OS - Memory Limit (HP-UX, Windows, Linux)

[Private_Member_19084]

Hi experts,

I have a question, I know which will not have a general answer, but I just would like to know it roughly.

We are using HP-UX, Windows and Linux Hosts.

We are having 64gb Memory available.

If we are having a lot of users on the system the memory goes down.

My question is now, how much memor should be available in general for the machine?

Maybe 10%, or 1MB or 1GB.

I just would like to know it roughly.

I am not talking about swapping-stuff or something like this, I only mean, what is the limit which I can enter for a monitoring/alerting-software.

Thank you

[former_member188883 · Accepted solution]

Hi Christian,

We are having 64gb Memory available.
If we are having a lot of users on the system the memory goes down.
 My question is now, how much memor should be available in general for the machine?
Maybe 10%, or 1MB or 1GB.

If the server is not able to handle the user load, you may need to resize the server configuration including CPU and RAM.

For re-sizing you may use SAP quicksizer tool www.service.sap.com/quicksizer

You may input relevant user load and generate the value in SAPS.

These SAPS value should be discussed with Hardware vendor to get the value of RAM and CPU .

Hope this helps.

Regards,

Deepak Kori

[Private_Member_19084 · Accepted solution]

Hello Deepak,

no, we are not facing performance impacts at the moment.

But I am setting up the monitoring in Solution Manager->Technical Monitoring.

And there the alerting starts in default by >10MB Memory and for me this sounds a bit less.

Kind regards

[former_member188883 · Accepted solution]

Hi Christian,

I feel the MTE corresponds to WP Memory usage >10 MB . You may either change the threshold to 100 MB  or create a new custom MTE. Do not increase the value to very high number as this may lead to serious problem and you may not be getting alerts for such high usage on Memory

Refer wiki link on creating custom MTE

http://wiki.scn.sap.com/wiki/download/attachments/269157890/How%20to%20create%20custom%20CCMS%20metr...

Objective of alert configuration is to intimate through emails when certain threshold values are reached.

SAP is delivering some standard template which can be customized based on our requirement.

We need to ensure that we get an alert at the right time to avoid major disaster.

Hope this helps.

Regards,

Deepak Kori

[Private_Member_19084 · Accepted solution]

Sorry a mistake from my side.

It is the total available memory of the os.

And alerts will be raised if it goes below 10MB.

I think I will change the limits to 100MB (yellow) and 50MB (red).

Kind regards

[former_member188883 · Accepted solution]

Hi Christian,

As you talk about Total available memory on OS , You may change the threshold as

500 MB - Yellow 

200 MB - Red   

Hope this helps.

Regards,

Deepak Kori

[Private_Member_19084 · Accepted solution]

ehmmmm.....yes.....but our system is always going near to 200MB lol

But we are not facing any impact, therefore I made the alert-limit very small.

Kind regards

[former_member188883 · Accepted solution]

Hi Christian,

You may configure the threshold as your proposed. IT should not be a problem

Regards,

Deepak Kori