OOM Error - Revision history

N4gix: /* FINE TUNING VAS */

2013-02-26T18:13:57Z

FINE TUNING VAS

← Older revision		Revision as of 13:13, 26 February 2013
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	'''NOTE: The following applies only to Vista32 users:		'''NOTE: The following applies only to Vista32 users:
	--------------------------------------------------------'''		--------------------------------------------------------'''
	BCDEDIT /set increaseuserva 2560		BCDEDIT /set increaseuserva 2560
	BCDEDIT /set increaseuserva 3072		BCDEDIT /set increaseuserva 3072

	'''		'''

BASys at 18:01, 13 February 2010

2010-02-13T18:01:50Z

← Older revision		Revision as of 13:01, 13 February 2010
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	''Application programs'' and many ''system processes'' always reference memory using ''virtual memory addresses'' which are automatically translated to ''real (RAM) addresses'' by the hardware.		''Application programs'' and many ''system processes'' always reference memory using ''virtual memory addresses'' which are automatically translated to ''real (RAM) addresses'' by the hardware.

	~~Only core parts of~~ the ~~operating system kernel bypass this~~ address ~~translation and use real~~ memory addresses ~~directly~~.		Virtual memory divides the virtual address space of an application program into pages; a page is a block of contiguous virtual memory addresses.

	The virtual memory management component of the operating system maintains the tables used by the hardware to provide the mapping of virtual addresses into real addresses.		The virtual memory management component of the operating system maintains the translation tables used by the hardware to provide the mapping of virtual addresses into real addresses.

	==OOM Error==		==OOM Error==

BASys at 17:51, 13 February 2010

2010-02-13T17:51:06Z

← Older revision		Revision as of 12:51, 13 February 2010
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	}}		}}

	~~'''Overview - Virtual Memory'''~~

	A technique of simulating additional memory for an application to use.		== Overview ==

			''Virtual Memory'' is a technique of simulating additional memory for an application to use.

	''Application programs'' and many ''system processes'' always reference memory using ''virtual memory addresses'' which are automatically translated to ''real (RAM) addresses'' by the hardware.		''Application programs'' and many ''system processes'' always reference memory using ''virtual memory addresses'' which are automatically translated to ''real (RAM) addresses'' by the hardware.
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	The virtual memory management component of the operating system maintains the tables used by the hardware to provide the mapping of virtual addresses into real addresses.		The virtual memory management component of the operating system maintains the tables used by the hardware to provide the mapping of virtual addresses into real addresses.


	==OOM Error==		==OOM Error==

BASys at 17:49, 13 February 2010

2010-02-13T17:49:37Z

← Older revision		Revision as of 12:49, 13 February 2010
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	\| FS98 = unknown		\| FS98 = unknown
	}}		}}

			'''Overview - Virtual Memory'''

			A technique of simulating additional memory for an application to use.

			''Application programs'' and many ''system processes'' always reference memory using ''virtual memory addresses'' which are automatically translated to ''real (RAM) addresses'' by the hardware.

			Only core parts of the operating system kernel bypass this address translation and use real memory addresses directly.

			The virtual memory management component of the operating system maintains the tables used by the hardware to provide the mapping of virtual addresses into real addresses.


	==OOM Error==		==OOM Error==

	All 32 bit operating systems (WinXP and Vista32) have 4 GBs of ''Virtual Address Space'', (VAS), to work with, as that is the maximum number that can be expressed with only 32bits. The VAS table is the same size whether your system has 512MB RAM or 4GB of RAM...		All 32 bit operating systems (WinXP and Vista32) have 4 GBs of ''[http://en.wikipedia.org/wiki/Virtual_address_space Virtual Address Space]'', (VAS), to work with, as that is the maximum number that can be expressed with only 32bits.

			The VAS table is the same size whether your system physically has 512MB RAM or 4GB of RAM...

	By default, 2GB of VAS addresses are reserved for the operating system, with the remaining 2GB of VAS reserved for application programs. Note that every application running maintains it's own set of VAS addresses, and that the operating system will take care of shuffling both the application's address table and the data contents back and forth from the Virtual Memory on the hard drive as necessary.		By default, 2GB of VAS addresses are reserved for the operating system, with the remaining 2GB of VAS reserved for application programs.
			Note that every application running maintains it's own set of VAS addresses, and that the operating system will take care of shuffling both the application's address table and the data contents back and forth from the Virtual Memory on the hard drive as necessary.

