From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mp1 ([2001:41d0:2:4a6f::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by ms11 with LMTPS id +NJbAZ3x9l9OIgAA0tVLHw (envelope-from ) for ; Thu, 07 Jan 2021 11:33:49 +0000 Received: from aspmx1.migadu.com ([2001:41d0:2:4a6f::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by mp1 with LMTPS id uF3AOJzx9l+DRwAAbx9fmQ (envelope-from ) for ; Thu, 07 Jan 2021 11:33:48 +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 BD99F9403A9 for ; Thu, 7 Jan 2021 11:33:48 +0000 (UTC) Received: from localhost ([::1]:44230 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kxTY3-0008C5-9m for larch@yhetil.org; Thu, 07 Jan 2021 06:33:47 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:59410) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kxTXg-0008AO-6H for guix-devel@gnu.org; Thu, 07 Jan 2021 06:33:24 -0500 Received: from mout02.posteo.de ([185.67.36.66]:38123) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kxTXb-000690-15 for guix-devel@gnu.org; Thu, 07 Jan 2021 06:33:22 -0500 Received: from submission (posteo.de [89.146.220.130]) by mout02.posteo.de (Postfix) with ESMTPS id 72A2E2400FF for ; Thu, 7 Jan 2021 12:33:16 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=posteo.net; s=2017; t=1610019196; bh=BxwBEBWSB+joU+m4hk7L2FOEqZxQdFLaD2hSGQZz3ew=; h=From:To:Cc:Subject:Date:From; b=YcI7xIT/QeHJROJ+BQMpseSJ4tzsChUR+VP5c0yh+ZOdrP0LuAFYniNnt9cSWSvVq QpwzPmGJyk/BT4nTHQiyD2vXmLtz4aWkVG07xUcnZNgLjHadp/EY0ec2e1Y51uLNNc IftGGdzSINGJQZ3RKBSBqrHcw4jZTGAa+9iLdRTybjL0lniOtar/FC5of9Kh9iZwxl KY/B6CMi86YTjZy2ix8n0W7InX95gmzD0grYu2OJukfJ5l2hZnk7BdNFRzihZff6Cf FWfmsNQqOuNPH9/YjdRKmQ//0O+BcA7V14oHER6OfsobtI7P6/BHSZaTreAoYnXiNY zfKRIoZp8c0EA== Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 4DBPHZ5ZlQz6tmV; Thu, 7 Jan 2021 12:33:14 +0100 (CET) References: <87im94qbby.fsf@gnu.org> <94405d66-b13c-e6e6-e8d5-df23b93e5d97@web.de> <87im92voqw.fsf@dismail.de> <87ft3d2fge.fsf@yamatai> <87czyhc8q2.fsf@ambrevar.xyz> User-agent: mu4e 1.4.13; emacs 27.1 From: Guillaume Le Vaillant To: Pierre Neidhardt Subject: Re: When substitute download + decompression is CPU-bound In-reply-to: <87czyhc8q2.fsf@ambrevar.xyz> Date: Thu, 07 Jan 2021 12:33:10 +0100 Message-ID: <87czyh2d8p.fsf@yamatai> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha512; protocol="application/pgp-signature" Received-SPF: pass client-ip=185.67.36.66; envelope-from=glv@posteo.net; helo=mout02.posteo.de X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham 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: -2.85 Authentication-Results: aspmx1.migadu.com; dkim=fail (headers rsa verify failed) header.d=posteo.net header.s=2017 header.b=YcI7xIT/; dmarc=fail reason="SPF not aligned (strict)" header.from=posteo.net (policy=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: BD99F9403A9 X-Spam-Score: -2.85 X-Migadu-Scanner: scn0.migadu.com X-TUID: IeXjQ5mIfT1g --=-=-= Content-Type: text/plain Pierre Neidhardt skribis: > 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? > It was just to get a better idea of the relative compression and decompression speeds of the algorithms. When using n threads, if the file is big enough, the speeds are almost multiplied by n and the compression ratio is a little lower. >> Machine used for the tests: >> - CPU: Intel i7-3630QM >> - RAM: 16 MiB > > I suppose you meant 16 GiB ;) Yes, of course :) --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iIUEAREKAC0WIQTLxZxm7Ce5cXlAaz5r6CCK3yH+PwUCX/bxdg8cZ2x2QHBvc3Rl by5uZXQACgkQa+ggit8h/j92kgD/YzfquCf7xIqiyHBCCbatOcFQXfO7giqapqnl OwNcpycA/jzUmVGGVEmvA+GFi7TFBC7+AnN4uYmOEhrgh0vLc9y5 =uqNj -----END PGP SIGNATURE----- --=-=-=--