From unknown Tue Jun 17 22:29:55 2025 X-Loop: help-debbugs@gnu.org Subject: bug#55721: Low cache usage in the presence of grafts Resent-From: Ludovic =?UTF-8?Q?Court=C3=A8s?= Original-Sender: "Debbugs-submit" Resent-CC: bug-guix@gnu.org Resent-Date: Mon, 30 May 2022 08:44:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: report 55721 X-GNU-PR-Package: guix X-GNU-PR-Keywords: To: 55721@debbugs.gnu.org X-Debbugs-Original-To: bug-guix@gnu.org Received: via spool by submit@debbugs.gnu.org id=B.16539002343579 (code B ref -1); Mon, 30 May 2022 08:44:01 +0000 Received: (at submit) by debbugs.gnu.org; 30 May 2022 08:43:54 +0000 Received: from localhost ([127.0.0.1]:42698 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1nvb0E-0000vf-4i for submit@debbugs.gnu.org; Mon, 30 May 2022 04:43:54 -0400 Received: from lists.gnu.org ([209.51.188.17]:52280) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1nvb09-0000vV-K8 for submit@debbugs.gnu.org; Mon, 30 May 2022 04:43:53 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:48462) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nvb09-0000mo-Ci for bug-guix@gnu.org; Mon, 30 May 2022 04:43:49 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]:33520) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nvb08-0002KY-Ih for bug-guix@gnu.org; Mon, 30 May 2022 04:43:49 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=MIME-Version:Date:Subject:To:From:in-reply-to: references; bh=jEeq2IgyuhlSL6RWD794ydlSYbLNcQTY2rf8zffEoDo=; b=F2MBNz9mlZbOPY BrkDsWVlubQzAMK8tks8DW5FiKf+Wekjuotm1963n4+AF2TFSx1yCn4z0fVRb1rJqP6+I92JsiYCM blp9U4SqVkgYQloHH1u7WlV7l0uxnShxPuXAgpCCAKkGGKShR0SEh0rgyxsSLyVBAkEbAKUJdFhAW vv6+lf0mNBEcu3SmbAWXe0324opi9fJSn56alh+Pi+cj8zEGhLHdcC0XJxsp8HnN/DVEwbs3o5Wj/ uuqUW8mt22gzLFEpc2GC0AQ0V1a7NtIFJ/afRT4YOwpkKya3BEMFZkyiasiRXfDNjlDScDQutxjgm Q9HT6eQV+eSKknw5heFw==; Received: from [193.50.110.143] (port=37288 helo=ribbon) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nvb08-0003Su-1h for bug-guix@gnu.org; Mon, 30 May 2022 04:43:48 -0400 From: Ludovic =?UTF-8?Q?Court=C3=A8s?= X-URL: http://www.fdn.fr/~lcourtes/ X-Revolutionary-Date: Primidi 11 Prairial an 230 de la =?UTF-8?Q?R=C3=A9volution,?= jour de la Fraise X-PGP-Key-ID: 0x090B11993D9AEBB5 X-PGP-Key: http://www.fdn.fr/~lcourtes/ludovic.asc X-PGP-Fingerprint: 3CE4 6455 8A84 FDC6 9DB4 0CFB 090B 1199 3D9A EBB5 X-OS: x86_64-pc-linux-gnu Date: Mon, 30 May 2022 10:43:46 +0200 Message-ID: <87y1yj5s1p.fsf@inria.fr> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Spam-Score: -1.8 (-) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -2.8 (--) The use of per-session caches in the presence of grafts is low=E2=80=94specifically when =E2=80=9Cbuild handlers=E2=80=9D are invoked. This is illustrated by the example below: =E2=80=A2 the first run invokes the build handler of =E2=80=98map/accumul= ate-builds=E2=80=99 to download polkit (which has a =E2=80=98replacement=E2=80=99) and then= proceeds (the end result was already in store), taking no less than 6m of CPU time; =E2=80=A2 the second run doesn=E2=80=99t have to hop through the build ha= ndler since everything is already in store and its takes 24s of CPU time. --8<---------------cut here---------------start------------->8--- $ guix gc -D $(guix build polkit --no-grafts) finding garbage collector roots... [0 MiB] deleting '/gnu/store/8vsfk8312m5p461wl4dq5lxjagfbwfhz-polkit-0.121' deleting `/gnu/store/trash' deleting unused links... note: currently hard linking saves 72385.53 MiB $ time GUIX_PROFILING=3D"rpc reference-cache derivation-graft-cache" ./pre-= inst-env guix system vm gnu/system/examples/desktop.tmpl=20 0.2 MB will be downloaded polkit-0.121 198KiB = 1.4MiB/s 00:00 [##################] 100.0% /gnu/store/sk1571rnh5jl2ilp0v1k8bqwsdrngwxy-run-vm.sh Reference Cache: fresh caches: 8 lookups: 77581 hits: 52890 (68.2%) cache size: 838 entries Derivation graft cache: fresh caches: 39 lookups: 704635 hits: 627819 (89.1%) cache size: 2946 entries Remote procedure call summary: 33071 RPCs built-in-builders ... 1 query-substitutable-path-infos ... 