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2298190 - Timeslice on asynchronous IO calls - SAP ASE

Symptom

  • Errorlog reports timeslice:

timeslice -501, current process infected

  • With a stacktrace containing functions related to asynchronous IO calls
    • below a typical example, but other calls may be seen:

aiowrite
aioread
kaio__daiostart
basis_daiostart
basis_dstart
dstartio
udstartio

  • ASE appears hung for duration of timeslice or longer and can be hung permanently
  • If ASE is accessable, it can show many logins in "MAINTENANCE TOKEN" status


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Environment

  • Sybase Adaptive Server Enterprise (ASE) 12.5.x
  • Sun Solaris OS

Product

SAP Adaptive Server Enterprise 12.5

Keywords

Sun Solaris, OS patches, performance , asynch , IO , I/O , async IO , KBA , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , BC-SYB-ASE-CE , ASE Cluster Edition (Standalone) , Problem

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