From: Florian Westphal <f...@strlen.de> Date: Wed, 30 Aug 2017 19:24:56 +0200
> Eric reported a performance regression caused by header prediction > removal. > > We now call tcp_ack() much more frequently, for some workloads > this brings in enough cache line misses to become noticeable. > > We could possibly still kill HP provided we find a different > way to suppress unneeded tcp_ack, but given we're late in > the cycle it seems preferable to revert. Indeed, reverting at this point in the game is the best thing to do right now. Applied, thanks.