2 build-things ... 2 add-to-store/tree ... 56 valid-path? ... 59 add-to-store ... 373 add-text-to-store ... 7887 query-references ... 24691 real 5m6.727s user 6m59.438s sys 0m1.633s $ time GUIX_PROFILING=3D"rpc reference-cache derivation-graft-cache" ./pre-= inst-env guix system vm gnu/system/examples/desktop.tmpl=20 /gnu/store/sk1571rnh5jl2ilp0v1k8bqwsdrngwxy-run-vm.sh Reference Cache: fresh caches: 1 lookups: 2988 hits: 2150 (72.0%) cache size: 838 entries Derivation graft cache: fresh caches: 5 lookups: 28323 hits: 25376 (89.6%) cache size: 2946 entries Remote procedure call summary: 9159 RPCs query-substitutable-path-infos ... 1 build-things ... 1 built-in-builders ... 1 valid-path? ... 2 add-to-store/tree ... 56 add-to-store ... 373 query-references ... 838 add-text-to-store ... 7887 real 0m17.304s user 0m24.620s sys 0m0.273s $ git log |head commit acb08304c862d65679086a9f160240bfd598289d Author: Wiktor Zelazny Date: Wed May 18 16:20:30 2022 +0000 gnu: Add python-gpy. =20=20=20=20 * gnu/packages/python-science.scm (python-gpy): New variable. =20=20=20=20 Signed-off-by: Ludovic Court=C3=A8s --8<---------------cut here---------------end--------------->8--- >From the first run we can see that the reference cache (used by =E2=80=98references/cached=E2=80=99, itself called form (guix grafts)) is a= lmost unused since we end up making 24K =E2=80=98query-references=E2=80=99 RPCs for only= 838 entries in that cache, meaning the same work is done ~29 times. My hypothesis is that this is a regression introduced by the switch to =E2=80=9Cfunctional caches=E2=80=9D in =E2=80=98core-updates=E2=80=99 back = in 9e5812ac59b01ff011ec0c5b0f437dfe85d6fcc7. Ludo=E2=80=99. From debbugs-submit-bounces@debbugs.gnu.org Mon May 30 05:09:40 2022 Received: (at control) by debbugs.gnu.org; 30 May 2022 09:09:40 +0000 Received: from localhost ([127.0.0.1]:42745 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1nvbPA-0001c6-Di for submit@debbugs.gnu.org; Mon, 30 May 2022 05:09:40 -0400 Received: from eggs.gnu.org ([209.51.188.92]:36944) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1nvbP6-0001bp-AB for control@debbugs.gnu.org; Mon, 30 May 2022 05:09:39 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]:33736) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nvbOz-00078W-MM for control@debbugs.gnu.org; Mon, 30 May 2022 05:09:31 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=MIME-version:Subject:From:To:Date:in-reply-to: references; bh=uS8jondEHotb0HUlz97AQGBLqlaYI7918F0T8RSFMAo=; b=dnvXg7WUZ86pkB EGECSE3SrBDUsDSAl/TKlQtV5+kRwKnL1+lXqeIw2EepMSJZi14abxOlyS+VXuVJydkkLq6jd4aIe 7CM3CPM5cBHq2iHEalc/iYR591rUlFYI06kVvnGT/pOUtuB70iKQXz2mcBUX9sJhzU1X4gf8FvEeJ oTMW0a7B03AAyudKPruBzuA4BYgyNmbPzlTJIxiZ5URjD1zhmlIePGJy4oX1TRJBXL1OHtmFgNrhG EPPRUpVnXANcJ6ufzAxfUHecR72rLqYgWPXYGcUAs/0yGGWgvCqknGiBTtzWYLesNn1olgYCCyUlK P8/ib07CmpQqe+P0gJeA==; Received: from [193.50.110.143] (port=35130 helo=ribbon) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nvbOy-0003rp-Md for control@debbugs.gnu.org; Mon, 30 May 2022 05:09:28 -0400 Date: Mon, 30 May 2022 11:09:25 +0200 Message-Id: <87wne35quy.fsf@gnu.org> To: control@debbugs.gnu.org From: =?utf-8?Q?Ludovic_Court=C3=A8s?= Subject: control message for bug #55721 MIME-version: 1.0 Content-type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: control X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -3.3 (---) severity 55721 important quit From unknown Tue Jun 17 22:29:55 2025 X-Loop: help-debbugs@gnu.org Subject: bug#55721: Low cache usage in the presence of grafts Resent-From: Ludovic =?UTF-8?Q?Court=C3=A8s?