From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mout.gmx.net (mout.gmx.net [212.227.17.21]) (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 D529C3B29D for ; Tue, 24 May 2022 03:44:28 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1653378267; bh=5fJwKOsd0gI5scy96dk+rmypmd2ZravWErmHKZaMWZ4=; h=X-UI-Sender-Class:Subject:From:In-Reply-To:Date:Cc:References:To; b=CX7y6NpHn0Ek53ez1MlWxnhz0JGwcjPq1U+nkT3273N70lHQli80QwUJrVhWI0mFt 1h0qWEtsaTqzwodk+CJobeexO78fIL9LI4yX40MFg/ZTki+k1mSPSYgh8q1+iuTlNt dpTpuL46xLe5vybmqiyggxZ6xK00FFklsBz50I+I= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from smtpclient.apple ([134.76.241.253]) by mail.gmx.net (mrgmx105 [212.227.17.168]) with ESMTPSA (Nemesis) id 1Mk0NU-1nQhAw4B2W-00kKm1; Tue, 24 May 2022 09:44:27 +0200 Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 14.0 \(3654.120.0.1.13\)) From: Sebastian Moeller In-Reply-To: Date: Tue, 24 May 2022 09:44:25 +0200 Cc: rpm@lists.bufferbloat.net Content-Transfer-Encoding: quoted-printable Message-Id: <7C4E89B4-28C7-4DFE-B905-34D78C0FF849@gmx.de> References: To: Frantisek Borsik X-Mailer: Apple Mail (2.3654.120.0.1.13) X-Provags-ID: V03:K1:tjdX9n4/q/LjeO2J70cCTqZ82afLmaqvk9q/2Rz/0neYqhrscsH UmU7UgPGqpziAZFSB1brA11AIYmCxwQwV7n3rOxli9Va57La9jA80x8OZXv4fhHfZrCVeQ4 kqdHB8O/7u4Nv/M74a/XUNFeW/67KDz6shThI0dSQ8+GhymAOA1e9FFCEt7cFfQyqbxceBT zW2JGDIiVdvIuHDXXH8nA== X-Spam-Flag: NO X-UI-Out-Filterresults: notjunk:1;V03:K0:8YFN0B7AVP0=:F9MHknX1fa+eSEe/QXNiEr y63zuH/WFVoyWc5obGuKIKqidqcsmdDQ7he5WRrUhc1ZKc1KusgAhwUnV+GPC9EkIyQr3p54q 0G7Mfz0XpbKXfSXguWKl7R4v562PYm9h9yOpVgoYFfYHR0NJLyu4bmQxWvQekGklAu9gIn9d+ U54/Mg2dzNTSNPXvnZei5RNm1NOko68IHNDMnep8h4MII4at9c8qICH7yw5EVIQC+OBCxIAHo zTvDClQSF8bZVzYoccMUIU3elMdKfHa92hmI1i+LltvCFfirJkYYlPoyoyQ0u4wTFPvRXxJiF nqdrnw1DFce+8kzA3KIDiW+TTTRIlvCZXKiEz0D23C/muagi8U2ZdJXKuww3/IXDubDVS/M3X +6jGKSjrCjVp+ZGNkgVr9tlMpw36V+4hZzDyh7rwrZoJ6b/wTJndmztQ1uqVmNus0CmgYDbZU KgluyAJSbWuFUyrqos5pVOA1xt07OUbptml2rUPjToFI3ueeWkXUVHHJfPUYJQjmSe/eu0MKg Ghi0+9fDoSjiPIIKCsYh4Kx0dd3I+A+/mE+zhe8TZNLduhXtVWIbu2Y180hPt94lrf2C9RQPn eEU5GefRpKr5UqQywEmyLkiCwjgbsCDeoU6We/npVTiJ1t2eQW12WVdF4OD1j5Lmo6zLYSY7j Rz0aJyIsl+e/tbrrgO69ePywfJW9fQTCKsINa1M/FRxZLUYfAcBXfiOi9UwTZMU+v780PTYxB adStEmwo1dQ8qNjSoCsYcrNDBK2ekg2iFRFp0f+KJTTgDpi3JziAF4UrpHXGZqrYQZYoZFAVy lrpVUqinrOOLp03PYGPd37xksEZ7IRmnhSkldbp8+OCVXwgo+0CKHUCF+sQP8cs8A1SQg4CSz xZQCG3+kbDl76xQeix09xITF0sz3AaIjUv1msnL3MlfPxsoSt4a91T3peqp/e/nvuOfjdTTRv 3IDpszcI6ATnw49I1fuUs48aARIjsTiJDTTar8Meor0ltRvHdjkjqPZh7sbKYXsnNMXF2jNZY yAWW+kUU8pis8H+b/5O8ueAyn8PGcccOgsju3c1+WSdNbaEy36TykxqsJzLLSmp/8d6H7igFa 7tDIHJqBbma2lluP/CwI0edQceS+gaoIOCzUMuxpyK3QS0TOUE7yMWRtw== Subject: Re: [Rpm] My home connection - Prague, Czech Republic X-BeenThere: rpm@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: