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Integrated ITS Performace

Former Member
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Hi,

We are upgrading our EBP System to SRM5.0 and are moving from standalone ITS 6.20 to a integrated ITS infrastructure.

Did anyone come across any performance issues with Integrated ITS that one should be aware of?

Thanks,

Prashanth

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Answers (1)

Answers (1)

former_member228142
Active Contributor
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Hi Prashanth,

we did recently a performance comparison: WebAS 6.40 with integrated ITS against ITS 6.20 both running on the same server. To create the load we run the SAP SD benchmark using Mercury Interactive Loadrunner. According to our measurement you can expect up to 30 % more performance when using WebAS 6.40 with integrated ITS.

Best regards,

Klaus

Former Member
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Thanks for the input Klaus. Do you also have any std integrated ITS parameter changes that you would recommend us to check/change.

Regards,

Prashanth

craig_bennett
Explorer
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Klaus,

Your post is very intersting - and I want to be quite clear on the results. Do you mean that the performance improved by 30% using integrated (WAS) ITS or that the load on the WAS platform increased by 30%? This is interesting because (if it is an improvement) it indicates that even though the WAS platform had to take on the additional load of ITS it still made a massive overall gain.

Regards,

Craig

former_member228142
Active Contributor
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Hi Prashanth,

regarding the integrated ITS in WebAS there is only one important parameter you have to tune:

em/global_area_MB

Make sure that this parameter is set to a appropriate value. Note 742048 provides information how to estimate the required memory. You may also want to run transaction sitspmon. The tab page "Memory statistics" shows you the required memory for templates and sessions. Based on the value of average memory/session you can calculate the required memory.

Best regards,

Klaus

former_member228142
Active Contributor
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Hi Craig,

be sure that the performance improvement does not result from a decreased performance of WebAS.

The test was done with an ITS 6.20 and a WebAS 6.40 running on the same box. We measured the CPU of the 6.20 AGate and the CPU of the SAP Kernel.

The CPU time for the standalone scenario was calculated by summing up AGate CPU and SAP Kernel CPU.

The CPU time for the integrated scenario was just the SAP kernel CPU.

Therefore even if the WAS load would have increased it would not affect the validity of the measurement.

The integration of the ITS into the WebAS gave the ITS development team many chances to improve the performance and the memory footprint. I.E. ITS 6.20 works internally completely with unicode. But the interface to the SAP system is ASCII and therefore all data sent or received has to be converted even if the SAP system runs with unicode. With the integrated ITS no data conversion between ITS and kernel is required anymore, because the complete kernel including the ITS component is either unicode or non-unicode. This saves a lot of CPU.

Best regards,

Klaus