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3017684 - High spinlock contention in Sysobject cache when execute LWP - SAP ASE

Symptom

  • High spinlock contention in sysobjects named cache when execute large number of dynamic light weigth procedure (LWP).
  • The sybmon sample output show many threads in a code path that contain the following functions:

    pausenonatomic
    lock_do_logical
    sdes_scan_setup
    lookup__sysobjects
    getobjrow
    getobjrow_byname
    lookup_object_with_protect
    s_normalize
    sequencer
    tdsrecv__dynexec
    tdsrecv_dynamic


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Environment

  • Adaptive Server Enterprise (ASE) 16 SP04
  • Adaptive Server Enterprise (ASE) 16 SP03 PL07
  • Adaptive Server Enterprise (ASE) 16 SP02 PL09
  • Adaptive Server Enterprise (ASE) 15.7 SP141

Product

SAP Adaptive Server Enterprise 15.7 ; SAP Adaptive Server Enterprise 16.0

Keywords

KBA , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , Bug Filed

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