From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754925AbbI3XZY (ORCPT ); Wed, 30 Sep 2015 19:25:24 -0400 Received: from userp1040.oracle.com ([156.151.31.81]:42412 "EHLO userp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754181AbbI3XZV (ORCPT ); Wed, 30 Sep 2015 19:25:21 -0400 Subject: Re: [PATCH v2 net-next 0/3] RDS: RDS-TCP perf enhancements To: Sowmini Varadhan , netdev@vger.kernel.org, linux-kernel@vger.kernel.org References: Cc: davem@davemloft.net, rds-devel@oss.oracle.com, ajaykumar.hotchandani@oracle.com, igor.maximov@oracle.com, sergei.shtylyov@cogentembedded.com From: santosh shilimkar Organization: Oracle Corporation Message-ID: <560C6F56.1040402@oracle.com> Date: Wed, 30 Sep 2015 16:25:10 -0700 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.2.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-Source-IP: aserv0022.oracle.com [141.146.126.234] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 9/30/2015 1:54 PM, Sowmini Varadhan wrote: > 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. > Acked-by: Santosh Shilimkar