From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.toke.dk (mail.toke.dk [IPv6:2a0c:4d80:42:2001::664]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id 958E03B2A4 for ; Mon, 9 Nov 2020 06:51:26 -0500 (EST) From: Toke =?utf-8?Q?H=C3=B8iland-J=C3=B8rgensen?= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=toke.dk; s=20161023; t=1604922684; bh=YXYflspLMKIxbDEJ6pCVkgumDX3v2VlcRo558k18H/4=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=S9TIMQxObLzigrMwYT/u/MSlmnNk1GJvRPJ2z0XR/0sraqtKzt3l4cJdOIweO9rN9 AotV7VmIG4Olofk1PpngFLbxHN4hpBUVHmccMHhps3Gm6vcA9wcln34T1EKwN1Q2ZN mMw9BRd7v8OZY5jf/mjgZhesJw27KvvXLYFwZ2+bSaMWnT8xwMKPG0B7ROHrnZYiZu /+NcfuElpVWgvGGijzh1PIVNH2nJTUkK0V6z26DSkPOt09DEK5hBfy5Xuij6PwPApv kEB4hhGwKK6L0xUWjyhypk4d+zKsVtvn5jFDCCjojjkNtYPgARWcOJRY3lKThAEpgL g6JMZFMLw7fow== To: Jesper Dangaard Brouer , Thomas Rosenstein Cc: Thomas Rosenstein via Bloat In-Reply-To: <20201109124030.71216677@carbon> References: <871rh8vf1p.fsf@toke.dk> <81ED2A33-D366-42FC-9344-985FEE8F11BA@creamfinance.com> <87sg9ot5f1.fsf@toke.dk> <20201105143317.78276bbc@carbon> <11812D44-BD46-4CA4-BA39-6080BD88F163@creamfinance.com> <20201106121840.7959ae4b@carbon> <87blgaso84.fsf@toke.dk> <20201106135358.09f6c281@carbon> <20201106151324.5f506574@carbon> <1E70B6D2-1212-43FA-989A-03B657EEE2F2@creamfinance.com> <20201106211940.4c30ccc9@carbon> <6963be0e-3eb5-5875-b53c-66033f50dc2d@gmail.com> <12D28386-7C00-4A31-91E4-37083C1674F9@creamfinance.com> <20201109092428.293104ea@carbon> <7723D882-4DAB-4A70-9D00-DF1976872AC2@creamfinance.com> <20201109124030.71216677@carbon> Date: Mon, 09 Nov 2020 12:51:24 +0100 X-Clacks-Overhead: GNU Terry Pratchett Message-ID: <87eel2g343.fsf@toke.dk> MIME-Version: 1.0 Content-Type: text/plain Subject: Re: [Bloat] Router congestion, slow ping/ack times with kernel 5.4.60 X-BeenThere: bloat@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: General list for discussing Bufferbloat List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 09 Nov 2020 11:51:26 -0000 >> Also, it's TX, and we are only doing RX, as I said already somewhere, >> it's async routing, so the TX data comes via another router back. > > Okay, but as this is a router you also need to transmit this > (asymmetric) traffic out another interface right. > > Could you also provide ethtool_stats for the TX interface? > > Notice that the tool[1] ethtool_stats.pl support monitoring several > interfaces at the same time, e.g. run: > > ethtool_stats.pl --sec 3 --dev eth4 --dev ethTX > > And provide output as pastebin. Also, from your drawing, everything goes through the same switch, right? And since pause frames are involved... Maybe it's the switch being overwhelmed? In general, I find that pause frames give more problems than they solve, so I always turn them off... -Toke