On 12/08/2016 07:30 AM, Eric Dumazet wrote:
On Thu, 2016-12-08 at 10:46 +0100, Jesper Dangaard Brouer wrote:
Hmmm... I'm not thrilled to have such heuristics, that change memory
behavior when half of the queue size (sk->sk_rcvbuf) is reached.
Well, copybreak drivers do that unconditionally, even under no stress at
all, you really should complain then.
Isn't that behaviour based (in part?) on the observation/belief that it
is fewer cycles to copy the small packet into a small buffer than to
send the larger buffer up the stack and have to allocate and map a
replacement?
rick jones
