on 04-23-2009 3:00 AM
This will be one of my daily monitoring. Can anyone tell me how to check all this and Why it should be like that.
For example Why the CPU Usage should be above 60%
Why the Free memory should be < 512mb
Why Use of Swap should be >2gb
And i am not sure how to check the Use of Swap
OS collector u2013 For each application server, report occurrences of any of the following:
CPU Usage > 60%,
Free Memory < 512 MB
Use of Swap > 2 GB
Thank you so much for all your help. Thanks.
Hi,
Why the CPU Usage should be above 60%
I don't know where you got that.. CPU idle time should be more than 20% so that your CPU is not overloaded.
Why the Free memory should be < 512mb
depends on your configuration setting of memory.. there is obviously something wrong.. why < ???
Why Use of Swap should be >2gb
again,depends on your configuration setting of memory... depends on the application also. instguide tells you whats the minimum swap you need to set during installation.
And i am not sure how to check the Use of Swap
you can do it as OS level, or by ST06, you will see commit charge free which gives a sum of ram, swap.
Regards,
Debasis.
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No interview questions
No research done
That information is widely available.
Read the "Rules of Engagement"
Regards
Juan
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Hi Ram,
CPU should not exceed more than 60% for long time for any process.So that your CPU is not overloaded.
An SAP application server shares the swap space in the host system with non-SAP processes. The maximum swap space size that an SAP application server can occupy is determined by the following factors: In SAP application server the shared memory segments uses 200 to 700MB.A work process which is running in sap takes approx 12MB.When SAP start the SAP extended memory pool takes 500 to 1500MB.Again R/3 limits for the HEAP memory for the work processes of an application server. Now you calculate the maximum sizes of the above mention area 700121500=2212MB.Again there are not only one work process in your system. Thats why its recommend that the swap space size should be greater than 2GB.
Check the below links for more info
http://help.sap.com/saphelp_nw04/helpdata/EN/02/962658538111d1891b0000e8322f96/frameset.htm
http://help.sap.com/saphelp_nw04/Helpdata/EN/02/96283e538111d1891b0000e8322f96/frameset.htm
http://help.sap.com/saphelp_nw04/Helpdata/EN/55/b5b93b5bb3493fe10000000a114084/frameset.htm
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