[LAU] rtirq not setting as expected

I attempted to have one of my ethernet interfaces increased in priority
using an entry in the rtirq configuration file, but it did not seem to
work as seen below in the rtirq status. I expected eth2 to get set to
priority 70, but it is at the default of 50 along with all the other
non-sound interrupt handlers. Any help in understanding why would be
appreciated.

Also, is there any benefit to preventing the driver loading for the unused
audio section of my video card? The video card has an audio adapter that
only outputs over the hdmi port, which I am not using, but it gets set to
a high priority just like my ice card. Any concern with that, or just
ignore it?

--
thanks,
Chris Caudle
Content of /etc/sysconfig/rtirq:
# IRQ thread service names
# (space separated list, from higher to lower priority).
RTIRQ_NAME_LIST="rtc snd usb i8042 eth2"
# Highest priority.
RTIRQ_PRIO_HIGH=90
# Priority decrease step.
RTIRQ_PRIO_DECR=5
# Whether to reset all IRQ threads to SCHED_OTHER.
RTIRQ_RESET_ALL=0
# On kernel configurations that support it,
# which services should be NOT threaded
# (space separated list).
RTIRQ_NON_THREADED="rtc snd"
# Process names which will be forced to the
# highest realtime priority range (99-91)
# (space separated list, from highest to lower priority).
# RTIRQ_HIGH_LIST="timer"
--------------------------------
result of rtirq status:
$ /etc/rc.d/init.d/rtirq status
  PID CLS RTPRIO  NI PRI %CPU STAT COMMAND
  112 FF      90   - 130  0.0 S    irq/8-rtc0
  677 FF      85   - 125  0.0 S    irq/69-snd_hda_
  713 FF      85   - 125  0.0 S    irq/20-snd_ice1
  104 FF      80   - 120  0.0 S    irq/10-ohci_hcd
  106 FF      79   - 119  0.0 S    irq/10-ohci_hcd
  109 FF      75   - 115  0.0 S    irq/1-i8042
  108 FF      74   - 114  0.0 S    irq/12-i8042
   41 FF      50   -  90  0.0 S    irq/9-acpi
  102 FF      50   -  90  0.0 S    irq/10-ehci_hcd
  225 FF      50   -  90  0.0 S    irq/64-radeon
  329 FF      50   -  90  0.0 S    irq/14-pata_ser
  330 FF      50   -  90  0.0 S    irq/15-pata_ser
  332 FF      50   -  90  0.0 S    irq/11-sata_svw
  345 FF      50   -  90  0.0 S    irq/18-firewire
  350 FF      50   -  90  0.0 S    irq/65-cciss0
 1217 FF      50   -  90  0.0 S    irq/16-eth0
 1300 FF      50   -  90  0.0 S    irq/70-eth1
 1374 FF      50   -  90  0.0 S    irq/71-eth2
    3 FF       1   -  41  0.1 S    ksoftirqd/0
   18 FF       1   -  41  0.1 S    ksoftirqd/1
   25 FF       1   -  41  0.0 S    ksoftirqd/2
   31 FF       1   -  41  0.0 S    ksoftirqd/3
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