From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-40134.protonmail.ch (mail-40134.protonmail.ch [185.70.40.134]) (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 CC7D73B2A4 for ; Mon, 22 Jun 2020 17:14:41 -0400 (EDT) Date: Mon, 22 Jun 2020 21:14:32 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=protonmail.com; s=protonmail; t=1592860480; bh=qqO6ZNsrKEJuYuVXwnG0K+qz9baPOkV1k+bctp48kAY=; h=Date:To:From:Cc:Reply-To:Subject:In-Reply-To:References:From; b=HrIb30Uh0YNrD6FTDy3JfuOC6CgE71E8JQ2zT+KqKZbyQWfpmY6EpQCPa5w7NTW5k LSevuYZys37lOkb2RadLDqnrloJKXFoTILBLb8cm/XA8423GDD+FlyZEXcxt3XJrO3 luONbadx5gWOLz091MUUKHHQPaqAv38YBkTNxB5s= To: Simon Barber From: Michael Yartys Cc: =?utf-8?Q?Toke_H=C3=B8iland-J=C3=B8rgensen?= , "make-wifi-fast@lists.bufferbloat.net" Reply-To: Michael Yartys Subject: Re: [Make-wifi-fast] Bufferbloat on Norwegian train wifi Message-ID: In-Reply-To: References: <87tuz3tgaq.fsf@toke.dk> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Spam-Status: No, score=-1.2 required=7.0 tests=ALL_TRUSTED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM shortcircuit=no autolearn=disabled version=3.4.4 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on mail.protonmail.ch X-List-Received-Date: Mon, 22 Jun 2020 21:14:41 -0000 Wow, those are some truly crappy networks! I'll try to contact Vy to get them to do something about it. I wonder how m= uch of this might be due to the equipment on their trains though. I decided= to measure the bufferbloat on the LTE network in my neighbourhood, and on = average I got 300 ms above baseline while running an 8-stream TCP download.= Then again, I ran this test with my phone acting as a hotspot, and the res= ults might be affected by that. Does anybody know if this methodology produ= ces reliable results? I presume that even the very short peak of 86 Mbps sh= ouldn't really cause much WiFi-related bufferbloat. Michael