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2109713 - Timeslice error with a Page Fault error message - SAP ASE

Symptom

  • The ASE errorlog contains messages like this:

timeslice -501, current process infected at <hex address> (<function name>)
This Adaptive Server process has had 342281 major and 0 minor page faults since boot.

timeslice -2133, current process infected at ffffffff7c7dbf60 (_so_accept+0x8)
Listener with protocol tcp, host dspwmp5, port 10000 has been terminated due to timeslice error. You can start a new listener on the same port.
This Adaptive Server process has had 4231 major and 0 minor page faults since boot.

  •   These messages can also show up in sp_sysmon reports even without a timeslice and stacktrace in the ASE errorlog:

 Page Faults at OS          per sec   per xact     count   % of total
 -------------------------          --------     ----------     --------     -------
  Minor Faults                        0.6           0.4          69      100.0 %
  Major Faults                        0.0           0.0            0         0.0 %
 -------------------------          --------    ----------      --------     -------
 Total Page Faults                 0.6           0.4          69      100.0 %

  • The following stacktrace may be reported

**** Saved signal context (0x0x0000000149fa9740): ****
uc_flags: 0x1, uc_link: 0x(nil)
uc_sigmask: 0x416000 0xa 0xfffffffa 0x4042
uc_stack: ss_sp: 0x(nil), ss_size: 0x0, ss_flags: 0x2
General Registers (uc_mcontext.gregs):
(atomic_try+0x2)


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Environment

SAP Adaptive Server Enterprise (ASE) all versions

Product

SAP Adaptive Server Enterprise all versions

Keywords

swap , swapping , virtual memory , stack trace , RAM , lock shared memory, atomic_try , sparc_lock , so_accept, ram pages, allocate, poor performance, spinlock, memory contention, slow disk response , KBA , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , BC-DB-SYB , SAP Business Suite on Sybase ASE Database Platform , Problem

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