= Original-Sender: "Debbugs-submit" Resent-CC: bug-guix@gnu.org Resent-Date: Mon, 30 May 2022 09:32:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 55721 X-GNU-PR-Package: guix X-GNU-PR-Keywords: To: 55721@debbugs.gnu.org Received: via spool by 55721-submit@debbugs.gnu.org id=B55721.165390311916797 (code B ref 55721); Mon, 30 May 2022 09:32:02 +0000 Received: (at 55721) by debbugs.gnu.org; 30 May 2022 09:31:59 +0000 Received: from localhost ([127.0.0.1]:42776 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1nvbkl-0004Mq-4Z for submit@debbugs.gnu.org; Mon, 30 May 2022 05:31:59 -0400 Received: from eggs.gnu.org ([209.51.188.92]:47568) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1nvbki-0004Md-GE for 55721@debbugs.gnu.org; Mon, 30 May 2022 05:31:57 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]:33998) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nvbkd-0003Xd-8e for 55721@debbugs.gnu.org; Mon, 30 May 2022 05:31:51 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=MIME-Version:In-Reply-To:Date:References:Subject:To: From; bh=k+4hzhz3PbnpiGf0fYDnKHjcwShTug2upnqbtswpSx0=; b=OFtxj11mqFOE4XYkilLY +UIwk682kclJhLGoRh6BgoH5cKRN3sF7ZayAGDZbjA6VIkTXD6+8DbjB8Gaqc4Pa+TILXg+CDxRst R9AlsOHubY3obx0yVu+cV0o2SHXItv/PeCudFT7qf1EuYspXZLAR/ancmPv7tNmTCfr3oKmGNUz8B u3oEK7qaI1AQWUJFWV718UvK5eYVxO4w9KqU2ZqdPaAmyQjc3V3se5WHojaZtIrkFsZ5pEwNq8KSW 1yPDQrNdflTysBzR0XoFmRcFSioo4K3QOB7Y1Ye7HOF9wd2TEnWX9nh/BBzV4tFYWZhA5vkEB84p2 17JcBq+qRD47cQ==; Received: from [193.50.110.143] (port=38260 helo=ribbon) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nvbkc-0004UO-QJ for 55721@debbugs.gnu.org; Mon, 30 May 2022 05:31:51 -0400 From: Ludovic =?UTF-8?Q?Court=C3=A8s?= References: <87y1yj5s1p.fsf@inria.fr> Date: Mon, 30 May 2022 11:31:47 +0200 In-Reply-To: <87y1yj5s1p.fsf@inria.fr> ("Ludovic =?UTF-8?Q?Court=C3=A8s?="'s message of "Mon, 30 May 2022 10:43:46 +0200") Message-ID: <87pmjv5pto.fsf@gnu.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.1 (gnu/linux) MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="=-=-=" X-Spam-Score: -1.8 (-) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -2.8 (--) --=-=-= Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Ludovic Court=C3=A8s skribis: > $ time GUIX_PROFILING=3D"rpc reference-cache derivation-graft-cache" ./pr= e-inst-env guix system vm gnu/system/examples/desktop.tmpl=20 > 0.2 MB will be downloaded > polkit-0.121 198KiB = 1.4MiB/s 00:00 [##################] 100.0% > /gnu/store/sk1571rnh5jl2ilp0v1k8bqwsdrngwxy-run-vm.sh > Reference Cache: > fresh caches: 8 > lookups: 77581 > hits: 52890 (68.2%) > cache size: 838 entries > Derivation graft cache: > fresh caches: 39 > lookups: 704635 > hits: 627819 (89.1%) > cache size: 2946 entries > Remote procedure call summary: 33071 RPCs > built-in-builders ... 1 > query-substitutable-path-infos ... 2 > build-things ... 2 > add-to-store/tree ... 56 > valid-path? ... 59 > add-to-store ... 373 > add-text-to-store ... 7887 > query-references ... 24691 > > real 5m6.727s > user 6m59.438s > sys 0m1.633s With this patch: --=-=-= Content-Type: text/x-patch Content-Disposition: inline diff --git a/guix/store.scm b/guix/store.scm index efba07bdcd..88cab1bb6a 100644 --- a/guix/store.scm +++ b/guix/store.scm @@ -1337,7 +1337,12 @@ (define (build-accumulator expected-store) (if (and (eq? (store-connection-socket store) (store-connection-socket expected-store)) (= mode (build-mode normal))) - (unresolved things continue) + (unresolved things + (lambda (new-store value) + ;; Borrow caches from NEW-STORE. + (set-store-connection-caches! + store (store-connection-caches new-store)) + (continue value))) (continue #t)))) (define default-cutoff @@ -1397,7 +1402,8 @@ (define-values (result rest) (if (unresolved? obj) ;; Pass #f because 'build-things' is now ;; unnecessary. - ((unresolved-continuation obj) #f) + ((unresolved-continuation obj) + store #f) obj)) result #:cutoff cutoff) (map/accumulate-builds store proc rest #:cutoff cutoff))))) --=-=-= Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable =E2=80=A6 we=E2=80=99re doing better: --8<---------------cut here---------------start------------->8--- $ guix gc -D $(guix build polkit --no-grafts) finding garbage collector roots... [0 MiB] deleting '/gnu/store/8vsfk8312m5p461wl4dq5lxjagfbwfhz-polkit-0.121' deleting `/gnu/store/trash' deleting unused links... note: currently hard linking saves 72397.13 MiB $ time GUIX_PROFILING=3D"rpc reference-cache derivation-graft-cache" ./pre-= inst-env guix system vm gnu/system/examples/desktop.tmpl=20 0.2 MB will be downloaded polkit-0.121 198KiB = 1.6MiB/s 00:00 [##################] 100.0% /gnu/store/wp3lv4xrh6vw79gnkyi5471c1l8j624n-run-vm.sh Reference Cache: fresh caches: 8 lookups: 17232 hits: 14816 (86.0%) cache size: 784 entries Derivation graft cache: fresh caches: 39 lookups: 128402 hits: 111336 (86.7%) cache size: 328 entries Remote procedure call summary: 10796 RPCs built-in-builders ... 