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Cc: Efraim Flashner Subject: Re: Are 'guix gc' stats exaggerated? In-Reply-To: <87tti640kw.fsf@gnu.org> References: <87bk4stjpi.fsf@lease-up.com> <87a5k5oczg.fsf@lease-up.com> <87tti640kw.fsf@gnu.org> Date: Thu, 06 Jun 2024 12:32:52 -0700 Message-ID: <877cf1amu3.fsf@lease-up.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Received-SPF: pass client-ip=208.82.101.137; envelope-from=felix.lechner@lease-up.com; helo=sail-ipv4.us-core.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, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action 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: , Reply-to: Felix Lechner From: Felix Lechner via "Development of GNU Guix and the GNU System distribution." Errors-To: guix-devel-bounces+larch=yhetil.org@gnu.org Sender: guix-devel-bounces+larch=yhetil.org@gnu.org X-Migadu-Country: US X-Migadu-Flow: FLOW_IN X-Migadu-Queue-Id: 43D5513F89 X-Migadu-Scanner: mx12.migadu.com X-Migadu-Spam-Score: -5.84 X-Spam-Score: -5.84 X-TUID: aOpAGsg4sg5h Hi Ludo' On Thu, Jun 06 2024, Ludovic Court=C3=A8s wrote: > Where does that 3:1 figure come from? Efraim's experience, I believe. > Where do you see that in the code? After checking > =E2=80=98removeUnusedLinks=E2=80=99, I think it counts space savings righ= t. Sorry, I didn't look at the code. I was merely prompted to speculate by the mentioning of hard links and inferred wrongly, it seems, that the discrepancy was related---although in fairness I also doubted that a fixed 3:1 ratio could be credibly explained by deduplication alone. Also, I don't mean to appear critical. Thanks to everyone for your hard work on Guix! Kind regards Felix