Messages in this thread | | | From | (Eric W. Biederman) | Subject | Re: [PATCH] i386 IOAPIC: de-fang IRQ compression | Date | Wed, 05 Dec 2007 19:20:52 -0700 |
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"Natalie Protasevich" <protasnb@gmail.com> writes:
> I think we counted them in the order of 1400 external IRQs (actual > ioapics/slots plus possible on-card bridges), and yes numbers for used > IRQs were close to 250. Actual customer configurations could've big > bigger, I don't have such data. > >> In particular is a large NR_IRQS plus dynamic vector allocation >> sufficient for all cases you know about? > > Yes, since x86_64 boxes never had a problem once dynamic vectors were > incorporated.
I was wondering if we could avoid making the vectors per cpu and still be in good shape on x86_32. From your description it looks like we can't quite support everything on x86_32 if we don't do the per cpu vector thing. However we will likely have everything interesting supported.
Eric
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