- Problem Statement/Title: SF15K Troubleshooting Article:

  Interrupt not serviced messages on System Controller


- Symptoms:

Warning messages in /var/adm/messages file on system controller (SC).

Example : 

messages.3:Jun  4 14:11:18 l82ba249 unix: [ID 882636 kern.warning] WARNING: interrupt 
level 9 not serviced
messages.3:Jun  4 14:11:45 l82ba249 unix: [ID 882636 kern.warning] WARNING: interrupt 
level 12 not serviced
messages.3:Jun  4 14:11:48 l82ba249 unix: [ID 882636 kern.warning] WARNING: interrupt 
level 12 not serviced
            

- Troubleshooting:

Examine /var/adm/messages file to see above error messages.

"interrupt level n not serviced"  means an interrupt was posted, but there wasn't
a device to claim it.

The error is generated when the interrupt handlers check the hardware state and
decide that the hardware does not indicate an interrupt to be handled. 

The standard system controller is configured for interrupt levels 6, 9, 12 and 15.

Interrupt Level             Device

    4                       scsi
    6                       network (e.g. ethernet)
    9                       gchip or echip
    12(Hex c)               ebus serial driver
    15(Hex e)               ebus (power and i2c)
    
As of this writing, "not serviced" messages for interrupts 4 and 15 have not been seen in 
any system message files.

Interrupt level 6 (network) error has been addressed by the latest eri driver in Solaris[TM] 5.8 
release. 

Interrupt level 9 (gchip) error is reported in bug #4725348, but no root cause has been 
found.
 
Interrupt level 12 (Serial connection) errors are noticed often.  You may look at the 
console log or /var/adm/messages to see any messages reported with the serial line 
connection. 
 
Please report to CPRE if you see any errors pointing to interrupt level 15.

- Resolution:

No action is required as these messages are not a cause of any failures.

You may check the other errors in messages file to see if there is problem on the bus or 
network.  In the current system controller with the standard configuration, these errors can 
be ignored.

- Summary of part number and patch ID's 

None

- References and bug IDs

bugID  #4725348 

- Additional background information:

None

- Meta-Data/Problem categorization:

Product/Platform:  SF12K/SF15K
Category:

- Keywords

interrupt level messages starcat SF12K SF15K