Failed to set the CPU affinity for hpet IRQ on Red Hat Linux.

Solution In Progress - Updated -

Issue

When our program start, it will set CPU affinity for IRQ, but for the IRQ related , it can’t be modified and will print the error information below.

For the red hat Linux earlier than current version(6.4), it won’t register hpet related IRQ when OS starting up. But there is such IRQ on current version red hat Linux.

Here is the error information below:

Set CPU affinity 0000001e for IRQ 74  hpet2
/usr/sbin/rcmdf-up: line 93: echo: write error: Input/output error
Set CPU affinity 0000001e for IRQ 75  hpet3
/usr/sbin/rcmdf-up: line 93: echo: write error: Input/output error
Set CPU affinity 0000001e for IRQ 76  hpet4
/usr/sbin/rcmdf-up: line 93: echo: write error: Input/output error
Set CPU affinity 0000001e for IRQ 77  hpet5
/usr/sbin/rcmdf-up: line 93: echo: write error: Input/output error
Set CPU affinity 0000001e for IRQ 78  hpet6
/usr/sbin/rcmdf-up: line 93: echo: write error: Input/output error

Environment

  • Red Hat Enterprise Linux 6.4.z kernel version 2.6.32-358.14.1.el6.x86_64
  • HP ProLiant BL460c Gen8, BIOS I31 09/08/2013

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