From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sowmini Varadhan Subject: Re: [PATCH net-next 0/2] pskb_extract() helper function. Date: Fri, 22 Apr 2016 19:41:49 -0400 Message-ID: <20160422234149.GD30220@oracle.com> References: <20160422232301.GA1594@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: netdev@vger.kernel.org, rds-devel@oss.oracle.com, santosh.shilimkar@oracle.com, davem@davemloft.net, eric.dumazet@gmail.com To: marcelo.leitner@gmail.com Return-path: Received: from userp1040.oracle.com ([156.151.31.81]:23191 "EHLO userp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751800AbcDVXl7 (ORCPT ); Fri, 22 Apr 2016 19:41:59 -0400 Content-Disposition: inline In-Reply-To: <20160422232301.GA1594@localhost.localdomain> Sender: netdev-owner@vger.kernel.org List-ID: On (04/22/16 20:23), marcelo.leitner@gmail.com wrote: > My tests results were very similar to what I had without it. Varying to > better or worse, tending worse. Thing is, SCTP always works on > linearized skbs as it can't crawl on fragments, so those clone/trim sorry to hear that. For RDS-TCP, the rx side does show a noticeable benefit with rds-stress. To an extent, this is also impacted by the packet size, and the type of test (for our DB workloads, we use request-response tests, and the packet size tends to typically be 8K req, 256 byt responses), so I guess ymmv. --Sowmini