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sap performance issue

Former Member
0 Kudos

Dear all,

We are facing performance issue in our prod.

Our dialog response time =1,641ms.

have a look of below buffers, and suggest me that which parameter needs to be increase.

Screen buffer:

Efficiency Hitratio % 99.78

Hits 4,123,840

Requests 4,133,030

DB access quality % 99.78

DB accesses 9,190

DB accesses saved 4,123,840

Reorgs 9

Size Allocated kB 25,600

Available kB 25,483

Used kB 23,040

Free kB 2,443

Directory entries Available 2,000

Used 1,311

Free 689

Swaps Objects swapped 7,863

Frames swapped 0

Resets Total 0

-


Single record buffer:

Efficiency Hitratio % 95.16

Hits 28,986,930

Requests 30,462,487

DB access quality % 99.99

DB accesses 1,903

DB accesses saved 28,986,930

Reorgs 0

Size Allocated kB 9,999

Available kB 9,908

Used kB 9,908

Free kB 0

Directory entries Available 1,000

Used 187

Free 813

Swaps Objects swapped 0

Frames swapped 40,913

Resets Total 0

-


Generic key:

Efficiency Hitratio % 99.85

Hits 952,763,527

Requests 954,179,295

DB access quality % 99.78

DB accesses 760,892

DB accesses saved 349,992,455

Reorgs 2,499

Size Allocated kB 97,132

Available kB 95,564

Used kB 88,527

Free kB 7,037

Directory entries Available 9,999

Used 9,259

Free 740

Swaps Objects swapped 203

Frames swapped 0

Resets Total 0

-


Export/import:

Efficiency Hitratio % 96.77

Hits 6,012,787

Requests 6,213,680

DB access quality % 100.00

DB accesses 0

DB accesses saved 0

Reorgs 0

Size Allocated kB 102,400

Available kB 100,499

Used kB 10,010

Free kB 90,489

Directory entries Available 9,000

Used 8,999

Free 1

Swaps Objects swapped 4,585

Frames swapped 33,825

Resets Total 0

-


Regards,

Kutty

Accepted Solutions (0)

Answers (4)

Answers (4)

venkata_emandi
Participant
0 Kudos

Hello,

Performance could be due to several issue, check global work process and see the long running workprocess and check what program is it running tune those programs.

Thanks

venkata

Former Member
0 Kudos

Hi,

Please check ST06-Details analysis menu-Top CPU

Check if you scheduled SGEN ,Try to enable the trace and analyze

Please check the SAP Note

569587 - High response times for Session Manager in ST03

Check the Response time , Roll in time ,Roll wait time

Hope this will help full to you.

Regards

Bhuban

RKFL

Former Member
0 Kudos

Hi Bhuban

Thanks.

Former Member
0 Kudos

Hi Pradap,

You have to increase the following details,

zcsa/db_max_buftab ( 5000 )

rtbb/max_tables

rsdb/cua/buffersize [KB] 3,000 -6,000 KB

rsdb/ntab/entrycount

rsdb/ntab/ftabsize [KB] 20,000 -30,000 KB

I think it will be help for you.

john_studdert
Participant
0 Kudos

Hi Kutty, a slow dialog response time does not necessarily have to relate to a memory issue or issues with any of the buffer sizes. You presumably got the dialog response time figure in tx code st03n: can you dig a little deeper in there and find out the breakdown of just what makes up that 1641ms figure? There should be individual figures for DB access, CPU time etc. It could be that there's an issue somewhere else that might be indicated from this, but even if not, this is the logical place to start before spending too much time analysing buffer sizes and memory usage. It's always better to narrow down the area where the slowdown is occurring first, before spending too much time analysing any one area - it's the old 80/20 rule.