1 query-substitutable-path-infos ... 2 build-things ... 2 add-to-store/tree ... 56 valid-path? ... 59 add-to-store ... 373 query-references ... 2416 add-text-to-store ... 7887 real 1m31.550s user 2m7.107s sys 0m0.637s --8<---------------cut here---------------end--------------->8--- There=E2=80=99s still room for improvement though. Ludo=E2=80=99. --=-=-=-- From unknown Tue Jun 17 22:29:55 2025 X-Loop: help-debbugs@gnu.org Subject: bug#55721: Low cache usage in the presence of grafts Resent-From: Efraim Flashner Original-Sender: "Debbugs-submit" Resent-CC: bug-guix@gnu.org Resent-Date: Mon, 30 May 2022 11:36:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 55721 X-GNU-PR-Package: guix X-GNU-PR-Keywords: To: Ludovic =?UTF-8?Q?Court=C3=A8s?= Cc: 55721@debbugs.gnu.org Received: via spool by 55721-submit@debbugs.gnu.org id=B55721.165391053214593 (code B ref 55721); Mon, 30 May 2022 11:36:02 +0000 Received: (at 55721) by debbugs.gnu.org; 30 May 2022 11:35:32 +0000 Received: from localhost ([127.0.0.1]:42954 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1nvdgJ-0003nJ-Cv for submit@debbugs.gnu.org; Mon, 30 May 2022 07:35:31 -0400 Received: from flashner.co.il ([178.62.234.194]:51146) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1nvdgE-0003mu-Kj for 55721@debbugs.gnu.org; Mon, 30 May 2022 07:35:30 -0400 Received: from localhost (unknown [141.226.14.232]) by flashner.co.il (Postfix) with ESMTPSA id A3547401C5; Mon, 30 May 2022 11:35:20 +0000 (UTC) Date: Mon, 30 May 2022 14:34:40 +0300 From: Efraim Flashner Message-ID: Mail-Followup-To: Efraim Flashner , Ludovic =?UTF-8?Q?Court=C3=A8s?= , 55721@debbugs.gnu.org References: <87y1yj5s1p.fsf@inria.fr> <87pmjv5pto.fsf@gnu.org> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="el+JekaWj0IAG2lS" Content-Disposition: inline In-Reply-To: <87pmjv5pto.fsf@gnu.org> X-PGP-Key-ID: 0x41AAE7DCCA3D8351 X-PGP-Key: https://flashner.co.il/~efraim/efraim_flashner.asc X-PGP-Fingerprint: A28B F40C 3E55 1372 662D 14F7 41AA E7DC CA3D 8351 X-Spam-Score: 0.5 (/) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -0.5 (/) --el+JekaWj0IAG2lS Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, May 30, 2022 at 11:31:47AM +0200, Ludovic Court=C3=A8s wrote: > Ludovic Court=C3=A8s skribis: >=20 > > $ time GUIX_PROFILING=3D"rpc reference-cache derivation-graft-cache" ./= pre-inst-env guix system vm gnu/system/examples/desktop.tmpl=20 > > 0.2 MB will be downloaded > > polkit-0.121 198KiB = 1.4MiB/s 00:00 [##################] 100.0% > > /gnu/store/sk1571rnh5jl2ilp0v1k8bqwsdrngwxy-run-vm.sh > > Reference Cache: > > fresh caches: 8 > > lookups: 77581 > > hits: 52890 (68.2%) > > cache size: 838 entries > > Derivation graft cache: > > fresh caches: 39 > > lookups: 704635 > > hits: 627819 (89.1%) > > cache size: 2946 entries > > Remote procedure call summary: 33071 RPCs > > built-in-builders ... 1 > > query-substitutable-path-infos ... 2 > > build-things ... 2 > > add-to-store/tree ... 56 > > valid-path? ... 59 > > add-to-store ... 373 > > add-text-to-store ... 7887 > > query-references ... 24691 > > > > real 5m6.727s > > user 6m59.438s > > sys 0m1.633s >=20 > With this patch: >=20 > diff --git a/guix/store.scm b/guix/store.scm > index efba07bdcd..88cab1bb6a 100644 > --- a/guix/store.scm > +++ b/guix/store.scm > @@ -1337,7 +1337,12 @@ (define (build-accumulator expected-store) > (if (and (eq? (store-connection-socket store) > (store-connection-socket expected-store)) > (=3D mode (build-mode normal))) > - (unresolved things continue) > + (unresolved things > + (lambda (new-store value) > + ;; Borrow caches from NEW-STORE. > + (set-store-connection-caches! > + store (store-connection-caches new-store)) > + (continue