> In message <[EMAIL PROTECTED]>, Mike Smith writes:
> >> fxp0: The Intel driver is by far the highest preformance model,
> >> beats the 3com (second best) hands down with much lower CPU
> >> overhead.
> >
> >Do you actually have any numbers to quantify this? There's nothing in
> >the driver architecture nor any of my testing that would suggest this is
> >actually the case at this point.
>
> The FreeBSD fxp driver does a lot to reduce the number of transmit
> interrupts; only 1/120 of transmitted packets result in interrupts. See
> the code relating to FXP_CXINT_THRESH.
>
> Assuming an even balance of transmitted and received packets, this should
> reduce the total number of interrupts by nearly 50%. I don't know if
> drivers for other cards do (or even can) use this approach.
This is why I'm asking for real information here; so far all I'm hearing
is folklore. The xl driver, for example, does both transmit and receive
interrupt coalescing, which should make it superior again, right? 8(
--
\\ Give a man a fish, and you feed him for a day. \\ Mike Smith
\\ Tell him he should learn how to fish himself, \\ [EMAIL PROTECTED]
\\ and he'll hate you for a lifetime. \\ [EMAIL PROTECTED]
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