From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mp2 ([2001:41d0:2:4a6f::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by ms11 with LMTPS id GNLnGeCH2F/tQQAA0tVLHw (envelope-from ) for ; Tue, 15 Dec 2020 09:54:40 +0000 Received: from aspmx1.migadu.com ([2001:41d0:2:4a6f::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by mp2 with LMTPS id eCuwFeCH2F/2VAAAB5/wlQ (envelope-from ) for ; Tue, 15 Dec 2020 09:54:40 +0000 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 18199940148 for ; Tue, 15 Dec 2020 09:54:40 +0000 (UTC) Received: from localhost ([::1]:46148 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kp72V-0005WN-3a for larch@yhetil.org; Tue, 15 Dec 2020 04:54:39 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:35158) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kp72B-0005Vo-9L for guix-devel@gnu.org; Tue, 15 Dec 2020 04:54:20 -0500 Received: from relay3-d.mail.gandi.net ([217.70.183.195]:43131) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kp727-00039R-MR; Tue, 15 Dec 2020 04:54:18 -0500 X-Originating-IP: 86.247.16.87 Received: from bababa (lfbn-idf2-1-709-87.w86-247.abo.wanadoo.fr [86.247.16.87]) (Authenticated sender: mail@ambrevar.xyz) by relay3-d.mail.gandi.net (Postfix) with ESMTPSA id A9B0B6000C; Tue, 15 Dec 2020 09:54:10 +0000 (UTC) From: Pierre Neidhardt To: =?utf-8?Q?Nicol=C3=B2?= Balzarotti , Ludovic =?utf-8?Q?Court=C3=A8s?= , guix-devel Subject: Re: When substitute download + decompression is CPU-bound In-Reply-To: <87pn3bo117.fsf@guixSD.i-did-not-set--mail-host-address--so-tickle-me> References: <87im94qbby.fsf@gnu.org> <87sg88ngd1.fsf@guixSD.i-did-not-set--mail-host-address--so-tickle-me> <871rfrld59.fsf@ambrevar.xyz> <87pn3bo117.fsf@guixSD.i-did-not-set--mail-host-address--so-tickle-me> Date: Tue, 15 Dec 2020 10:54:10 +0100 Message-ID: <87im93bdj1.fsf@ambrevar.xyz> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha256; protocol="application/pgp-signature" Received-SPF: pass client-ip=217.70.183.195; envelope-from=mail@ambrevar.xyz; helo=relay3-d.mail.gandi.net X-Spam_score_int: 0 X-Spam_score: -0.1 X-Spam_bar: / X-Spam_report: (-0.1 / 5.0 requ) BAYES_00=-1.9, FROM_SUSPICIOUS_NTLD=0.499, PDS_OTHER_BAD_TLD=1.999, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: guix-devel@gnu.org X-Mailman-Version: 2.1.23 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-Spam-Score: -4.41 Authentication-Results: aspmx1.migadu.com; dkim=none; dmarc=none; spf=pass (aspmx1.migadu.com: domain of guix-devel-bounces@gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=guix-devel-bounces@gnu.org X-Migadu-Queue-Id: 18199940148 X-Spam-Score: -4.41 X-Migadu-Scanner: scn0.migadu.com X-TUID: 6hO86IMGf9y9 --=-=-= Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Nicol=C3=B2 Balzarotti writes: > Pierre Neidhardt writes: > >> Another option is plzip (parallel Lzip, an official part of Lzip). > > Wouldn't that mean that this will become a problem when we'll have > parallel downloads (and sometimes parallel decompression will happen)? What do you mean? Parallel decompression is unrelated to downloads as far as I understand. Once the archive (or just archive chunks?) is available, plzip can decompress multiple segments at the same time if enough cores are available. =2D-=20 Pierre Neidhardt https://ambrevar.xyz/ --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQFGBAEBCAAwFiEEUPM+LlsMPZAEJKvom9z0l6S7zH8FAl/Yh8ISHG1haWxAYW1i cmV2YXIueHl6AAoJEJvc9Jeku8x/jtcH+wWiHTxVpF3vpzOx4huHyeRyGmmuC7Ob 9KUw4pJa73lZBaI6YLr0G2nZuAnrfN5WaffPU7k94qcrpH/i8go53ck5+KonRHHH L2djB0JOAr8bnx6rPOKX/Su1b72OC2I/Tdk2F6U+fOFbuEh5JYGc5egvNEUE3ME1 IxkAO0QlrmySsrduTfQs93qxUFcls6K6xpDkaZuKuyOz+qmoEsCsiYPfUrJe4LKp kq2sgfJUYuucocczwWU49/SNJkEgdK2oNtR9+Pvn/LMjG52f4CiOc6U9utMS20cT XpCF8Hi5VDRZQKh3WJLymzj9nPMumbOfaPnOmzb2MJIj1DiCwUO7PWY= =eNtg -----END PGP SIGNATURE----- --=-=-=--