From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by finch.gentoo.org (Postfix) with ESMTPS id B25401382C5 for ; Sat, 16 Jan 2021 18:55:20 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id C1B68E087C; Sat, 16 Jan 2021 18:55:14 +0000 (UTC) Received: from mail-gw.thundermail.uk (mail-gw.thundermail.uk [149.255.60.72]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by pigeon.gentoo.org (Postfix) with ESMTPS id 44B67E0849 for ; Sat, 16 Jan 2021 18:55:13 +0000 (UTC) Received: from mailgw01.thundermail.uk (mail-gw.thundermail.uk [149.255.60.66]) by mail-gw.thundermail.uk (Postfix) with ESMTPS id 33889606ACA0 for ; Sat, 16 Jan 2021 18:55:11 +0000 (GMT) X-ASG-Debug-ID: 1610823310-05541344d42b1740001-LfjuLa Received: from cloud220.unlimitedwebhosting.co.uk (cloud220.unlimitedwebhosting.co.uk [149.255.60.183]) by mailgw01.thundermail.uk with ESMTP id g2ek6iEsAOyzsoBZ (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NO) for ; Sat, 16 Jan 2021 18:55:10 +0000 (GMT) X-Barracuda-Envelope-From: confabulate@kintzios.com X-Barracuda-Effective-Source-IP: cloud220.unlimitedwebhosting.co.uk[149.255.60.183] X-Barracuda-Apparent-Source-IP: 149.255.60.183 Received: from lenovo.localdomain (230.3.169.217.in-addr.arpa [217.169.3.230]) by cloud220.unlimitedwebhosting.co.uk (Postfix) with ESMTPSA id A16A7CC1F04 for ; Sat, 16 Jan 2021 18:55:09 +0000 (GMT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kintzios.com; s=default; t=1610823310; bh=vimZT8olG63mNggm5rWdLYX3xjkgZBWsotbLv4r0Nzg=; h=From:To:Subject; b=fItGlCh7zOWAwVESivgb/l9S60qCfKkonPNSUQf/UKJO5nHiFYDc23KqWgxfCVpuD wDgVzwbiy7l/4+1R6Wdqzq+ZZN20CpCrCMR8VDXbJWnRx8Fs8aCs92xg+kNiUp/pXs XKVyW5MdoNDIiowBm64jGEt/4La4/36UNBmS04W8= From: Michael To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] network transfer speed Date: Sat, 16 Jan 2021 18:55:09 +0000 X-ASG-Orig-Subj: Re: [gentoo-user] network transfer speed Message-ID: <4638447.31r3eYUQgx@lenovo.localdomain> In-Reply-To: References: <17080d29-e525-9cec-da43-2702b0de9aca@users.sourceforge.net> Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org X-Auto-Response-Suppress: DR, RN, NRN, OOF, AutoReply MIME-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart4307012.LvFx2qVVIh"; micalg="pgp-sha256"; protocol="application/pgp-signature" X-PPP-Message-ID: <20210116185510.1581699.28678@cloud220.unlimitedwebhosting.co.uk> X-PPP-Vhost: kintzios.com X-Barracuda-Connect: cloud220.unlimitedwebhosting.co.uk[149.255.60.183] X-Barracuda-Start-Time: 1610823310 X-Barracuda-Encrypted: ECDHE-RSA-AES128-GCM-SHA256 X-Barracuda-URL: https://149.255.60.66:443/cgi-mod/mark.cgi X-ASG-Orig-Subj: Re: [gentoo-user] network transfer speed X-Virus-Scanned: by bsmtpd at thundermail.uk X-Barracuda-Scan-Msg-Size: 1660 X-Barracuda-BRTS-Status: 1 X-Barracuda-Spam-Score: 0.00 X-Barracuda-Spam-Status: No, SCORE=0.00 using global scores of TAG_LEVEL=1000.0 QUARANTINE_LEVEL=1000.0 KILL_LEVEL=1.9 tests= X-Barracuda-Spam-Report: Code version 3.2, rules version 3.2.3.87292 Rule breakdown below pts rule name description ---- ---------------------- -------------------------------------------------- X-Archives-Salt: ab3d13b9-12b1-4577-bceb-9ab7ff8b11ab X-Archives-Hash: e875f3369ff8f251eda09c4fb5c549c1 --nextPart4307012.LvFx2qVVIh Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="UTF-8"; protected-headers="v1" From: Michael To: gentoo-user@lists.gentoo.org Reply-To: confabulate@kintzios.com Subject: Re: [gentoo-user] network transfer speed Date: Sat, 16 Jan 2021 18:55:09 +0000 Message-ID: <4638447.31r3eYUQgx@lenovo.localdomain> In-Reply-To: References: <17080d29-e525-9cec-da43-2702b0de9aca@users.sourceforge.net> On Friday, 15 January 2021 22:43:36 GMT thelma@sys-concept.com wrote: > The fact that I'm logged via ssh over VPN to a remote network should not > have any influence over network speed. It may influence speed if you're trying to push a large file through the tunnel. TCP over TCP tends to choke due to retransmissions: http://sites.inka.de/bigred/devel/tcp-tcp.html Is the VPN you mention using a TCP or UDP tunnel? > I just made a loop: > Network A ==> Internet ==> Network B > ssh back to Network A over internet and run "rsync" I got same speed (as if > I run the command locally) on Network A 112MB/s > > So the limiting factor is somewhere else. I'm sorry, but I fail to understand with any clarity what runs where and how when you test things locally, Vs remotely. I mean: - Network topology; - Network Protocols; - Applications & application protocols; - Relevant services on each peer; - Actions on each peer; - Results per action. As already mentioned iperf or netcat/telnet results will confirm if this is purely a network issue, ISPs performing deep packet inspection/throttling affecting throughput asymmetrically, etc. SSDs are typically faster than spinning disks, but not always as fast as ramdisks/tmpfs, especially if write amplification takes place, TRIM kicks in, etc. Stacking network + application protocols can also have an adverse effect. Applications like rsync which compare file names, sizes, hashes and what not, do not offer a reliable speed comparison. Methodically testing each component of the transmission system should get you an answer at the end. --nextPart4307012.LvFx2qVVIh Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part. 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