From mboxrd@z Thu Jan 1 00:00:00 1970 X-GM-THRID: 7120559452426600448 X-Received: by 2002:aa7:9d8a:0:b0:52a:bb32:528f with SMTP id f10-20020aa79d8a000000b0052abb32528fmr14357016pfq.0.1657892845565; Fri, 15 Jul 2022 06:47:25 -0700 (PDT) X-BeenThere: isar-users@googlegroups.com Received: by 2002:a17:902:d4d1:b0:16c:433f:7b70 with SMTP id o17-20020a170902d4d100b0016c433f7b70ls7182535plg.9.gmail; Fri, 15 Jul 2022 06:47:24 -0700 (PDT) X-Google-Smtp-Source: AGRyM1tjC6gmo4FNGSm7JJQhpjGZKfoVp1BDCyVyNCqX/s3S8yyBm+O4eqYkFt6B/I83xG93008t X-Received: by 2002:a17:902:eaca:b0:16b:dbde:130d with SMTP id p10-20020a170902eaca00b0016bdbde130dmr13576394pld.48.1657892844748; Fri, 15 Jul 2022 06:47:24 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1657892844; cv=none; d=google.com; s=arc-20160816; b=Uf3YGGTAl9QMyOHljZoR5doE07lbAKfWEqjvE1jPztDscgvvRfYiv6Y8hew3Ogbeg8 wCZes9f/MF0z0uQaV9rHX7Kjd5BTLKdJWLCtaTrIoVxB26doTFk3NGSfpD0HQX3rc8zJ bBTkXwItY/gTOkNeKZ8lqdbqvHz7hyOG4YVrdZQwYa1dsF89WBaF825PRJ8LjJq1y6Kb FIdqRUDZMdBFkZAxcAhrR8YVFrvFvl9Ct2qIHzlD/dd9izIWX2JmmkBmbiRdIPoant+k drhOmSZ1UGcm/jvhXmr4x/7glpJZHDiefV1sn26++lfeLo2b8ghBkpVIgTKca7q9d9gZ e8hw== 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=IZLgxqMEp6jB4fRY++3w4MyVb8V84Z6Bo+cp2/3rYdg=; b=ON3p3klLbWIL61QYN0/FmVzjG7jIgzU4itunvfi4xy+7TKUNbWyS/qH6Hy9x+XKpnC Qurn/rgV/mYtIjEsrSysEd78icKhVFKOGmXjqX4fxqtQ7Rkm8o7Oy3iuM8BwIgWEJCrc chY4gAogwyReoenB78EvF95wAgSxDj2stgs0Oz9dqiHuOJiL9uz5yaRk11glbfUuy2hQ K0SeLikGz0UypwGFE12dJhzQsbhdGaLj2jexuwoagGMLoPUgbZg213FsyzFvL9+0h1Ex HzZ7YJMencWcawzJw5iM+BbaqA6Pk+YQkrJcWW1cMC8RHwzJCzLyNvIkV3+73XKIRtxT MkNQ== 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 f11-20020a17090ab94b00b001ef94afbc2esi408429pjw.2.2022.07.15.06.47.24 for (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Fri, 15 Jul 2022 06:47:24 -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 26FDlLUd028927 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT) for ; Fri, 15 Jul 2022 15:47:22 +0200 Date: Fri, 15 Jul 2022 15:47:20 +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> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: 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: TIQCmkGAVFfa Hello Felix, On Fri, Jul 15, 2022 at 01:27:27PM +0000, Moessbauer, Felix wrote: > Please also have a look at the reproducibility section of dpkg-buildflags. > The only reason the kernel is affected from this is, that the kbuild only uses KCFLAGS, not CFLAGS. > At least the flags about reproducibility should be added to all kernel builds done via ISAR. IIUC, the non-reproducibility comes from the absolute paths in the debug info -- we'll have a look, maybe those could be replaced with relative ones. I haven't deeply looked at reproducible packages, could you please elaborate on the KCFLAGS vs. CFLAGS distinction mattering here? With kind regards, Baurzhan