value))) > (continue #t)))) > =20 > (define default-cutoff > @@ -1397,7 +1402,8 @@ (define-values (result rest) > (if (unresolved? obj) > ;; Pass #f because 'build-thin= gs' is now > ;; unnecessary. > - ((unresolved-continuation obj)= #f) > + ((unresolved-continuation obj) > + store #f) > obj)) > result #:cutoff cutoff) > (map/accumulate-builds store proc rest #:cutoff cutoff))))) >=20 > =E2=80=A6 we=E2=80=99re doing better: >=20 > --8<---------------cut here---------------start------------->8--- > $ guix gc -D $(guix build polkit --no-grafts) > finding garbage collector roots... > [0 MiB] deleting '/gnu/store/8vsfk8312m5p461wl4dq5lxjagfbwfhz-polkit-0.12= 1' > deleting `/gnu/store/trash' > deleting unused links... > note: currently hard linking saves 72397.13 MiB > $ time GUIX_PROFILING=3D"rpc reference-cache derivation-graft-cache" ./pr= e-inst-env guix system vm gnu/system/examples/desktop.tmpl=20 > 0.2 MB will be downloaded > polkit-0.121 198KiB = 1.6MiB/s 00:00 [##################] 100.0% > /gnu/store/wp3lv4xrh6vw79gnkyi5471c1l8j624n-run-vm.sh > Reference Cache: > fresh caches: 8 > lookups: 17232 > hits: 14816 (86.0%) > cache size: 784 entries > Derivation graft cache: > fresh caches: 39 > lookups: 128402 > hits: 111336 (86.7%) > cache size: 328 entries > Remote procedure call summary: 10796 RPCs > built-in-builders ... 1 > query-substitutable-path-infos ... 2 > build-things ... 2 > add-to-store/tree ... 56 > valid-path? ... 59 > add-to-store ... 373 > query-references ... 2416 > add-text-to-store ... 7887 >=20 > real 1m31.550s > user 2m7.107s > sys 0m0.637s > --8<---------------cut here---------------end--------------->8--- >=20 > There=E2=80=99s still room for improvement though. >=20 > Ludo=E2=80=99. With that change you've dropped the query-references from 24691 to 2416, more than a 90% drop. If you want to take aim at improving it further I'd say take a look at add-text-to-store and see if you can shrink that number. --=20 Efraim Flashner =D7=90=D7=A4=D7=A8=D7=99=D7=9D = =D7=A4=D7=9C=D7=A9=D7=A0=D7=A8 GPG key =3D A28B F40C 3E55 1372 662D 14F7 41AA E7DC CA3D 8351 Confidentiality cannot be guaranteed on emails sent or received unencrypted --el+JekaWj0IAG2lS Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEoov0DD5VE3JmLRT3Qarn3Mo9g1EFAmKUq80ACgkQQarn3Mo9 g1GdUQ/+N9nCWMi99+De+8gC7kx0N9TfrtbVt0W6vNuzuhc2g5CjDV0/Wm6foo6W 08Mn7bqwMdXJZ4zQshYq5WTKo38Yeie5C7xQ6dFp8cyrWMkicBPhig/XGfo3Whto A3BZ2xOtmpDclUlpwaF4GOxXbcgAEPxLutAjtZYsK4SJdxysAnKEbcWmDQqhFp4G wNZH0ubpnIp2LODdBDi9iL8RmrhUNIhIbFucNYM+QKUGM0A5717vNjS4p/BLPkGu Bw4uqPutweFuvVushzobTctLBN4C9jaizsneukKwBqeZyQSzWqk0j9b1UuUg+3Ev 8bqBL4l0+Jpw/KNl37MNAQ8WZ5gjp92NxfWNeMUDdEweN2eN0sFlEjcDLzVAK5Uc 99+6L4ZsNdlt6cpmmS8zI5pdEvtQCVl9uIzXjXYvexkOjk0cbElXctNv6sPSPhpg HvImJbQTqyGCafQdBaS8V4L5xp7c2TalGooCDgA4nb+vKLy8o5v/36sGA6OjcNp4 uLVV5uzI+U4Ts3UrcHO59/hFy8ZHpE0FKkFzD1PChIIFa5Yt3sMB+d9xjRFsW8pg +iwL85Hgc0DbPhYr9YlB3Onmzj1N01xikLbX9fgJ/2hKNjADxb3c7bqX+nUOBQIa /nvX/GZJlSq0g20lHiPAkRo3w0P1iTBRZxzSs7A5YnfskaqePAk= =f62t -----END PGP SIGNATURE----- --el+JekaWj0IAG2lS-- From unknown Tue Jun 17 22:29:55 2025 X-Loop: help-debbugs@gnu.org Subject: bug#55721: Low cache usage in the presence of grafts Resent-From: Ludovic =?UTF-8?Q?Court=C3=A8s?= Original-Sender: "Debbugs-submit" Resent-CC: bug-guix@gnu.org Resent-Date: Mon, 30 May 2022 13:16:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 55721 X-GNU-PR-Package: guix X-GNU-PR-Keywords: To: Efraim Flashner Cc: 55721@debbugs.gnu.org Received: via spool by 55721-submit@debbugs.gnu.org id=B55721.165391653827175 (code B ref 55721); Mon, 30 May 2022 13:16:01 +0000 Received: (at 55721) by debbugs.gnu.org; 30 May 2022 13:15:38 +0000 Received: from localhost ([127.0.0.1]:43292 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1nvfFB-00074A-VR for submit@debbugs.gnu.org; Mon, 30 May 2022 09:15:38 -0400 Received: from eggs.gnu.org ([209.51.188.92]:52976) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1nvfF9-00073o-5C for 55721@debbugs.gnu.org; Mon, 30 May 2022 09:15:36 