From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mp11.migadu.com ([2001:41d0:2:bcc0::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by ms5.migadu.com with LMTPS id yAABHavglGI8owAAbAwnHQ (envelope-from ) for ; Mon, 30 May 2022 17:20:11 +0200 Received: from aspmx1.migadu.com ([2001:41d0:2:bcc0::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by mp11.migadu.com with LMTPS id ONH3HKvglGJDXQEA9RJhRA (envelope-from ) for ; Mon, 30 May 2022 17:20:11 +0200 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by aspmx1.migadu.com (Postfix) with ESMTPS id 1DF5C131E5 for ; Mon, 30 May 2022 17:20:11 +0200 (CEST) Received: from localhost ([::1]:39766 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nvhBa-0004IM-9Q for larch@yhetil.org; Mon, 30 May 2022 11:20:03 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:55528) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nvh7m-0005Ru-FP for guix-devel@gnu.org; Mon, 30 May 2022 11:16:06 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]:39898) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nvh7m-0007RW-1d; Mon, 30 May 2022 11:16:06 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=MIME-Version:In-Reply-To:Date:References:Subject:To: From; bh=PH6xV+jqHtlOgHAfdbE0w3Lb4MEOOrC5YUtyNZ9zG3o=; b=sa8nLQinizDYamV3sqfa dMLGh4k5y42GiAwmpvxn+9ZfOB8H3EEaXUbOH3nsWnIOEScqqvHQWzS/ZnRTvRV3SIunsq7aNzPZ9 DlpKNt3ItHwYwO9AeraFZCk2971l/vgkQRa6JvrH4z+gqlAXW0AGxIFo8QRaBib6OzQWgm3VunTYe RvcKjoqk9gM27H524+X23ZB/CYgOEX8YkBS4r7HcOqRVq9Hggw+EFzJKTBgUdjxzGczg7kulWubY9 hAjP3DZoo9dd3R0tqix4zhIroleT/WZg54IMidb0PsFCPCoc1ruudKxT2Om6VegyCIdGeGTKAvkaB EGxEe8Yn/oRoIQ==; Received: from [2001:660:6102:320:e120:2c8f:8909:cdfe] (port=59952 helo=ribbon) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nvh7k-00049a-5x; Mon, 30 May 2022 11:16:05 -0400 From: =?utf-8?Q?Ludovic_Court=C3=A8s?= To: Christopher Baines Cc: guix-devel@gnu.org Subject: Re: Test US mirror for bordeaux.guix.gnu.org and slow downloading of substitutes References: <87pmk8mbvg.fsf@cbaines.net> X-URL: http://www.fdn.fr/~lcourtes/ X-Revolutionary-Date: Primidi 11 Prairial an 230 de la =?utf-8?Q?R=C3=A9vo?= =?utf-8?Q?lution=2C?= jour de la Fraise X-PGP-Key-ID: 0x090B11993D9AEBB5 X-PGP-Key: http://www.fdn.fr/~lcourtes/ludovic.asc X-PGP-Fingerprint: 3CE4 6455 8A84 FDC6 9DB4 0CFB 090B 1199 3D9A EBB5 X-OS: x86_64-pc-linux-gnu Date: Mon, 30 May 2022 17:16:01 +0200 In-Reply-To: <87pmk8mbvg.fsf@cbaines.net> (Christopher Baines's message of "Fri, 20 May 2022 16:38:07 +0100") Message-ID: <8735gr3vbi.fsf@gnu.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-BeenThere: guix-devel@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Development of GNU Guix and the GNU System distribution." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: guix-devel-bounces+larch=yhetil.org@gnu.org Sender: "Guix-devel" X-Migadu-Flow: FLOW_IN X-Migadu-To: larch@yhetil.org X-Migadu-Country: US ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=yhetil.org; s=key1; t=1653924011; h=from:from:sender:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:list-id:list-help: list-unsubscribe:list-subscribe:list-post:dkim-signature; bh=PH6xV+jqHtlOgHAfdbE0w3Lb4MEOOrC5YUtyNZ9zG3o=; b=pgihG6noGi4Dc03iFg0PLVRDWYdiAmkTDS9sBHgZZKVXn3CE4kwkkukWLukqMG0Xbs1xXT Aq10VpbtoughQtFBiCYglEnc2dMdMsvckge3ikLp4N/pwdi4Ocj9g2lEb/uAjBBgzN5KFP AcHwOwfaarHYfMbW8Jkd40vvdFHo6sj7vPnJk8Qj6Tz0CqNw+ATLKhcaZXDk6bF4Ws1IBX 8J5w+7DJy22lE7WGeB2ymrJ8IWo/lxdQjldbVs8NwNn3rI/EQqImQpED8d2N22RLrhdit1 bQGGgVzimw56q310Sgiu+WLq4zA1oFflsQ0SPMSOU28yO2I1+fddG6+AKoW1Pw== ARC-Seal: i=1; s=key1; d=yhetil.org; t=1653924011; a=rsa-sha256; cv=none; b=ZkODDfpUDJ/C2SJS1tbUKs/0dFfhqPXvKPjPqvEjRPWMbgrmcRseiRDYO/E+f2ieOFSRNG NqdN/I8AiQTHtRmWpMHNaz/BqABTSkJEOE2/ad3MYVqieqdMviZeHgB04M3/LZlrRnrzux abg7uwScw/ydSxIJTdyd4OeGS7kdRmnjki47HC237LCGB6wHoAsn0YLDXD67Pq3+TkYp6B PpCF0G/IhCgi5jDGC1QT4cqMi2ZZ5ZDWjwX+uuJEvPVfd5eTx9+zyVcZZWiI1U5SQ15ekF NccKyt3uC6mdX666nIoet/UHN9pM1B9+vsTkdV97ULcEXZ3CvkHA8rREWJb5mQ== ARC-Authentication-Results: i=1; aspmx1.migadu.com; dkim=pass header.d=gnu.org header.s=fencepost-gnu-org header.b=sa8nLQin; dmarc=pass (policy=none) header.from=gnu.org; spf=pass (aspmx1.migadu.com: domain of "guix-devel-bounces+larch=yhetil.org@gnu.org" designates 209.51.188.17 as permitted sender) smtp.mailfrom="guix-devel-bounces+larch=yhetil.org@gnu.org" X-Migadu-Spam-Score: -5.23 Authentication-Results: aspmx1.migadu.com; dkim=pass header.d=gnu.org header.s=fencepost-gnu-org header.b=sa8nLQin; dmarc=pass (policy=none) header.from=gnu.org; spf=pass (aspmx1.migadu.com: domain of "guix-devel-bounces+larch=yhetil.org@gnu.org" designates 209.51.188.17 as permitted sender) smtp.mailfrom="guix-devel-bounces+larch=yhetil.org@gnu.org" X-Migadu-Queue-Id: 1DF5C131E5 X-Spam-Score: -5.23 X-Migadu-Scanner: scn1.migadu.com X-TUID: OLVoNnXAvECZ Hi, Christopher Baines skribis: > Now, performance is probably a bit more complicated than just download > speed. The US mirror holds the narinfo information locally, which should > enable it to respond to requests more quickly, reducing latency, but > this is a little harder to test. For those of us who have a fast connection to the server, download time is CPU-bound; in that case, offering zstd substitutes can make a real difference: https://guix.gnu.org/en/blog/2021/getting-bytes-to-disk-more-quickly/ Ludo=E2=80=99.