[Bug 974450] [NEW] irqbalance classifies network interfaces with custom/renamed interfaces as class other

[Daniel Jared Dominguez]

Public bug reported:

The irqbalance daemon classifies network interfaces with non-eth* names
as class "other" instead of class "network". In particular, this affects
any machine with biosdevname enabled (NICs named em* and p*p*).

I have verified this in Precise beta 2. I run "irqbalance --debug" and
grep for the interrupt using "grep em1 /proc/interrupts". grep shows:

  79:       2397       2660          0          0          0          0          0          0          0          0          0          0          0          0          0          0  IR-PCI-MSI-edge      em1-0
  80:        180        181          0          0          0          0          0          0          0          0          0          0          0          0          0          0  IR-PCI-MSI-edge      em1-1
  81:        250          1          0          0          0          0          0          0          0          0          0          0          0          0          0          0  IR-PCI-MSI-edge      em1-2
  82:        249          0          0          0          0          0          0          0          0          0          0          0          0          0          0          0  IR-PCI-MSI-edge      em1-3
  83:        182          3          0          0          0          0          0          0          0          0          0          0          0          0          0          0  IR-PCI-MSI-edge      em1-4
  84:        449       1595          0          0          0          0          0          0          0          0          0          0          0          0          0          0  IR-PCI-MSI-edge      em1-5
  85:        343       1319          0          0          0          0          0          0          0          0          0          0          0          0          0          0  IR-PCI-MSI-edge      em1-6
  86:         26         14          0          0          0          0          0          0          0          0          0          0          0          0          0          0  IR-PCI-MSI-edge      em1-7


irqbalance --debug shows:

Interrupt 84 (class other) has workload 2
Interrupt 80 (class other) has workload 1
Interrupt 86 (class other) has workload 0
Interrupt 85 (class other) has workload 0
Interrupt 83 (class other) has workload 0
Interrupt 82 (class other) has workload 0
Interrupt 81 (class other) has workload 0
Interrupt 79 (class other) has workload 0


The issue is resolved in the latest upstream of irqbalance using the following patch (commit from September 2011):
http://code.google.com/p/irqbalance/source/detail?r=32a7757a031445a48be70e0e815e710b5c54c88e

** Affects: irqbalance (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: biosdevname

-- 
You received this bug notification because you are a member of Ubuntu
Server Team, which is subscribed to irqbalance in Ubuntu.
https://bugs.launchpad.net/bugs/974450

Title:
  irqbalance classifies network interfaces with custom/renamed
  interfaces as class other

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/irqbalance/+bug/974450/+subscriptions