From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp112.iad3a.emailsrvr.com (smtp112.iad3a.emailsrvr.com [173.203.187.112]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id A5ED83CB36 for ; Thu, 27 Dec 2018 12:29:40 -0500 (EST) Received: from smtp31.relay.iad3a.emailsrvr.com (localhost [127.0.0.1]) by smtp31.relay.iad3a.emailsrvr.com (SMTP Server) with ESMTP id 708C324977 for ; Thu, 27 Dec 2018 12:29:40 -0500 (EST) X-SMTPDoctor-Processed: csmtpprox beta Received: from smtp31.relay.iad3a.emailsrvr.com (localhost [127.0.0.1]) by smtp31.relay.iad3a.emailsrvr.com (SMTP Server) with ESMTP id 6E24423AE6 for ; Thu, 27 Dec 2018 12:29:40 -0500 (EST) X-Auth-ID: dev@logicalwebhost.com Received: by smtp31.relay.iad3a.emailsrvr.com (Authenticated sender: dev-AT-logicalwebhost.com) with ESMTPSA id 305EC24977 for ; Thu, 27 Dec 2018 12:29:40 -0500 (EST) X-Sender-Id: dev@logicalwebhost.com Received: from [192.168.10.100] (97-90-101-114.static.mdfd.or.charter.com [97.90.101.114]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384) by 0.0.0.0:25 (trex/5.7.12); Thu, 27 Dec 2018 12:29:40 -0500 From: Dev Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Mime-Version: 1.0 (Mac OS X Mail 12.2 \(3445.102.3\)) Message-Id: Date: Thu, 27 Dec 2018 09:29:38 -0800 To: bloat@lists.bufferbloat.net X-Mailer: Apple Mail (2.3445.102.3) Subject: [Bloat] link saturation test failing 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: Thu, 27 Dec 2018 17:29:40 -0000 I=E2=80=99m running Debian Buster, trying to saturate a link, enable = fq_codel and drop my ping times back down, but they seem to stay high.=20= I connected machine A and B to a gig switch, then dropped the port speed = on machine A like: ethtool -s enp8s0 advertise 0x002 Then verified the link lights on switch show 10M. Then try to enable = fq_codel and swamp link like: tc qdisc add dev enp8s0 root fq_codel dd if=3D/dev/urandom | ssh user@192.168.10.150 dd of=3D/dev/null I still have high ping times (10msec vs 0.5 msec). I try to saturate = with iperf and the same thing happens. Then I try to look at fq_codel = like: tc qdisc show dev enp8s0 qdisc fq_codel 8001: root refcnt 6 limit 10240p flows 1024 quantum 1514 = target 5.0ms interval 100.0ms memory_limit 32Mb ecn and tc -g -s class show dev enp8s0 +---(:5) mq | Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0) | backlog 0b 0p requeues 0 | +---(:4) mq | Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0) | backlog 0b 0p requeues 0 | +---(:3) mq | Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0) | backlog 0b 0p requeues 0 | +---(:2) mq | Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0) | backlog 0b 0p requeues 0 | +---(:1) mq Sent 248411320 bytes 164594 pkt (dropped 0, overlimits 0 = requeues 4) backlog 0b 0p requeues 4 But I don=E2=80=99t really know what I should be looking for/doing. -Dev=