On Sat, 2007-06-30 at 16:55 +0200, Krzysztof Oledzki wrote: > Hello, > > It seems that IRQ handling is somehow different between i386 and x86_64. > > In my Dell PowerEdge 1950 is it possible to enable interrupts spreading > over all CPUs. This a single CPU, four CORE system (Quad-Core E5335 Xeon) > so I think that interrupts migration may be useful. Unfortunately, it > works only with 32-bit kernel. Booting it with x86_64 leads to situation, > when all interrupts goes only to the first cpu matching a smp_affinity > mask.
arguably that is the most efficient behavior... round robin of interrupts is the worst possible case in terms of performance are you using irqbalance ? (www.irqbalance.org) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/