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 38+yGhjq9l/pYQAA0tVLHw (envelope-from ) for ; Thu, 07 Jan 2021 11:01:44 +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 CEz6FRjq9l/XTQAAB5/wlQ (envelope-from ) for ; Thu, 07 Jan 2021 11:01:44 +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 14DA79404C4 for ; Thu, 7 Jan 2021 11:01:44 +0000 (UTC) Received: from localhost ([::1]:44744 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kxT30-0002vI-TG for larch@yhetil.org; Thu, 07 Jan 2021 06:01:42 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:49656) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kxT2A-0002QL-Fl for guix-devel@gnu.org; Thu, 07 Jan 2021 06:00:50 -0500 Received: from relay8-d.mail.gandi.net ([217.70.183.201]:42845) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kxT26-0007Nt-82 for guix-devel@gnu.org; Thu, 07 Jan 2021 06:00:48 -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 relay8-d.mail.gandi.net (Postfix) with ESMTPSA id DF88C1BF20E; Thu, 7 Jan 2021 11:00:39 +0000 (UTC) From: Pierre Neidhardt To: Guillaume Le Vaillant , Joshua Branson Subject: Re: When substitute download + decompression is CPU-bound In-Reply-To: <87ft3d2fge.fsf@yamatai> References: <87im94qbby.fsf@gnu.org> <94405d66-b13c-e6e6-e8d5-df23b93e5d97@web.de> <87im92voqw.fsf@dismail.de> <87ft3d2fge.fsf@yamatai> Date: Thu, 07 Jan 2021 12:00:37 +0100 Message-ID: <87czyhc8q2.fsf@ambrevar.xyz> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha256; protocol="application/pgp-signature" Received-SPF: pass client-ip=217.70.183.201; envelope-from=mail@ambrevar.xyz; helo=relay8-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_H2=-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: , Cc: guix-devel@gnu.org Errors-To: guix-devel-bounces+larch=yhetil.org@gnu.org Sender: "Guix-devel" X-Migadu-Flow: FLOW_IN X-Migadu-Spam-Score: -1.95 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: 14DA79404C4 X-Spam-Score: -1.95 X-Migadu-Scanner: scn0.migadu.com X-TUID: eSfSGDQcKnHT --=-=-= Content-Type: text/plain Content-Transfer-Encoding: quoted-printable Wow, impressive! :) Guillaume Le Vaillant writes: > Note that the plots only show the results using only 1 thread and Doesn't 1 thread defeat the purpose of parallel compression / decompression? > Machine used for the tests: > - CPU: Intel i7-3630QM > - RAM: 16 MiB I suppose you meant 16 GiB ;) Cheers! =2D-=20 Pierre Neidhardt https://ambrevar.xyz/ --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQFGBAEBCAAwFiEEUPM+LlsMPZAEJKvom9z0l6S7zH8FAl/26dUSHG1haWxAYW1i cmV2YXIueHl6AAoJEJvc9Jeku8x/0QQH+gMq3njjN5YSxGF0geEhx7U0I+GLABzt Cg2XvFLf9rxlfqyi235/YgZZBF+QnaBgP1B4DrrrvAzltWqhqwhdVXkRgS83CNZ6 AQTHo8yxZc47/BDQVjKvgpve660w7col/LDdgQ3z8Cuc9vw/fGax+/XT/T8ap84F nTOhDEE8EYBiXV97YKvdg5DmZXmE6GTldsJ90xI3iTy78L58Y8JLgw4FflUn55xU OoX6aqKhPH0fkF5tsuytjQQrOaraBIcqO4wsmMfo42aXPa/2SpuZ2z4R2sjx0+en UrZEVjZm2GlDZb78r5ytC8Nag3+C5Kp4CJlv0JXx8mFAebLptCRH1hk= =6Ge4 -----END PGP SIGNATURE----- --=-=-=--