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]:37740) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nvfF3-00018d-08; Mon, 30 May 2022 09:15:29 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=MIME-Version:In-Reply-To:Date:References:Subject:To: From; bh=SNahPy8LZ5D7E5jRZF7czYz1VorlMORnvLke+mDevqg=; b=d/P7Ic20BCzVtDeva49U K7cv5ISGNLq2ozwK8p+ABIHh03phoh+qKuqyI/iwJSmTtPnbHyFJk5OKF2w9I67h7YSXB6ix08CrC vdRkl2+7AlHOU4VSHGiBAyfVWooi0Kg5qUku/95kgAMJU+Mzu2bqn9dW+/oXwgwrBQopKgrmHPXB9 k5DuS9BkCyTf/qL9+KpW+8fB0+LcSY+tN10++r5SdVvrr35GTTJuMfpjITkaLs+la9SC4z4smJSaN UGsgSEUuVgcbaKzx0C0XZqQ8bppcNRvhrTpgOe+/PAA7+k4nVfs8zkJmhH9BqjAM3MfQrNr5F4Y1V z2UHDTn92ZzrHg==; Received: from [193.50.110.143] (port=50948 helo=ribbon) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nvfEk-00080i-03; Mon, 30 May 2022 09:15:27 -0400 From: Ludovic =?UTF-8?Q?Court=C3=A8s?= References: <87y1yj5s1p.fsf@inria.fr> <87pmjv5pto.fsf@gnu.org> X-URL: http://www.fdn.fr/~lcourtes/ X-Revolutionary-Date: Primidi 11 Prairial an 230 de la =?UTF-8?Q?R=C3=A9volution,?= jour de la Fraise X-PGP-Key-ID: 0x090B11993D9AEBB5 X-PGP-Key: http://www.fdn.fr/~lcourtes/ludovic.asc X-PGP-Fingerprint: 3CE4 6455 8A84 FDC6 9DB4 0CFB 090B 1199 3D9A EBB5 X-OS: x86_64-pc-linux-gnu Date: Mon, 30 May 2022 15:15:07 +0200 In-Reply-To: (Efraim Flashner's message of "Mon, 30 May 2022 14:34:40 +0300") Message-ID: <87bkvf5fhg.fsf@gnu.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Spam-Score: -2.3 (--) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -3.3 (---) Hi, Efraim Flashner skribis: > With that change you've dropped the query-references from 24691 to 2416, > more than a 90% drop. If you want to take aim at improving it further > I'd say take a look at add-text-to-store and see if you can shrink that > number. That=E2=80=99s not related to grafts though: these =E2=80=98add-text-to-sto= re=E2=80=99 RPCs correspond to adding the *-guile-builder files to the store, roughly one per package. This could be improved, for instance by having a single *-guile-builder script for all of =E2=80=98gnu-build-system=E2=80=99; that requires a bit o= f work. Ludo=E2=80=99. From unknown Tue Jun 17 22:29:55 2025 MIME-Version: 1.0 X-Mailer: MIME-tools 5.505 (Entity 5.505) X-Loop: help-debbugs@gnu.org From: help-debbugs@gnu.org (GNU bug Tracking System) To: Ludovic =?UTF-8?Q?Court=C3=A8s?= Subject: bug#55721: closed (Re: bug#55721: Low cache usage in the presence of grafts) Message-ID: References: <877d633x1f.fsf@gnu.org> <87y1yj5s1p.fsf@inria.fr> X-Gnu-PR-Message: they-closed 55721 X-Gnu-PR-Package: guix Reply-To: 55721@debbugs.gnu.org Date: Mon, 30 May 2022 14:40:02 +0000 Content-Type: multipart/mixed; boundary="----------=_1653921602-9254-1" This is a multi-part message in MIME format... ------------=_1653921602-9254-1 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Your bug report #55721: Low cache usage in the presence of grafts which was filed against the guix package, has been closed. The explanation is attached below, along with your original report. If you require more details, please reply to 55721@debbugs.gnu.org. --=20 55721: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D55721 GNU Bug Tracking System Contact help-debbugs@gnu.org with problems ------------=_1653921602-9254-1 Content-Type: message/rfc822 Content-Disposition: inline Content-Transfer-Encoding: 7bit Received: (at 55721-done) by debbugs.gnu.org; 30 May 2022 14:39:19 +0000 Received: from localhost ([127.0.0.1]:45708 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1nvgXw-0002N7-5U for submit@debbugs.gnu.org; Mon, 30 May 2022 10:39:19 -0400 Received: from eggs.gnu.org ([209.51.188.92]:55376) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1nvgXs-0002MR-Ly for 55721-done@debbugs.gnu.org; Mon, 30 May 2022 10:39:03 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]:39032) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nvgXn-0001as-EN for 55721-done@debbugs.gnu.org; Mon, 30 May 2022 10:38:55 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=MIME-Version:In-Reply-To:Date:References:Subject:To: