[CentOS] back to: kernel: do_IRQ: 2.96 No irq handler for vector (irq -1)

Thu Aug 15 15:35:43 UTC 2013
James A. Peltier <jpeltier at sfu.ca>

----- Original Message -----
| I asked here a week or so ago, and referenced an older bug, but
| haven't
| seen any comments. Googling, I see others asking about the same.
| Datum:
| *every* one I've found is like this: they're all HP DL580's or
| DL380's, or
| such.
| This is being used for heavy-duty scientific computing. Does anyone
| know
| if it *will* it seriously affect throughput speed if I turn off
| irqbalance?
| It's running 6.4, btw.
|         mark

That really depends on the type of computing.  If it's memory or CPU intensive computing it should have little to no affect. However, if you are doing heavy I/O intensive operations, more specifically network intensive, then yes, disabling irqbalance will have a fairly significant affect on performance for those operations.

James A. Peltier
Manager, IT Services - Research Computing Group
Simon Fraser University - Burnaby Campus
Phone   : 778-782-6573
Fax     : 778-782-3045
E-Mail  : jpeltier at sfu.ca
Website : http://www.sfu.ca/itservices

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