From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752774AbbJEKUL (ORCPT ); Mon, 5 Oct 2015 06:20:11 -0400 Received: from shards.monkeyblade.net ([149.20.54.216]:38861 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752423AbbJEKUJ (ORCPT ); Mon, 5 Oct 2015 06:20:09 -0400 Date: Mon, 05 Oct 2015 03:35:47 -0700 (PDT) Message-Id: <20151005.033547.905125073688788587.davem@davemloft.net> To: sowmini.varadhan@oracle.com Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, rds-devel@oss.oracle.com, ajaykumar.hotchandani@oracle.com, igor.maximov@oracle.com, santosh.shilimkar@oracle.com, sergei.shtylyov@cogentembedded.com Subject: Re: [PATCH v2 net-next 0/3] RDS: RDS-TCP perf enhancements From: David Miller In-Reply-To: References: X-Mailer: Mew version 6.4 on Emacs 23.4 / Mule 6.0 (HANACHIRUSATO) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.5.12 (shards.monkeyblade.net [149.20.54.216]); Mon, 05 Oct 2015 03:20:09 -0700 (PDT) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Sowmini Varadhan Date: Wed, 30 Sep 2015 16:54:06 -0400 > A 3-part patchset that (a) improves current RDS-TCP perf > by 2X-3X and (b) refactors earlier robustness code for > better observability/scaling. > > Patch 1 is an enhancment of earlier robustness fixes > that had used separate sockets for client and server endpoints to > resolve race conditions. It is possible to have an equivalent > solution that does not use 2 sockets. The benefit of a > single socket solution is that it results in more predictable > and observable behavior for the underlying TCP pipe of an > RDS connection > > Patches 2 and 3 are simple, straightforward perf bug fixes > that align the RDS TCP socket with other parts of the kernel stack. > > v2: fix kbuild-test-robot warnings, comments from Sergei Shtylov > and Santosh Shilimkar. Series applied to net-next, thanks.