Messages in this thread | | | Date | Tue, 13 Feb 2001 17:35:56 -0800 (PST) | From | Ion Badulescu <> | Subject | Re: [PATCH] starfire reads irq before pci_enable_device. |
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On 12 Feb 2001, Jes Sorensen wrote:
> Ion> Yes, but I'd rather let people turn off the always-copy behavior > Ion> by simply changing rx_copybreak. The unused code is not really > Ion> that much of a deal, it's only a few lines. > > However, it is in the hot path code where it hurts the most.
I couldn't measure any difference, really. And for one extra branch, I really wouldn't expect a measurable difference..
Not even defining final_version, which removes a *lot* more conditional branches from the hot path, makes any measurable difference in the CPU utilization.
Ion
-- It is better to keep your mouth shut and be thought a fool, than to open it and remove all doubt.
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