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Commands Reference, Volume 1

bindintcpu Command

Purpose

Assigns a bus interrupt level to be delivered only to the indicated CPUs.

Syntax

bindintcpu Level CPU [ CPU...]

Description

The bindintcpu command lets system administrators direct interrupts from a specific hardware device at the specified bus interrupt Level to a specific CPU number, or sets of CPU numbers. Normally, on multiple CPU systems, hardware device interrupts can be delivered to any running CPU, and the distribution among the CPUs is determined by a pre-defined method. The bindintcpu command lets the system administrator bypass the pre-defined method, and control the interrupts distribution from a specific device to selected CPUs. This command is applicable only on selective hardware types.

If an interrupt level has been bound with certain CPUs, all interrupts coming from that level will be distributed only to specified CPUs until it is re-directed by bindintcpu again. However, interrupts bound to CPU0 cannot be re-directed again. If an interrupt level has been bound to CPU0, it stays on CPU0 until the system is booted again.

Notes:

Examples

  1. To direct all interrupts from bus interrupt level 6 tp CPU1, enter:

    bindintcpu 6 1
  2. To direct all interrupts from buss interrupt level 6 to CPU2 and CPU3, enter:

    bindintcpu 6 2 3

Files

/usr/sbin/bindintcpu Contains the bindintcpu command.

Related Information

The lsattr command.

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