From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ed1-x52f.google.com (mail-ed1-x52f.google.com [IPv6:2a00:1450:4864:20::52f]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id 5F1B53B29D for ; Mon, 4 Sep 2023 13:19:51 -0400 (EDT) Received: by mail-ed1-x52f.google.com with SMTP id 4fb4d7f45d1cf-52c9be5e6f0so2104082a12.1 for ; Mon, 04 Sep 2023 10:19:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1693847990; x=1694452790; darn=lists.bufferbloat.net; h=to:subject:message-id:date:from:mime-version:from:to:cc:subject :date:message-id:reply-to; bh=zfMZaE4whBKM9HY78k5TCyu/UL39U/pbrdXdQQsKgv0=; b=l6VNLN6NW8I5NCjDDsPkHQTsC1ZcV+97SL17tyqrZ4WBMQx4pyEzLpoiB5cvHT65uD peJoEoKLzStMaGzdtJi3QwNmf/TdzYDe3uzvPxhQWKtbSQFvjHKh1TWTBzWCBS8nw3ki dtoO26v9EbPVrJFTTgBNWj1340ODiQPMCaka3KP/+dpVGxlIbRv0JMzyyMQPVWk6KJ1R PCcsCVn/XMZXEQgInlAiB5NtKPP/F4dZS9t9r8xaFvI7XFPg0I/LfOhgkvLl6Rf6+4OB yUSIef67LxCjcIhYrccxHSvZr9IUCOAztMZsNrCDFhw2yE+Xh2pgCY0wGlVii6tAQWPZ RMcw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1693847990; x=1694452790; h=to:subject:message-id:date:from:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=zfMZaE4whBKM9HY78k5TCyu/UL39U/pbrdXdQQsKgv0=; b=c/3Q9CaJ09G6VWkokIGaQVbAh2RT+N2Ef5WY0R5Og0A4k/SxViAyl63PSwGe4XYYuG W21j5exra7wH9uHq4qyoPsjulBObgoBYg8IzSw02cf9G3Y0T1k2/o0i37sj8qWjqa0Hj z96oqsZkBUPAlHft5oBqIkbFQ3smxS+kI+JV7nCin0d/8J7OhNTO+3nftvxim1e21IGt 80FWx9Ew0kAYGdzlR+50p5I7pFsUva5oPd/6pcuahULLW9JbUtBKHK6pXaOmG8ZSzHmm MPXOICOCRoepkUMdfJLEz8pMGEqy0i0MfaljTxBmUsF7ve0D0nU5htxz9A56osdcuXcz 42Ag== X-Gm-Message-State: AOJu0YwDXMZF7ugEqzyWMwAJN/cp5qZitA2gd4UYqtr7cT1SsBUXnmqs YGruP6sTwE3zgDY9LHB9oERWPzV/ZK+7JQtllFKRfoAfZKw= X-Google-Smtp-Source: AGHT+IEJQTH049Ut/0KEcs94Q3CJ94dY5URC9+X1zfuChR4KCSblJIDG4Ff3WOLaPrz3xBpVM13FmvszONjjPJdLXt4= X-Received: by 2002:aa7:cd7a:0:b0:521:a4bb:374f with SMTP id ca26-20020aa7cd7a000000b00521a4bb374fmr8521209edb.5.1693847989836; Mon, 04 Sep 2023 10:19:49 -0700 (PDT) MIME-Version: 1.0 From: Maximilian Bachl Date: Mon, 4 Sep 2023 19:19:38 +0200 Message-ID: To: bloat Content-Type: multipart/alternative; boundary="000000000000bce0a506048bb7f0" Subject: [Bloat] Measurement tool to detect fair queuing 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, 04 Sep 2023 17:19:51 -0000 --000000000000bce0a506048bb7f0 Content-Type: text/plain; charset="UTF-8" I was wondering if my cable modem supports fair queuing, so I wrote a simple measurement tool. It can test for fq_codel, cake and fq (and possibly more): https://github.com/muxamilian/fq-detection-simple In my simple testbed it achieves an accuracy of close to 100%. A limitation is that the tool struggles to saturate the link for large bandwidths (> 1 Gbit/s) and in this case the measurement will be inconclusive. Hope it might be useful for some of you. Max --000000000000bce0a506048bb7f0 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
I was wondering if my cable modem supports fair queuing, s= o I wrote a simple measurement tool. It can test for fq_codel, cake and fq = (and possibly more):=C2=A0https://github.com/muxamilian/fq-detection-s= imple

In my simple testbed it achieves an accuracy o= f close to 100%. A limitation is that the tool struggles to saturate the li= nk for large bandwidths (> 1 Gbit/s) and in this case the measurement wi= ll be inconclusive.=C2=A0

Hope it might be useful = for some of you.=C2=A0

Max
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