Many SwaP entries found on ST02

Question

Hi Team,
When i perform a weekly helath check on production system.I found that many swap entires are popping up in red and also users feeling that system is running bit slow since few days. Can some one please help us in indentifying the issue and sugegst us on fixign this issue.
   Buffer         Hitratio   Allocated     Free space        Dir. size      Free directory           Swaps       DB                        [%]       [kB]         [kB]         [%]      Entries      Entries       [%]                   accesses
Nametab (NTAB)
Table definition     98.09         6,330        2,494    43.73        20,000        8,745    43.73          0        11,993
Field description    95.61        30,859        5,609    18.70        20,000       15,964   79.82   15,157   19,756
  Short NTAB            97.05         3,332        2,830    94.33         5,000        4,470     89.40             0        530
  Initial records         92.49         6,332          974    16.23         5,000        1,466     29.32       13,182    16,716
Program                98.06       400,000          737     0.20       100,000       91,336   91.34    31,726     121,302
CUA                      98.67         3,000          108     4.31         1,500        1,246    83.07        11,581          856
Screen                 98.06         4,297            4     0.12        10,000        9,632    96.32           301        1,404
Calendar             99.76           488          359    75.10           200           48    24.00             0          152
OTR                     100.00         4,096        3,439   100.00      2,000      2,000   100.00         0            0
Tables
  Generic key        99.04      29,297        2,606     9.34         5,000        1,092    21.84           133       42,758
  Single record       93.87        10,000        2,765    28.07           500          337    67.40             0       18,068
Export/import        81.17         4,096          137     3.98         2,000          730    36.50        37,036            0
Exp./Imp. SHM        92.22         4,096        3,301    95.99         2,000        1,996    99.80             0            0
Do i need modify any memory parameters on my system? Please see the memory parameters configured on servers as follows
Program buffer:
Abap/buffersize                  400000           kB
Screen Buffer:
Zcsa/presentation_buffer_area    4400000
Sap/bufdir_entries               10000
Screen buffer
zcsa/presentation_buffer_area    4400000          Byte
Sap/bufdir_entries               10000
Export/import buffer
rsdb/obj/buffersize              4096             kB
rsdb/obj/max_objects             2000
rsdb/obj/large_object_size       8192             Byte
rsdb/obj/mutex_n                 0
Few other :
abap/heap_area_dia              2000000000        Bytes
abap/heap_area_nondia           2000000000        Bytes
abap/heap_area_total            5000000000       Bytes
abap/heaplimit                  40000000         Bytes
em/address_space_MB              512              MB
Thanks & Regards,
Vinod

Answer 1

Hi Every one,
Thanks for all your inputs.
As Suggested we have restarted the production server however identified many swap entries red as fllows( Field  Description- 30,970, intial Records- 26,169, Program Buffer - 71,628, CUA- 30,442, Screen - 826 ) and Tables Generic Key - 389 & Export / Import - 247,144 )
I see that Buffer Hit ration of EXport / Import is 83.93 except this all other buffers are above 99 % .
Below are my system configuration details:
OS: WIN - 2003
SAP Version : ECC 5.0
Main Memory Configured : 6 GB
Paging Memory : 15 GB
Memory Parameters :
rsdb/ntab/ftabsize               30000            kB     Size of field description buffer
rsdb/ntab/entrycount             20000                   Max. number / 2 of table descriptions buffered
FTAB needs about 700 bytes per used entry **
Initial record buffer                                                                              IRBD
rsdb/ntab/irbdsize               6000             kB     Size of initial record buffer
rsdb/ntab/entrycount             20000                   Max. number / 2 of initial records buffered
IRBD needs about 300 bytes per used entry **
Program buffer                                                                                PXA
abap/buffersize                  400000           kB     Size of program buffer
abap/pxa                         shared                  Program buffer mode
  CUA buffer
rsdb/cua/buffersize              3000             kB     Size of CUA buffer
The number of max. buffered CUA objects is always: size / (2 kB)
Generic key table buffer                                                                           TABL
zcsa/table_buffer_area           30000000         Byte   Size of generic key table buffer
zcsa/db_max_buftab               5000                    Max. number of buffered objects
Export/import buffer                                                                              EIBUF
rsdb/obj/buffersize              4096             kB     Size of export/import buffer
rsdb/obj/max_objects             2000                    Max. number of objects in the buffer
rsdb/obj/large_object_size       8192             Byte   Estimation for the size of the largest object
rsdb/obj/mutex_n                 0                       Number of mutexes in Export/Import buffer
Based on the above information, Could some one please help me in tunning the memory parameters ( i.e at what extent i can increase / Decrease ) as i was doing this first time.
Would be much appreciable  if some could throw some light on this issue.
Many Thanks,
Vinod