interrupt storm detected

[FRLinux]

Hello All,

I have a server running FreeBSD 8.2-RC1 with a 3ware 9650 24ports
controller. Every now and then I am seeing the interrupt storm
message. I have increased the following according to the list:
hw.intr_storm_threshold=4000 but it still happens. Any advice?


interrupt storm detected on "irq16:"; throttling interrupt source
interrupt storm detected on "irq16:"; throttling interrupt source
fsync: giving up on dirty
0xffffff0007c7e000: tag devfs, type VCHR
    usecount 1, writecount 0, refcount 1133 mountedhere 0xffffff00079f9000
    flags ()
    v_object 0xffffff0007be40d8 ref 0 pages 12087
    lock type devfs: EXCL by thread 0xffffff0007504000 (pid 7)
	dev da0.journal
GEOM_JOURNAL: Cannot suspend file system /mnt/backups (error=35).
fsync: giving up on dirty
0xffffff0007c7e000: tag devfs, type VCHR
    usecount 1, writecount 0, refcount 1386 mountedhere 0xffffff00079f9000
    flags ()
    v_object 0xffffff0007be40d8 ref 0 pages 13771
    lock type devfs: EXCL by thread 0xffffff0007504000 (pid 7)
	dev da0.journal
GEOM_JOURNAL: Cannot suspend file system /mnt/backups (error=35).
fsync: giving up on dirty
0xffffff0007c7e000: tag devfs, type VCHR
    usecount 1, writecount 0, refcount 1578 mountedhere 0xffffff00079f9000
    flags ()
    v_object 0xffffff0007be40d8 ref 0 pages 20487
    lock type devfs: EXCL by thread 0xffffff0007504000 (pid 7)
	dev da0.journal
GEOM_JOURNAL: Cannot suspend file system /mnt/backups (error=35).
fsync: giving up on dirty
0xffffff0007c7e000: tag devfs, type VCHR
    usecount 1, writecount 0, refcount 571 mountedhere 0xffffff00079f9000
    flags ()
    v_object 0xffffff0007be40d8 ref 0 pages 20407
    lock type devfs: EXCL by thread 0xffffff0007504000 (pid 7)
	dev da0.journal
GEOM_JOURNAL: Cannot suspend file system /mnt/backups (error=35).
interrupt storm detected on "irq16:"; throttling interrupt source
fsync: giving up on dirty
0xffffff0007c7e000: tag devfs, type VCHR
    usecount 1, writecount 0, refcount 2331 mountedhere 0xffffff00079f9000
    flags ()
    v_object 0xffffff0007be40d8 ref 0 pages 27599
    lock type devfs: EXCL by thread 0xffffff0007504000 (pid 7)
	dev da0.journal
GEOM_JOURNAL: Cannot suspend file system /mnt/backups (error=35).
fsync: giving up on dirty
0xffffff0007c7e000: tag devfs, type VCHR
    usecount 1, writecount 0, refcount 2681 mountedhere 0xffffff00079f9000
    flags ()
    v_object 0xffffff0007be40d8 ref 0 pages 20055
    lock type devfs: EXCL by thread 0xffffff0007504000 (pid 7)
	dev da0.journal
GEOM_JOURNAL: Cannot suspend file system /mnt/backups (error=35).
fsync: giving up on dirty
0xffffff0007c7e000: tag devfs, type VCHR
    usecount 1, writecount 0, refcount 2690 mountedhere 0xffffff00079f9000
    flags ()
    v_object 0xffffff0007be40d8 ref 0 pages 19631
    lock type devfs: EXCL by thread 0xffffff0007504000 (pid 7)
	dev da0.journal
GEOM_JOURNAL: Cannot suspend file system /mnt/backups (error=35).
interrupt storm detected on "irq16:"; throttling interrupt source


Thanks!
Steph