Memory Requirements of Each Work Process

[Former Member]

Dear Experts,

We would like to know, What is the minimum memory requirements for each SAP Work process?

SAP:R3 4.7

SQL2000DB [1.5GB] memory allocatted.

For PHYS_MEMSIZE = 1.5[Profile] memory, maximum how much workprocess allocation can be possible?.

Is there any SAP note says about maintain workprocess against Memory.

Thanks

Thiru

[Former Member]

Hello Selvan,

Each dialog work process requires 50 to 60 MB

please have a look at http://scn.sap.com/thread/1855626

Also check snote:

Note 39412 - How many work processes should be configured?

regards

Alen

[Former Member]

Hi Kishore, Atul,Alen,

[Existing memory]

SQL2000DB [1.5GB] memory allocatted.

  For PHYS_MEMSIZE = 1.5[Instance profile]

Vitual memory : 12GB.

Windows2003/SQL2000 Db

Work process : 28 number.

We ran the following cmd and the resutls as below.

sappfpar check pf=[Instance Profile]

================================================================

Total Nr of shared segments required.....:         41

Shared memory segment size required min..:  638976000 ( 609.4 MB)

Swap space requirements estimated

================================================

Shared memory....................: 1151.6 MB

Processes........................:  216.7 MB

Extended Memory .................: 1431.0 MB

------------------------------------------------

Total, minimum requirement.......: 2801.3 MB

Process local heaps, worst case..: 1901.3 MB

Total, worst case requirement....: 4711.6 MB

In this case[above results] how much minimum Physical [RAM] required for my environement.

Thanks

Thiru.

[AtulKumarJain]

Hi Thiru,

As per above update 5GB will be sufficient for it.

Best Regards,

Atul

[Former Member]

yup

4 to 6gb ram is well enough to run at your current requirements:

Also an extra tip to ensure smooth running of sap systems:

usally end users accesing sap system complaints even when ram size is prefect:

So in that case have a look at your network bandwidth requirements before moving sap system to live:

As the number of end users increases the bandwidth req also increases calculated by the below formula:

C = X*N*D*0.25

where C = bandwidth in kbps needed for the sapgui,

             x=amount of data per dialog step in kb

             n = Number of active users

             D = Average no of dialog steps per minute per user

.25 =numerical factor(include conversion, some safety factors)

eg:  C= 5*25*3*0.25

         C=93.5 approx 100kbs bandwidth needed for fast response

thanks

alen

[AtulKumarJain]

Hi ,

There is sap note for it.

SAP Note No. 386605 SAP Memory Management for Linux (32-bit)

SAP Note No. 941735 SAP memory management for 64-bit Linux systems

SAP Note No. 88416 Zero administration memory management for the ABAP

Best Regards,

Atul

[Former Member]

Hi Thiru,

• please let me know your environment.
• Each work process can consume up to 75 to 150 MB and it may extend based on the values of memory Parameters.

have a look into the following links:

• http://help.sap.com/saphelp_nw73ehp1/helpdata/en/49/3d18e913301ec6e10000000a42189b/content.htm
• http://help.sap.com/saphelp_erp60_sp/helpdata/en/3c/05863c6800924fe10000000a114084/content.htm
• http://help.sap.com/saphelp_nw04s/helpdata/en/84/7ed384d81f11d188be0000e83539c3/content.htm

Thanks

Kishore Cherukumalla