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sys_attrs_fta(5)
NAME
  sys_attrs_fta - fta subsystem attributes

DESCRIPTION
  The fta (fta) kernel subsystem is used by the Fiber Distributed Data
  Interface (FDDI) adapters.  Refer to the sys_attrs(5) reference page for an
  introduction to the topic of kernel subsystem attributes.

  minimal_isr
      A value that enables (1) or disables (0) the awakening of a separate
      thread to handle interrupt service work.

      The processing of received frames or of completed transmits is
      typically performed by the driver's interrupt service routine.  If
      minimal_isr is enabled, the interrupt service routine does not do the
      processing.  Instead, it awakens another thread to do the processing.
      The benefit is that the new thread can run on any other processor,
      thereby freeing the master processor for other interrupt processing and
      other tasks.  While this may improve overall system performance, there
      will be an increased latency in the processing of received FDDI frames.

      If minimal_isr is disabled, the interrupt service routine processes all
      received frames and completed transmits.	This can delay the master
      processor from servicing other I/O interrupts and can lead to overall
      system performance degradation.  However, the latency for handling
      received FDDI frames will be very low.

      Default value: 1 (enabled)

SEE ALSO
  sys_attrs(5)

Index for Section 5

Alphabetical listing for S

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