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Spin locks and suspend locks

Spin locks allow programs to serialize access to resources within a single MVS system across several address spaces.

Suspend locks allow programs to serialize access to resources that are:

  • assigned to a particular address space (local lock), or
  • related to more than one address space (global lock)

To see if any locks are held excessively, these questions and views can be helpful.

To answer the question

Use this view

Are there any spin locks being held excessively? Are jobs being delayed because of spinning while waiting for a spin lock?

LOKSPN

LOKSPNKZ

How often do jobs hold a local suspend lock or a global suspend lock?

LOKSUS

LOKSUSKZ

Related topic

System-resource-utilization


 

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