimal value for your system and adjusting the value when your system changes. but this is exactly what the Catalyst setup does -- changes it to a hardcoded value rather than let XP figure it out dynamically...

May 22, 2005, 04:41 AM	Thread Starter #8
Stephen M. Smit DriverHeaven Junior Member Join Date: Sep 2004 Posts: 79 Rep Power: 0	Also, forgot to mention: I've been setting this value back to 0 since Catalyst 4.x and haven't found any ill effects. It's also interesting that the Catalyst setup uses the same 183000h value regardless of how much RAM is in my system or on the video card (have several different configs since 4.x).