Re: zerocopy results on GigE

To:	"Andrew Morton" <morton@xxxxxxxxxxxxxxxxxx>
Subject:	Re: zerocopy results on GigE
From:	"David S. Miller" <davem@xxxxxxxxxx>
Date:	Tue, 6 Feb 2001 16:43:56 -0800 (PST)
Cc:	Pekka Pietikainen <pp@xxxxxxxxxxxxxx>, netdev@xxxxxxxxxxx
In-reply-to:	<3A809569.A9313C6F@xxxxxxxxxxxxxxxxxxxxx>
References:	<20010206194919.A633@xxxxxxxxx> <14976.28256.593782.781889@xxxxxxxxxxxxxxx> <3A809569.A9313C6F@xxxxxxxxxxxxxxxxxxxxx>
Sender:	owner-netdev@xxxxxxxxxxx

Andrew Morton writes:
 > "David S. Miller" wrote:
 > > 
 > > Strange, cpu usage is close to nothing for sendfile cases yet full
 > > bandwidth is not obtained.
 > 
 > Is it possible that the receiver is going into discard,
 > and TCP is backing off?

Or even worse, the Gige cards are emitting flow control frames.

Later,
David S. Miller
davem@xxxxxxxxxx

<Prev in Thread]	Current Thread	[Next in Thread>
zerocopy results on GigE, Pekka Pietikainen Re: zerocopy results on GigE, Ben Greear Re: zerocopy results on GigE, Pekka Pietikainen Re: zerocopy results on GigE, David S. Miller Re: zerocopy results on GigE, Jes Sorensen Re: zerocopy results on GigE, Andrew Morton Re: zerocopy results on GigE, David S. Miller <= Re: zerocopy results on GigE, Andrew Morton Re: zerocopy results on GigE, Andi Kleen Re: zerocopy results on GigE, Pekka Pietikainen Re: zerocopy results on GigE, Pekka Pietikainen Re: zerocopy results on GigE, kuznet Re: zerocopy results on GigE, Benjamin C.R. LaHaise Re: zerocopy results on GigE, kuznet Re: zerocopy results on GigE, Jes Sorensen Re: zerocopy results on GigE, kuznet Re: zerocopy results on GigE, Pekka Pietikainen

Previous by Date:	Re: zerocopy results on GigE, Andrew Morton
Next by Date:	Re: zerocopy results on GigE, Andrew Morton
Previous by Thread:	Re: zerocopy results on GigE, Andrew Morton
Next by Thread:	Re: zerocopy results on GigE, Andrew Morton
Indexes:	[Date] [Thread] [Top] [All Lists]