[Asterisk-Users] NIC irq load balancing

Jason Kim
2005-01-07T02:04:46Z

Hi All,

I'm developing an outbound call center with 20 agents.
My configuration is like this.
PRI<----> * <----> NetGear Switch <----> 20
iaxSoftPhone

I'm experincing bad voice quality and long delay.
I'm thinking about several possibilities.

1. NIC load - All NIC irqs process by CPU0.
   I tried irabalance, but no effect.
#cat /proc/interrupts
           CPU0       CPU1
  0:     158232     385091    IO-APIC-edge  timer
  1:          3          0    IO-APIC-edge  keyboard
  2:          0          0          XT-PIC  cascade
  3:         56        271    IO-APIC-edge  serial
  4:         10          0    IO-APIC-edge  serial
  8:          1          0    IO-APIC-edge  rtc
 12:        185          0    IO-APIC-edge  PS/2 Mouse
 14:      20312       2667    IO-APIC-edge  libata
 15:          0          0          XT-PIC  libata
 17:     573544      98848   IO-APIC-level  Intel ICH5
 18:     947385          0   IO-APIC-level  eth0
 21:     790815    4593392   IO-APIC-level  t1xxp
NMI:          0          0
LOC:     543220     543219
ERR:          0
MIS:          0

2. NetGear Switch - I'm using FS-526T Switch, which
has 24 10/100 ports and 2 Gb sorts.
I want to know if this kind of general purpose switch
is not suitable for voip. If so, could you recommand
one?

3. Server - My server is based on ASUS md, 2 Xeon
2.8G, 1GB ram, 1 sata drive. OS is Redhat9.0
CPU's idle status is 70~100.

Regards,
Jason






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