mpt, interrupt storm detected, different IRQ

M

menace

Hello

problem
interrupt storm detected

FreeBSD 8.1-RELEASE amd64

-- from /var/log/messages
Code: 
interrupt storm detected on "irq16:"; throttling interrupt source

Code: 
# vmstat -i | awk "/rate|mpt|uhci/"
interrupt                          total       rate
irq16: uhci3 uhci4*               430408        786
irq19: uhci0 uhci1*                   26          0
irq24: mpt0                       375534        686|
Code: 
# mptutil show adapter
mpt0 Adapter:
        Board Name: SAS3801E
    Board Assembly: L3-01123-04E
         Chip Name: C1068E
     Chip Revision: UNUSED
       RAID Levels: none

interrupt storm detected on mpt activity, usb devices is not connected

problem in mpt driver ?
 
Help

problem
Code: 
interrupt storm detected on "irq16:"; throttling interrupt source

FreeBSD 8.2-RELEASE FreeBSD

Code: 
nordea# vmstat -i
interrupt                          total       rate
irq16: atapci0                   2356265       1528


what is mean?
 
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