Subject: Re: DECchip 21143 and the tlp driver.
To: Charles M. Hannum <>
From: Jason Thorpe <>
List: current-users
Date: 11/02/1999 18:58:36
On 02 Nov 1999 21:51:56 -0500 (Charles M. Hannum) wrote:

 > > and every boot, as soon as any significant network traffic occurs, it
 > > gets such messages, first 96|256, then 128|512, then 160|1024, then
 > > store-and-forward (at which point, of course, it stops).
 > FYI, the recent fix to Alpha soft interrupt handling might improve
 > this.

Actually, the soft interrupt stuff wouldn't have anything to do
with this.  Those messages are a direct result of Tx DMA FIFO
underruns, which is directly related to the (visible to the Tulip)
throughput of the PCI bus, and not related at all to the speed
at which Tulip hardware interrupts are handled.

        -- Jason R. Thorpe <>