Previously i was read that document
but if you see chart option for a VM performance about memory you will see follow parameters :
Active , Active write, Balloon target, compressed , compression rate, compression saved, consumed, decompress rate, grant, host consumed , host cache consumed , overhead, share, swap in , swap out , .........
As you see there is not any parameter such as usage that has been mentioned in that document .
Actually now i want to see realtime memory usage , which parameter do i had to see ?
You can use PowerCLI
-------------- Example 4 --------------
Get-VM -Name "MyVM" | Get-Stat -Stat "mem.usage.average" -Start $MyStartDateTime -Finish $MyFinishDateTime -MaxSamples 10
Retrieves the average memory usage statistics for the specified virtual machine between the specified start and finish date and time. The maximum number of retrieved samples is limited to 10.
-------------- Example 5 --------------
Get-VM -Name "MyVM" | Get-Stat -CPU -Memory -Realtime
Retrieves the real-time CPU and memory usage statistics for the specified virtual machine.
As I understood active memory is such as memory usage in real time
Is that correct ?
- The "active memory" is the one actually used at that time by the VM processes
- The "memory consumed" is the memory allocated by the ESXi for that VM
Yes, if memory consumed is 20 Gb.
Don't worry too much about "consumed", it is a memory that the VM's operating system uses to cache disk accesses (it uses it because it has it available).
Keep in mind that this value varies depending on the application. In the end it all depends on what runs on that VM, there could be processes that sleep all the time but that at particular times require a lot of system resources.
What processes were running on VM at that time that you scored 20 GB?
Are the consumption of 20 GB of memory fixed?
According attach pic 20GB is average consumed memory
Actually just running java (jboss) application server on that vm
2 - while i want see a report for a period time for example 24 hours there is not Active parameter to select in this mode do i had to select consumed ?
Clearly is needed to take a long-term average. You can also monitor Jboss consumption.
while i want see a report for a period time for example 24 hours there is not Active parameter to select in this mode do i had to select consumed ?