Performance Tuning Best Practices/Recommendations

[Former Member]

We recently went like on a ECC6.0 system. We have 3 application servers that are showing a lot of swaps in ST02.

Our buffers were initially set based off of SAP Go-Live Analysis checks. But it is becoming apparent that we will need to enlarge some of our buffers.

Are there any tips and tricks I should be aware of when tuning the buffers?

Does making them too big decrease performance?

I am just wanting to adjust the system to allow the best performance possible, so any recommendations or best practices would be appreciated.

Thanks.

[Former Member]

Thanks for all your input.

[Former Member]

Hi,

Just follow the go live analysis report ....You don't worry

Regards

Ben

[Former Member]

I did already follow the go live report, but that is the problem. Their recommendations are producting about 50,000 swaps per day in a couple of buffers.

[Former Member]

Hi Drew,

What all buffer in ST04 is showing in red. Whats your OS ?

Also check note 103747 and

Thanks

Prince Jose

[Former Member]

Hi,

Please post parameters.

Regards

Ben

[Former Member]

See the link for current parameters - http://aycu25.webshots.com/image/19344/2001043665580775075_rs.jpg

This is running on a Win2k3 x64 server with 8GB or RAM

[Former Member]

Hi,

Please increase the value of parameters in small increments. If you set the parameters too large, memory is wasted. This can result in paging if too much memory is taken from the operating system and allocated to SAP buffers.

For example, if abap/buffersize is 500000, change this to 600000 or 650000. Then analyze the performance and adjust parameters accordingly.

Please check out <a href="http://help.sap.com/saphelp_nw04/helpdata/en/c4/3a6f4e505211d189550000e829fbbd/content.htm">this link</a> and all embedded links. The documentation provided there is fairly elaborate. Moreover, the thread mentioned by Prince Jose is very good for a guideline as well.

Best regards