revolutions per minute - a new metric for measuring responsiveness List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 24 May 2022 07:44:29 -0000 Hi Frantisek, in the speedtest app, you can drag up a "drawer" from the bottom, which = among others will reveal a "Change Test Server" "link" following that = you can manually select from a multitude of servers, just selexct one = that is unlikely to be housed by Cogent (like Vodafone.cz). Sure that = still does not rule out that Cogent is in the network path*, but if you = repeat the test with a few different servers and all show around the = same high upload latency this would point to your access link/ISP being = the likely responsible part. Regards Sebastian *) The best way to check a path requires both traceroute/mtr to and from = the remote endpoint (or at least to/from the network/data center the = remote end is housed in). Personally I like to use to following for the = forward trace (from local to remote, here goggle's anycasted DNS server = 8.8.8.8 as example): mtr -ezb4 -o LSNBAWVJMXI 8.8.8.8 For the reverse traceroute/mtr either use a looking glas server (if the = network offers these) or try to find a node in = https://www.globaltraceroute.com that is housed in the correct network = and location; this is a bit approximate, but what can we do, short of = adding the traceroute/mtr functionality into the actual speedtest so it = is always available. > On May 24, 2022, at 09:31, Frantisek Borsik = wrote: >=20 > Hey, not sure how I can do this kind of testing :-) but if You tell = me, I will do it, happily. >=20 > F. >=20 > https://www.linkedin.com/in/frantisekborsik >=20 > +421919416714 > Skype: casioa5302ca >=20 >=20 >=20 > On Tue, May 24, 2022 at 9:09 AM Sebastian Moeller = wrote: > Hi Frantisek, >=20 >=20 > > On May 24, 2022, at 06:41, Frantisek Borsik via Rpm = wrote: > >=20 > > Good, good - most of the time. > >=20 > > https://www.speedtest.net/my-result/i/5127045302 >=20 > This test is against fdcservers.net which appear to be = single-homed in Cogent's network, do you see the same high upload = latency under working conditions when measuring against servers in other = networks (that are not connected via Cogent)? >=20 > Regards > Sebastian=20 >=20 > P.S.: Not intended as dig against Cogent it is just that some ISP = networks are known to have issues with connectivity with Cogent, so = testing with servers in other networks can be a useful check. >=20 >=20 > >=20 > > Sent on the move. > >=20 > > F. > >=20 > > https://www.linkedin.com/in/frantisekborsik > >=20 > > +421919416714 > > Skype: casioa5302ca > > _______________________________________________ > > Rpm mailing list > > Rpm@lists.bufferbloat.net > > https://lists.bufferbloat.net/listinfo/rpm >=20