Donald Becker wrote:
>
> [ big snip. I'll follow up on linux-vortex ]
>
> 4000 PCI cycles is a *very* long time. Ages. It should only 0 to 2 PCI
> cycles to queue a packet.
Alas I seem to have lost the ability to reproduce[*].
With four Linux boxes on a 10bT LAN the limit of 2,000 was exceeded a
few times a minute with a particular test case. With my current setup
of three Linux boxes and one NT, the best I can get is 240 loops, in the
DownStall in boomerang_start_xmit(). 3c905B. Still much higher than
we expect.
More tomorrow....
-- -akpm-[*] The timeout problem, that is.
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Mon May 15 2000 - 21:00:21 EST