From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alexander Sverdlin Date: Tue, 15 Apr 2014 06:43:47 +0000 Subject: Re: [PATCH net] Revert "net: sctp: Fix a_rwnd/rwnd management to reflect real state of the receiver' Message-Id: <534CD523.50301@nsn.com> List-Id: References: <1397504717-19566-1-git-send-email-dborkman@redhat.com> In-Reply-To: <1397504717-19566-1-git-send-email-dborkman@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: ext Daniel Borkmann , davem@davemloft.net Cc: netdev@vger.kernel.org, linux-sctp@vger.kernel.org, Matija Glavinic Pecotic , Vlad Yasevich Hello Daniel, On 14/04/14 21:45, ext Daniel Borkmann wrote: > This reverts commit ef2820a735f7 ("net: sctp: Fix a_rwnd/rwnd management > to reflect real state of the receiver's buffer") as it introduced a > serious performance regression on SCTP over IPv4 and IPv6, though a not > as dramatic on the latter. Measurements are on 10Gbit/s with ixgbe NICs. Could you please share other HW details? I wonder how much CPU power one needs for such a throughput? -- Best regards, Alexander Sverdlin. From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alexander Sverdlin Subject: Re: [PATCH net] Revert "net: sctp: Fix a_rwnd/rwnd management to reflect real state of the receiver's buffer" Date: Tue, 15 Apr 2014 08:43:47 +0200 Message-ID: <534CD523.50301@nsn.com> References: <1397504717-19566-1-git-send-email-dborkman@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, linux-sctp@vger.kernel.org, Matija Glavinic Pecotic , Vlad Yasevich To: ext Daniel Borkmann , davem@davemloft.net Return-path: Received: from demumfd002.nsn-inter.net ([93.183.12.31]:51220 "EHLO demumfd002.nsn-inter.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750930AbaDOGn4 (ORCPT ); Tue, 15 Apr 2014 02:43:56 -0400 In-Reply-To: <1397504717-19566-1-git-send-email-dborkman@redhat.com> Sender: netdev-owner@vger.kernel.org List-ID: Hello Daniel, On 14/04/14 21:45, ext Daniel Borkmann wrote: > This reverts commit ef2820a735f7 ("net: sctp: Fix a_rwnd/rwnd management > to reflect real state of the receiver's buffer") as it introduced a > serious performance regression on SCTP over IPv4 and IPv6, though a not > as dramatic on the latter. Measurements are on 10Gbit/s with ixgbe NICs. Could you please share other HW details? I wonder how much CPU power one needs for such a throughput? -- Best regards, Alexander Sverdlin.