From; bh=1MBqjIrgQwEbyGn2bbZYnp/sXCgKC4EdigN5+XCk3cU=; b=YsV5Xa0/G1gPf2yhCQnS 4zQIg+xWJsAw/AV7iHgOpfjyXtJdmEtiAzypiAgmSM0qRZSGiBof+RuIlOcxwsayMJhSDykT82vcU tgAUs5VTVY5Q0aFCClWZ0B0z42MO5UkWWXTtBiemS7fw5lpOyjuGhSiEFDpUVVL/SX5NGGpzNvVF9 cl/ppGJftMZD6v4eTirym4h8Q+zxgjnfHiCwym2fodYhBNe9ZrtADRSMUjx87gzXcabQ0cflZwY8h V4qmBqWQhOzLQFP728uwQVgeIhLcumS2ehGiQM+1wDZhRgg2S2qpGoFk549qcgsSCQuVYVreZ0aEB mU7btap7borMSw==; Received: from [2001:660:6102:320:e120:2c8f:8909:cdfe] (port=36164 helo=ribbon) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nvgXm-0001kB-HL for 55721-done@debbugs.gnu.org; Mon, 30 May 2022 10:38:55 -0400 From: =?utf-8?Q?Ludovic_Court=C3=A8s?= To: 55721-done@debbugs.gnu.org Subject: Re: bug#55721: Low cache usage in the presence of grafts References: <87y1yj5s1p.fsf@inria.fr> <87pmjv5pto.fsf@gnu.org> Date: Mon, 30 May 2022 16:38:52 +0200 In-Reply-To: <87pmjv5pto.fsf@gnu.org> ("Ludovic =?utf-8?Q?Court=C3=A8s=22'?= =?utf-8?Q?s?= message of "Mon, 30 May 2022 11:31:47 +0200") Message-ID: <877d633x1f.fsf@gnu.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 55721-done X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -1.0 (-) I pushed a variant of the patch I sent as 1ae0e1dc29109cef20dbe9d26eb1c855694716b5. What I get now is: --8<---------------cut here---------------start------------->8--- $ guix gc -D $(guix build polkit --no-grafts) finding garbage collector roots... [0 MiB] deleting '/gnu/store/8vsfk8312m5p461wl4dq5lxjagfbwfhz-polkit-0.121' deleting `/gnu/store/trash' deleting unused links... note: currently hard linking saves 72523.68 MiB $ time GUIX_PROFILING=3D"rpc reference-cache derivation-graft-cache" ./pre-= inst-env guix system vm gnu/system/examples/desktop.tmpl=20 0.2 MB will be downloaded polkit-0.121 198KiB = 1.4MiB/s 00:00 [##################] 100.0% /gnu/store/cvfw1jlf9m60s4yjxhnjjv68rg59giag-run-vm.sh guix system: warning: only 4.7 GiB of free space available on /gnu/store hint: Consider deleting old profile generations and collecting garbage, alo= ng these lines: guix gc --delete-generations=3D1m Reference Cache: fresh caches: 1 lookups: 13997 hits: 13091 (93.5%) cache size: 838 entries Derivation graft cache: fresh caches: 5 lookups: 117280 hits: 103398 (88.2%) cache size: 430 entries Remote procedure call summary: 9286 RPCs built-in-builders ... 1 query-substitutable-path-infos ... 2 build-things ... 2 add-to-store/tree ... 56 valid-path? ... 59 add-to-store ... 373 query-references ... 906 add-text-to-store ... 7887 real 0m45.089s user 1m5.976s sys 0m0.433s --8<---------------cut here---------------end--------------->8--- We=E2=80=99re still getting a few extra =E2=80=98query-references=E2=80=99 = RPCs, but it=E2=80=99s much better. Ludo=E2=80=99. ------------=_1653921602-9254-1 Content-Type: message/rfc822 Content-Disposition: inline Content-Transfer-Encoding: 7bit Received: (at submit) by debbugs.gnu.org; 30 May 2022 08:43:54 +0000 Received: from localhost ([127.0.0.1]:42698 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1nvb0E-0000vf-4i for submit@debbugs.gnu.org; Mon, 30 May 2022 04:43:54 -0400 Received: from lists.gnu.org ([209.51.188.17]:52280) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1nvb09-0000vV-K8 for submit@debbugs.gnu.org; Mon, 30 May 2022 04:43:53 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:48462) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nvb09-0000mo-Ci for bug-guix@gnu.org; Mon, 30 May 2022 04:43:49 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]:33520) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nvb08-0002KY-Ih for bug-guix@gnu.org; Mon, 30 May 2022 04:43:49 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=MIME-Version:Date:Subject:To:From:in-reply-to: references; bh=jEeq2IgyuhlSL6RWD794ydlSYbLNcQTY2rf8zffEoDo=; b=F2MBNz9mlZbOPY BrkDsWVlubQzAMK8tks8DW5FiKf+Wekjuotm1963n4+AF2TFSx1yCn4z0fVRb1rJqP6+I92JsiYCM blp9U4SqVkgYQloHH1u7WlV7l0uxnShxPuXAgpCCAKkGGKShR0SEh0rgyxsSLyVBAkEbAKUJdFhAW vv6+lf0mNBEcu3SmbAWXe0324opi9fJSn56alh+Pi+cj8zEGhLHdcC0XJxsp8HnN/DVEwbs3o5Wj/ uuqUW8mt22gzLFEpc2GC0AQ0V1a7NtIFJ/afRT4YOwpkKya3BEMFZkyiasiRXfDNjlDScDQutxjgm Q9HT6eQV+eSKknw5heFw==; Received: from [193.50.110.143] (port=37288 helo=ribbon) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nvb08-0003Su-1h for bug-guix@gnu.org; Mon, 30 May 2022 04:43:48 -0400 From: =?utf-8?Q?Ludovic_Court=C3=A8s?