on 07-26-2011 12:50 PM
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
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
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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
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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.
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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.
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