	Obviously, everytime a running application needs to access it's VAS table and data, the OS needs to swap things around. The more application programs running at once, the more things get slowed down.		Obviously, everytime a running application needs to access it's VAS table and data, the OS needs to swap things around. The more application programs running at once, the more things get slowed down.

BASys at 17:05, 13 February 2010

2010-02-13T17:05:16Z

← Older revision		Revision as of 12:05, 13 February 2010
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	==OOM Error==		==OOM Error==

	All 32 bit operating systems (WinXP and Vista32) have 4 GBs of VAS to work with, as that is the maximum number that can be expressed with only 32bits. The VAS table is the same size whether your system has 512MB RAM or 4GB of RAM...		All 32 bit operating systems (WinXP and Vista32) have 4 GBs of ''Virtual Address Space'', (VAS), to work with, as that is the maximum number that can be expressed with only 32bits. The VAS table is the same size whether your system has 512MB RAM or 4GB of RAM...

	By default, 2GB of VAS addresses are reserved for the operating system, with the remaining 2GB of VAS reserved for application programs. Note that every application running maintains it's own set of VAS addresses, and that the operating system will take care of shuffling both the application's address table and the data contents back and forth from the Virtual Memory on the hard drive as necessary.		By default, 2GB of VAS addresses are reserved for the operating system, with the remaining 2GB of VAS reserved for application programs. Note that every application running maintains it's own set of VAS addresses, and that the operating system will take care of shuffling both the application's address table and the data contents back and forth from the Virtual Memory on the hard drive as necessary.

BASys at 15:07, 18 May 2008

2008-05-18T15:07:24Z

← Older revision		Revision as of 10:07, 18 May 2008
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	[[category:General]]		[[category:General]]
	~~[[category:FSX]]~~

BASys at 20:24, 18 April 2008

2008-04-18T20:24:58Z

← Older revision		Revision as of 15:24, 18 April 2008
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			{{Infobox-Applicable-FSVersion
			\| FSXI = false
			\| FSXA = true
			\| FSX = true
			\| FS2004 = false
			\| FS2002 = false
			\| FS2000 = unknown
			\| FS98 = unknown
			}}
	==OOM Error==		==OOM Error==

N4gix: /* OOM Error */

2008-03-05T23:05:14Z

OOM Error

← Older revision		Revision as of 18:05, 5 March 2008
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	For example, a video card with 512MB of onboard RAM will consume 512MB of the available operating system's slice of VAS, so robbing too much from the OS's slice can cause a lot of problems. As always, this is a balancing act...		For example, a video card with 512MB of onboard RAM will consume 512MB of the available operating system's slice of VAS, so robbing too much from the OS's slice can cause a lot of problems. As always, this is a balancing act...

	FINE TUNING VAS
			== FINE TUNING VAS ==

	As I stated previously, since it's a case of "robbing Peter to pay Paul," it may be best to allocate LESS than a full GB of VAS to applications, which is why Phil Taylor recommends using /2560 rather than the full /3072 MB.		As I stated previously, since it's a case of "robbing Peter to pay Paul," it may be best to allocate LESS than a full GB of VAS to applications, which is why Phil Taylor recommends using /2560 rather than the full /3072 MB.

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	'''		'''

	== WARNING! ==		== WARNING! ==
	'''		'''

N4gix: /* WARNING! */

2008-03-05T23:01:31Z

WARNING!

← Older revision		Revision as of 18:01, 5 March 2008
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	If this happens, you must reboot the computer into "Safe Mode" (which bypasses the /3GB switch, and then edit your boot.ini (WinXP) or use bcdecit (Vista) to reduce the size of the application slice of the VAS.		If this happens, you must reboot the computer into "Safe Mode" (which bypasses the /3GB switch, and then edit your boot.ini (WinXP) or use bcdecit (Vista) to reduce the size of the application slice of the VAS.

	[[:~~Category~~:FSX]]		[[category:General]]
			[[category:FSX]]

N4gix at 22:59, 5 March 2008

2008-03-05T22:59:18Z

← Older revision		Revision as of 17:59, 5 March 2008
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			==OOM Error==

	All 32 bit operating systems (WinXP and Vista32) have 4 GBs of VAS to work with, as that is the maximum number that can be expressed with only 32bits. The VAS table is the same size whether your system has 512MB RAM or 4GB of RAM...		All 32 bit operating systems (WinXP and Vista32) have 4 GBs of VAS to work with, as that is the maximum number that can be expressed with only 32bits. The VAS table is the same size whether your system has 512MB RAM or 4GB of RAM...