= To: bug-guix@gnu.org Subject: Low cache usage in the presence of grafts X-URL: http://www.fdn.fr/~lcourtes/ X-Revolutionary-Date: Primidi 11 Prairial an 230 de la =?utf-8?Q?R=C3=A9vo?= =?utf-8?Q?lution=2C?= jour de la Fraise X-PGP-Key-ID: 0x090B11993D9AEBB5 X-PGP-Key: http://www.fdn.fr/~lcourtes/ludovic.asc X-PGP-Fingerprint: 3CE4 6455 8A84 FDC6 9DB4 0CFB 090B 1199 3D9A EBB5 X-OS: x86_64-pc-linux-gnu Date: Mon, 30 May 2022 10:43:46 +0200 Message-ID: <87y1yj5s1p.fsf@inria.fr> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Spam-Score: -1.8 (-) X-Debbugs-Envelope-To: submit X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -2.8 (--) The use of per-session caches in the presence of grafts is low=E2=80=94specifically when =E2=80=9Cbuild handlers=E2=80=9D are invoked. This is illustrated by the example below: =E2=80=A2 the first run invokes the build handler of =E2=80=98map/accumul= ate-builds=E2=80=99 to download polkit (which has a =E2=80=98replacement=E2=80=99) and then= proceeds (the end result was already in store), taking no less than 6m of CPU time; =E2=80=A2 the second run doesn=E2=80=99t have to hop through the build ha= ndler since everything is already in store and its takes 24s of CPU time. --8<---------------cut here---------------start------------->8--- $ guix gc -D $(guix build polkit --no-grafts) finding garbage collector roots... [0 MiB] deleting '/gnu/store/8vsfk8312m5p461wl4dq5lxjagfbwfhz-polkit-0.121' deleting `/gnu/store/trash' deleting unused links... note: currently hard linking saves 72385.53 MiB $ time GUIX_PROFILING=3D"rpc reference-cache derivation-graft-cache" ./pre-= inst-env guix system vm gnu/system/examples/desktop.tmpl=20 0.2 MB will be downloaded polkit-0.121 198KiB = 1.4MiB/s 00:00 [##################] 100.0% /gnu/store/sk1571rnh5jl2ilp0v1k8bqwsdrngwxy-run-vm.sh Reference Cache: fresh caches: 8 lookups: 77581 hits: 52890 (68.2%) cache size: 838 entries Derivation graft cache: fresh caches: 39 lookups: 704635 hits: 627819 (89.1%) cache size: 2946 entries Remote procedure call summary: 33071 RPCs built-in-builders ... 1 query-substitutable-path-infos ... 2 build-things ... 2 add-to-store/tree ... 56 valid-path? ... 59 add-to-store ... 373 add-text-to-store ... 7887 query-references ... 24691 real 5m6.727s user 6m59.438s sys 0m1.633s $ time GUIX_PROFILING=3D"rpc reference-cache derivation-graft-cache" ./pre-= inst-env guix system vm gnu/system/examples/desktop.tmpl=20 /gnu/store/sk1571rnh5jl2ilp0v1k8bqwsdrngwxy-run-vm.sh Reference Cache: fresh caches: 1 lookups: 2988 hits: 2150 (72.0%) cache size: 838 entries Derivation graft cache: fresh caches: 5 lookups: 28323 hits: 25376 (89.6%) cache size: 2946 entries Remote procedure call summary: 9159 RPCs query-substitutable-path-infos ... 1 build-things ... 1 built-in-builders ... 1 valid-path? ... 2 add-to-store/tree ... 56 add-to-store ... 373 query-references ... 838 add-text-to-store ... 7887 real 0m17.304s user 0m24.620s sys 0m0.273s $ git log |head commit acb08304c862d65679086a9f160240bfd598289d Author: Wiktor Zelazny Date: Wed May 18 16:20:30 2022 +0000 gnu: Add python-gpy. =20=20=20=20 * gnu/packages/python-science.scm (python-gpy): New variable. =20=20=20=20 Signed-off-by: Ludovic Court=C3=A8s --8<---------------cut here---------------end--------------->8--- >From the first run we can see that the reference cache (used by =E2=80=98references/cached=E2=80=99, itself called form (guix grafts)) is a= lmost unused since we end up making 24K =E2=80=98query-references=E2=80=99 RPCs for only= 838 entries in that cache, meaning the same work is done ~29 times. My hypothesis is that this is a regression introduced by the switch to =E2=80=9Cfunctional caches=E2=80=9D in =E2=80=98core-updates=E2=80=99 back = in 9e5812ac59b01ff011ec0c5b0f437dfe85d6fcc7. Ludo=E2=80=99. ------------=_1653921602-9254-1--