ABAP tunning. WP memory weird case

[Former Member]

Dear experts,

I have a netweaver 7.00 with a kernel 7.20.

The weird thing is that we have different WP memory consumption between central instance and dialog instance.

In the central instance I have this memory consumption (ST02 > detail analisis > storage):

Roll area          78.125   K Cursor Cache        2.000   K

Paging buffer       1.200   K d+w user bss            0   K

Short storage       3.125   K d+w user data           0   K

Total              84.450   K

While in the dialog instance we have a different memory consumption (ST02 > detail analisis > storage):

Roll area          78.125   K Cursor Cache        2.000   K

Paging buffer       1.200   K d+w user bss       51.346   K

Short storage       3.125   K d+w user data       2.388   K

Total             138.184   K

Does anyone know what is the meaning of d+w user bss???

We have the same parameters in the central instance and the dialog instances, so I don't understand this difference.

thanks.

regards,

Filipe

[former_member192616]

Hi,

not sure but i think it is some global or static data:

http://en.wikipedia.org/wiki/Data_segment#BSS

http://en.wikipedia.org/wiki/.bss

is the operating system on the instances the same?

is the version of the os on the instances the same?

I have some mixed environment here... on Windows it looks like your

first output  on Linux like on your second... i doubt that the 0 for bss  is correct....

Kind regards,

Hermann

[Former Member]

Hello Hermann,

Thanks for your answer. The operating system is the same in the central instance and dialog instance.

It's red hat EL 6.3.

In central instance the WP memory is different than in dialog instance. I have other systems in AIX and this doesn't occur... is this a linux issue? weird!!!

regards,

Filipe Vasconcelos

[Former Member]

Hi Jose,

I know this is an old post, but I am curious if you ever solved this problem. My client is running RHEL 5.9 and we have the same exact problem as you described.

Here's our memory consumption details in ST02 > detail analisis > storage

Roll area           6,348   K Cursor Cache        2,000   K

Paging buffer       1,200   K d+w user bss       51,346   K

Short storage       3,906   K d+w user data       2,388   K

Total              67,188   K

Thanks,

Bill