From mboxrd@z Thu Jan 1 00:00:00 1970 X-GM-THRID: 7120559452426600448 X-Received: by 2002:a05:620a:29d6:b0:6b5:bd2a:7d6c with SMTP id s22-20020a05620a29d600b006b5bd2a7d6cmr7867573qkp.322.1657893019485; Fri, 15 Jul 2022 06:50:19 -0700 (PDT) X-BeenThere: isar-users@googlegroups.com Received: by 2002:a05:622a:1702:b0:304:c381:99a3 with SMTP id h2-20020a05622a170200b00304c38199a3ls639903qtk.5.-pod-prod-gmail; Fri, 15 Jul 2022 06:50:19 -0700 (PDT) X-Google-Smtp-Source: AGRyM1tj89+NIgujGfxeZ2Mcfj82LamvS2PdN0nNWSP4DDIOc9K7NmF6EIg+RuAOA6kdZmpCd/0n X-Received: by 2002:ac8:5d49:0:b0:31e:cd0e:ecb4 with SMTP id g9-20020ac85d49000000b0031ecd0eecb4mr10732957qtx.30.1657893019009; Fri, 15 Jul 2022 06:50:19 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1657893019; cv=none; d=google.com; s=arc-20160816; b=BswKhT08stErd0/6dz6qmFImKCUvT277btwrHtV0x8Tmj/7QcxZ8bqCm4iaTmJG8PE pbjhEw99QdsU+p0bZrQrnEGEQXpuV6eJACRG+XbOa/8jnyvGmrZyKTS6K1bF3KN5Zjut u6t58qealg3GslpIhBCg/2KbPJXXIJRhNwwjz0B86bgRyCUVrlCuwyW9ALWa+p+F0uXH VJwsHqyBN1zl6lYBCrRt4/zUFoxzwMWGnqYxQoDlLEvts3uup4D0FPmFbyFSYQXfomE3 5HyCQSDGIz9nCXgUqDsyf9u6omDdY4bAgwBBv+SD7E5RBJ0NMPlQs6qtjGYeck/WXaN7 3hZA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=in-reply-to:content-disposition:mime-version:references :mail-followup-to:message-id:subject:to:from:date; bh=uHkvHoIysNiemtxzBkoc4BuS6DO5pB3UFRvfLlKeKY0=; b=JmXoGmjWigyPoOEE6oYEuDU42lbpEa02Cjq1SZ+F221BF2kixl8+LqD8nd5t1LS+MA T+G3xYhJG2Q1kIrmEMoqxGXczHAj/gnJ30qI2S7WheTMnwYTZqwT5054/vdUeQB32lmt oWKOmL9hmmXV2ebDGbjgo0gFm9yABxRNsm9peJhI3QUhoh31RlaLithcezmN/QC8U0Vv AxlfkjJ9TnWupqb8QilP/MYd5CUoLCvXme+rDQezWauij9HNWSP9wRC1d4lKRfC+hQcZ AhvOl0vyIKxjn3oMPNJBARYEiDp+EhriT/uEXqnvs3+RPllYRmFxn7nYD8GJWPPEpG7c swcw== ARC-Authentication-Results: i=1; gmr-mx.google.com; spf=neutral (google.com: 85.214.156.166 is neither permitted nor denied by best guess record for domain of ibr@radix50.net) smtp.mailfrom=ibr@radix50.net Return-Path: Received: from shymkent.ilbers.de (shymkent.ilbers.de. [85.214.156.166]) by gmr-mx.google.com with ESMTPS id d24-20020a05620a167800b006aeff3f2eb2si197916qko.0.2022.07.15.06.50.18 for (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Fri, 15 Jul 2022 06:50:18 -0700 (PDT) Received-SPF: neutral (google.com: 85.214.156.166 is neither permitted nor denied by best guess record for domain of ibr@radix50.net) client-ip=85.214.156.166; Authentication-Results: gmr-mx.google.com; spf=neutral (google.com: 85.214.156.166 is neither permitted nor denied by best guess record for domain of ibr@radix50.net) smtp.mailfrom=ibr@radix50.net Received: from ilbers.de (host-80-81-17-52.static.customer.m-online.net [80.81.17.52]) (authenticated bits=0) by shymkent.ilbers.de (8.15.2/8.15.2/Debian-8+deb9u1) with ESMTPSA id 26FDoFSH028952 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT) for ; Fri, 15 Jul 2022 15:50:16 +0200 Date: Fri, 15 Jul 2022 15:50:15 +0200 From: Baurzhan Ismagulov To: isar-users@googlegroups.com Subject: Re: [PATCH] sbuild: Fix low hit ratio for ccache on linux kernel rebuild Message-ID: Mail-Followup-To: isar-users@googlegroups.com References: <20220715112716.2460-1-ubely@ilbers.de> <25512947.1r3eYUQgxm@home> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <25512947.1r3eYUQgxm@home> X-Spam-Status: No, score=-1.0 required=5.0 tests=ALL_TRUSTED autolearn=unavailable autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on shymkent.ilbers.de X-TUID: eQE/maY7whKD On Fri, Jul 15, 2022 at 04:44:29PM +0300, Uladzimir Bely wrote: > It can be moved to the kernel recipe, but you left me a bit confused. Why > changing of build directory from some random (from build to build) path to > some fixed one (the same hash on every rebuild) makes the build less > reproducible? Debian wants to have identical binary package contents from different builds, see https://wiki.debian.org/ReproducibleBuilds. I don't know by heart whether / how that works for debug info, though. Seems that at least absolute paths should be a no-go. With kind regards, Baurzhan