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2318429 - Memory allocation limit - SDS

Symptom

  • You have questions concerning the memory configuration of SAP HANA Smart Data Streaming (SDS):

    • You have installed SDS SPS12 as a Single Host Installation (HANA and SDS services are on the same host).

    • You are now investigating how to size the system for a Multi-SID setup (several SAP HANA Systems on the same physical server).

    • You want to know how to restrict the maximum memory of the streamingserver process?
      • However, the known parameter "[memorymanager] > allocationlimit", does not work when applied to the streamingserver.ini config file. This is most likely because the process runs outside the "normal" HANA memory management.
      • You were unsuccessful in finding anything similar in the SDS documentation.

    • You would like to know if there an implementation of this parameter available or planned?

    • You would like to know if the parameter "global_allocation_limit" (the parameter that restricts the maximum amount of memory for the whole HANA system), includes the streamingserver?
      • You suspect it does not, since the streamingserver does not show up in the IPMM (Inter Process Memory Management).
      • You have already seen the possibility to restrict the maximum memory of single projects.

    • As an alternative to the "global_allocation_limit" parameter, you would like to know if there is a possibility to set a maximum memory value for all projects globally, and restrict the maximum number of (running) projects?

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Environment

  • SAP HANA Smart Data Streaming SPS12.

  • SLES4SAP4HANA 11.3 (Suse Linux 11.3).

Product

SAP HANA 1.0, platform edition

Keywords

KBA , HAN-SDS , SAP HANA Smart Data Streaming , Problem

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