From: Eric Dumazet <eduma...@google.com> Date: Fri, 2 Oct 2015 11:43:22 -0700
> TCP listener refactoring : this is becoming interesting ! > > This patch series takes the steps to use normal TCP/DCCP ehash > table to store SYN_RECV requests, instead of the private per-listener > hash table we had until now. > > SYNACK skb are now attached to their syn_recv request socket, > so that we no longer heavily modify listener sk_wmem_alloc. > > listener lock is no longer held in fast path, including > SYNCOOKIE mode. > > During my tests, my server was able to process 3,500,000 > SYN packets per second on one listener and still had available > cpu cycles. > > That is about 2 to 3 order of magnitude what we had with older kernels. > > This effort started two years ago and I am pleased to reach expectations. > > We'll probably extend SO_REUSEPORT to add proper cpu/numa affinities, > so that heavy duty TCP servers can get proper siloing thanks to multi-queues > NIC. This looks amazing, series applied, thanks Eric! -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
