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[95.244.155.253]) by smtp.gmail.com with ESMTPSA id u26sm35990603wmm.24.2020.12.15.02.03.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 15 Dec 2020 02:03:07 -0800 (PST) From: =?utf-8?Q?Nicol=C3=B2?= Balzarotti To: Pierre Neidhardt , Ludovic =?utf-8?Q?Court=C3=A8s?= , guix-devel Subject: Re: When substitute download + decompression is CPU-bound In-Reply-To: <87im93bdj1.fsf@ambrevar.xyz> 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> <87im93bdj1.fsf@ambrevar.xyz> Date: Tue, 15 Dec 2020 11:03:06 +0100 Message-ID: <87k0tjo085.fsf@guixSD.i-did-not-set--mail-host-address--so-tickle-me> MIME-Version: 1.0 Content-Type: text/plain Received-SPF: pass client-ip=2a00:1450:4864:20::32b; envelope-from=anothersms@gmail.com; helo=mail-wm1-x32b.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 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, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, 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: , Errors-To: guix-devel-bounces+larch=yhetil.org@gnu.org Sender: "Guix-devel" X-Migadu-Flow: FLOW_IN X-Migadu-Spam-Score: -3.01 Authentication-Results: aspmx1.migadu.com; dkim=pass header.d=gmail.com header.s=20161025 header.b=mvwxWDEA; dmarc=pass (policy=none) header.from=gmail.com; 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: 9E5149403AC X-Spam-Score: -3.01 X-Migadu-Scanner: scn0.migadu.com X-TUID: hGnWkBhcMXJL Pierre Neidhardt writes: > > What do you mean? > If you download multiple files at a time, you might end up decompressing them simultaneously. Plzip won't help then on a dual core machine, where you might end up being cpu bound again then. Is this right? If it is, reducing the overall cpu usage seems to be a better approach in the long term.