Very High Interrupt Count and System Time on an AMD cpu

(Doc ID 1500424.1)

Last updated on JULY 29, 2016

Applies to:

Solaris Operating System - Version 10 8/11 U10 to 10 8/11 U10 [Release 10.0]
Oracle Solaris on x86-64 (64-bit)


 A very high number of interrupts seen on a single cpu and high system time on the same cpu, for example in mpstat.

Only 'hpet_isr' has level 14 interrupts assigned to only cpu0.



This issue affected systems with AMD cpus running Solaris 10 with kernel patches 147441-11 to 147441-18


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