Re: [RFC net-next 0/6] tcp: remove prequeue and header prediction

2017-07-31 Thread David Miller
From: Eric Dumazet Date: Mon, 31 Jul 2017 13:22:22 -0700 > On Mon, Jul 31, 2017 at 1:04 PM, Yuchung Cheng wrote: >> by the time these devices use 4.12 kernels they are likely powerful >> enough to make header prediction irrelevant... > > Also note that

Re: [RFC net-next 0/6] tcp: remove prequeue and header prediction

2017-07-31 Thread Eric Dumazet
On Mon, Jul 31, 2017 at 1:04 PM, Yuchung Cheng wrote: > by the time these devices use 4.12 kernels they are likely powerful > enough to make header prediction irrelevant... Also note that TCP stack complexity has increased a lot, I seriously doubt anyone could notice any

Re: [RFC net-next 0/6] tcp: remove prequeue and header prediction

2017-07-31 Thread Yuchung Cheng
On Sat, Jul 29, 2017 at 7:25 PM, Neal Cardwell wrote: > On Thu, Jul 27, 2017 at 7:31 PM, Florian Westphal wrote: >> This RFC removes tcp prequeueing and header prediction support. >> >> After a hallway discussion with Eric Dumazet some >>

Re: [RFC net-next 0/6] tcp: remove prequeue and header prediction

2017-07-29 Thread Neal Cardwell
On Thu, Jul 27, 2017 at 7:31 PM, Florian Westphal wrote: > This RFC removes tcp prequeueing and header prediction support. > > After a hallway discussion with Eric Dumazet some > maybe-not-so-useful-anymore TCP stack features came up, HP and > Prequeue among these. > > So this RFC

Re: [RFC net-next 0/6] tcp: remove prequeue and header prediction

2017-07-29 Thread David Miller
From: Florian Westphal Date: Fri, 28 Jul 2017 01:31:11 +0200 > This RFC removes tcp prequeueing and header prediction support. > > After a hallway discussion with Eric Dumazet some > maybe-not-so-useful-anymore TCP stack features came up, HP and > Prequeue among these. > > So

Re: [RFC net-next 0/6] tcp: remove prequeue and header prediction

2017-07-28 Thread Yuchung Cheng
On Thu, Jul 27, 2017 at 4:31 PM, Florian Westphal wrote: > > This RFC removes tcp prequeueing and header prediction support. > > After a hallway discussion with Eric Dumazet some > maybe-not-so-useful-anymore TCP stack features came up, HP and > Prequeue among these. > > So this

[RFC net-next 0/6] tcp: remove prequeue and header prediction

2017-07-27 Thread Florian Westphal
This RFC removes tcp prequeueing and header prediction support. After a hallway discussion with Eric Dumazet some maybe-not-so-useful-anymore TCP stack features came up, HP and Prequeue among these. So this RFC proposes to axe both. In brief, TCP prequeue assumes a single-process-blocking-read