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Standby and Free Memory?

post #1 of 4
Thread Starter 
Hi folks,
Among other things, my Resource Monitor shows the status of my memory and in particular concern to me is "Standby" and "Free" memory.
What's the difference between Standby Memory and Free memory and if Standby memory isn't able to be used by any program but a select few, how can I change it?
Thanks, Rich
post #2 of 4
It's Windows trying to predict what you're going to do and sort of prebuffering ram allocation. When you don't do what it expects and start another program that needs said ram it will allocate with no notable performance hit and it's there for a reason.
post #3 of 4
Quote:
Originally Posted by wingclip View Post

Hi folks,
Among other things, my Resource Monitor shows the status of my memory and in particular concern to me is "Standby" and "Free" memory.
What's the difference between Standby Memory and Free memory and if Standby memory isn't able to be used by any program but a select few, how can I change it?
Thanks, Rich

Standby memory is memory that the Windows memory manager has moved out from a process working set - but has kept it accessible. The standby memory, or more accurately the standby page list is a sort of cache for application code + data. When an application requires pages that are not in its working set, if these pages are in the standby list, a "soft" fault occurs (as opposed to a hard fault where the pages come from the paging file, the executable on disk, or a mapped file on disk).

Free memory (or the free page list) is memory that has been freed for use and is waiting to enter the zero page list to be zeroed out and given to applications that require pages of memory. Standby memory is able to be used by all applications - but they do not control it, neither do you - only the Windows memory manager governs the usage of the standby page list.
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Ol' Sandy
(28 items)
 
"Zeus"
(12 items)
 
Elite Preview
(6 items)
 
CPUMotherboardGraphicsRAM
Intel Xeon E3-1230v3 Gigabyte GA-Z97X-UD5H-BK MSI Gaming GTX 980 Kingston 32GB (4x8) 
Hard DriveHard DriveHard DriveHard Drive
Plextor PX-256M5S 256GB Samsung EVO 1TB Hitachi HDS721010CLA332 Hitachi HDS723020BLA642 
Hard DriveHard DriveHard DriveOptical Drive
Hitachi HDS723020BLA642 Hitachi HUA722010CLA330 WDC WD10EARS-00Z5B1 TSSTcorp CDDVDW SH-S223B 
CoolingCoolingOSMonitor
Phanteks PH-TC14PE with TY-140's Lamptron FCv5 (x2) Windows 8 Pro 64-bit Dell U2412M 
MonitorMonitorMonitorKeyboard
Dell U2412M Dell U2212HM Dell U2713HM Topre Realforce 87UB | Ducky DK9087 G2 Pro 
PowerCaseMouseMouse Pad
Corsair AX-750 Corsair Obsidian 650D Logitech G700 XTRAC Ripper XXL 
AudioAudioAudioAudio
Beyerdynamic DT-770 Pro 250ohm Schiit Bifrost DAC Schiit Asgard 2 HiVi Swan M50W 2.1 
CPUMotherboardRAMHard Drive
Intel Xeon E5-2620 Super Micro X9SRL-F-B 128GB 1333MHz LSI 9271-8i 
OSPowerCase
VMware ESXi 5.5 SeaSonic SS-400FL2 Fractal Define R3 
CPUMotherboardGraphicsRAM
Intel Core i5-3437U HP EliteBook Folio 9470m  Intel HD Graphics 4000  16GB DDR3 SDRAM 
Hard DriveOS
256GB SSD Windows 10 Insider Preview 
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post #4 of 4
Thread Starter 
Thanks to both of you! I had asked that once before in a Microsoft site but I guess I never really understood what I got for an answer over there.
Thanks again, Rich
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