performance tunning

[Former Member]

Hello All,

can any one plz tell me how to do performance tunning in pec ecc6.0,plz dont mention only tcodes plz explain in detail .

Regards

upendar.D

[Former Member]

Hello Upendar,

First of all you need to go through the performance guide suggested by Markus to understand the areas to be covered during performance analysis and tunning.

Please read the document carefully. It will address your queries.

Good Luck.

Thanks,

Siva Kumar

[Former Member]

Hello Upender,

First of all, you need to know where the performance bottleck is occurring. As mentioned above, EWA would be a good start.

Apart from this, you can consider tcode ST06n to check the CPU and memory usage.

Now, you need to divide the performance problem into a tree :

1) Memory

For memory analysis, ST02 (memory analysis and history) would be the best.

Basically, check if extended memory usage is higher or heap memory.

If long running data extraction reports are running, it can cause both memory and high CPU usage.

2) CPU

For CPU, check the top processes consuming and long running... Check topas in AIX, task manager

In windows. Otherwise, you can see top 40 CPU processes in ST06n as well.

3) Dialog response time

This is also one of the major criteria to decide whether overall system is behaving fine or not.

ST03n can be checked to do detailed analysis.

Hope above info helps you in improving the system performance. Thanks.

[Former Member]

EWA is a good starting point to determine problem in your system. eg: if you suspect the memory allocation is the bottleneck by watching the objects kept being swapped but hit ratio more then 98% in ST02 then try adjust the allocation within RZ10(include physical memory in calculation though).

[markus_doehr2]

Start with

http://service.sap.com/performance

The topic is too big and too complex to explain in a discussion here. Use the above link to find first bottlenecks in your system and then you start trying to tune them.

Markus