[vortex-bug] Tx int. mitigation
Thu, 14 Dec 2000 18:59:33 +0100 (CET)
On Thu, 14 Dec 2000, Donald Becker wrote:
> We need some way to scavenge Tx skbuffs in a timely manner, even if we are
> not receiving packets.
I see several solutions:
- do it while processing other (mostly Rx) interrupts
- use the Countdown timer to generate an interrupt periodically, but not
very fast, say, once a second
- use a timer/kernel thread to come back and check for packets in the Tx
> The protocol layer uses the skbuff-is-free information....
How precise the timing should be ? Is it OK to keep the skbuff alocated
one second (or so) more after it was transmitted ?
> ... Leaving already
> transmitted skbuffs on the transmit queue will cause mysterious performance
The upper levels are a bit of mistery to me. Can you elaborate on this ?
> Additional issue: Debugging is easier if the Tx statistics are correct.
If we do it right, we don't need debugging 8-))
Still, my original question about Tx mitigation remained unanswered...
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