How is Memory Utilization calculated for Windows servers?
Memory Calculation
We run memory.vbs in WMI mode to get memory details. Here is a sample output:
memory.vbs
Microsoft (R) Windows Script Host Version 5.8
Copyright (C) Microsoft Corporation. All rights reserved.
Type: TotalSize: Used:
PhysicalMemory 8344472 5625448
VirtualMemory 16687084 6525100
SwapMemory 5505024 133964
FreePhysicalMemory 2654
Calculation :
| PhysicalMemUtilization in MB | PhysicalMemUtilization in % | VirtualMemUtilization in MB | VirtualMemUtilization in % | SwapMemUtilization in MB | SwapMemUtilization in % | Free Physical Memory in MB | |
| Expression | curValue / (1024) where, curValue = 4th line and 3rd token | (100*(curValue/maxValue)) where, curValue = 4th line and 3rd token maxValue = 4th line and 2nd token | curValue/(1024) where, curValue = 5th line and 3rd token | (100*(curValue/maxValue)) where, curValue = 5th line and 3rd token maxValue = 5th line and 2nd token | curValue/1024 where, curValue = 6th line and 3rd token | (100*(curValue/maxValue)) where, curValue = 6th line and 3rd token maxValue = 6th line and 2nd token | curValue where, curValue = 7th line and 2nd token |
| Calculation | 5625448 / 1024 = 5493 | (100*(5625448/8344472)) = 67.41% | 6525100 / 1024 = 6372 | (100*(6525100/16687084)) = 39.10% | 133964 / 1024 = 131 | (100*(133964/5505024)) = 2.43% | 2654 |
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