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What does "d+w user bss" mean and is there a parameter that controls this value?

We're trying to reduce the memory footprint of a couple of our landscapes, and we found that the "d+w user bss" area takes up over 80% of the memory used in each work process. Why is it such a large part of each work process? Is there any way to reduce the size of this area, by a user parameter or otherwise?

Thanks very much.

Gordon

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2 Answers

  • Oct 23, 2017 at 10:52 PM

    Hello Gordon,

    Which is the operating system in use?

    We need to be careful with which command we use to check the memory usage of the work processes, as some commands include the shared memory areas (memory areas that are used by all the work processes at the same time). "ps" could be misleading, for example.

    You can refer to this WIKI page for more details.

    Please keep in mind that each work process will use about 100MB - 300MB (depending on the SAP kernel release) just to be "alive" and running, and there is no way to reduce this size.

    Best regards,

    Isaías

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  • Nov 14, 2017 at 03:51 PM

    Thanks Isaias. Sorry to be tardy in acknowledging your answer -- for some reason, I wasn't informed via e-mail that you'd responded. In any case, your Wiki page gives some relatively new parameters I'm not familiar with -- we'll need to check those out.

    Gordon

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