interrupt coalescing / polling

Donald Becker
Fri Feb 26 00:35:23 1999

On Thu, 25 Feb 1999, John Plevyak wrote:

> Does the Intel EthreExpress Pro do interrupt coalescing and
> does the driver support this?

The "firmware" hidden inside the chip supposedly has a sophisticated
interrupt optimization for receives, but this is hidden from the driver.
I've never done cycle-by-cycle timings to confirm this.

The Tx routine avoids generating interrupts, except when it empties the Tx

Donald Becker
USRA-CESDIS, Center of Excellence in Space Data and Information Sciences.
Code 930.5, Goddard Space Flight Center,  Greenbelt, MD.  20771