From unknown Sat Jun 14 05:23:47 2025 X-Loop: help-debbugs@gnu.org Subject: bug#67502: [Cuirass] =?UTF-8?Q?=E2=80=98cuirass_?= =?UTF-8?Q?remote-worker=E2=80=99?= gets the CPU count wrong on the OverDrive Resent-From: Ludovic =?UTF-8?Q?Court=C3=A8s?= Original-Sender: "Debbugs-submit" Resent-CC: bug-guix@gnu.org Resent-Date: Tue, 28 Nov 2023 09:11:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: report 67502 X-GNU-PR-Package: guix X-GNU-PR-Keywords: To: 67502@debbugs.gnu.org X-Debbugs-Original-To: bug-guix@gnu.org Received: via spool by submit@debbugs.gnu.org id=B.170116260329076 (code B ref -1); Tue, 28 Nov 2023 09:11:02 +0000 Received: (at submit) by debbugs.gnu.org; 28 Nov 2023 09:10:03 +0000 Received: from localhost ([127.0.0.1]:45398 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1r7u6U-0007Yt-GI for submit@debbugs.gnu.org; Tue, 28 Nov 2023 04:10:02 -0500 Received: from lists.gnu.org ([2001:470:142::17]:44416) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1r7u6S-0007YK-21 for submit@debbugs.gnu.org; Tue, 28 Nov 2023 04:10:00 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1r7u6F-0004La-Pm for bug-guix@gnu.org; Tue, 28 Nov 2023 04:09:47 -0500 Received: from mail3-relais-sop.national.inria.fr ([192.134.164.104]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1r7u6D-0005oM-GM for bug-guix@gnu.org; Tue, 28 Nov 2023 04:09:47 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=inria.fr; s=dc; h=from:to:subject:date:message-id:mime-version: content-transfer-encoding; bh=PQk1a7G9jGmnOoX73RFcr7aSSMicDJcFsuhyg8hfr8A=; b=vsNGxLcFFwtSDpYx7w/sjwdxVk2Pe3pfPLQW4nDqX0TSJl/7QbQxVAhc ftk7xZgVcGF9zW3J/t50/Ja3D8YiOTtfuFi+tYaHMVmAc0VD4iwyEyep6 wvzCPAWSaDC8oswPADxXQKDp8OzklWv5QTvARvuMmtz4vMAQ7ZgIXktZH I=; Authentication-Results: mail3-relais-sop.national.inria.fr; dkim=none (message not signed) header.i=none; spf=SoftFail smtp.mailfrom=ludovic.courtes@inria.fr; dmarc=fail (p=none dis=none) d=inria.fr X-IronPort-AV: E=Sophos;i="6.04,233,1695679200"; d="scan'208";a="72783190" Received: from unknown (HELO ribbon) ([193.50.110.222]) by mail3-relais-sop.national.inria.fr with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 Nov 2023 10:09:43 +0100 From: Ludovic =?UTF-8?Q?Court=C3=A8s?= X-URL: http://www.fdn.fr/~lcourtes/ X-Revolutionary-Date: Octidi 8 Frimaire an 232 de la =?UTF-8?Q?R=C3=A9volution,?= jour du Miel 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: Tue, 28 Nov 2023 10:09:42 +0100 Message-ID: <87zfyyutux.fsf@inria.fr> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Received-SPF: pass client-ip=192.134.164.104; envelope-from=ludovic.courtes@inria.fr; helo=mail3-relais-sop.national.inria.fr 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, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, 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-Spam-Score: 1.0 (+) 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: -0.0 (/) On the OverDrive (AArch64), =E2=80=98cuirass remote-worker=E2=80=99 (1.2.0-= 1.bdc1f9f) says: starting 2 workers (parallelism: 1 cores) for server at 10.0.0.1 Instead it should use two cores for each worker: --8<---------------cut here---------------start------------->8--- ludo@dover ~$ guile -c '(use-modules (ice-9 threads)) (pk (current-processo= r-count))' ;;; (4) ludo@dover ~$ guile -c '(use-modules (ice-9 threads)) (pk (ceiling-quotient= (current-processor-count) 2))' ;;; (2) ludo@dover ~$ nproc 4 --8<---------------cut here---------------end--------------->8--- Since =E2=80=98current-processor-count=E2=80=99 is implemented indirectly i= n terms of =E2=80=98sched_getaffinity=E2=80=99, this suggests that the process starts = with a bogus affinity mask. (Time passes=E2=80=A6) That=E2=80=99s indeed the case: --8<---------------cut here---------------start------------->8--- ludo@dover ~$ sudo herd status cuirass-remote-worker Status of cuirass-remote-worker: It is started. Running value is 21279. It is enabled. Provides (cuirass-remote-worker). Requires (avahi-daemon guix-daemon networking). Will be respawned. ludo@dover ~$ guile -c '(pk (getaffinity 21279))' ;;; (#*10000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 00000000000000000000000000000000000000000000000000000000) --8<---------------cut here---------------end--------------->8--- Compare to the affinity mask on x86_64-linux-gnu: --8<---------------cut here---------------start------------->8--- ludo@guix-hpc3 ~$ sudo guile -c '(pk (getaffinity 1817))' ;;; (#*11111111111111111111111111111111000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 00000000000000000000000000000000000000000000000000000000) --8<---------------cut here---------------end--------------->8--- Interesting that the initial affinity mask differs on aarch64-linux-gnu compared to x86_64-linux-gnu. Ludo=E2=80=99. From unknown Sat Jun 14 05:23:47 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#67502: closed (Re: bug#67502: [Cuirass] =?UTF-8?Q?=E2=80=98cuirass_?= =?UTF-8?Q?remote-worker=E2=80=99?= gets the CPU count wrong on the OverDrive) Message-ID: References: <87cyvtsxql.fsf@gnu.org> <87zfyyutux.fsf@inria.fr> X-Gnu-PR-Message: they-closed 67502 X-Gnu-PR-Package: guix Reply-To: 67502@debbugs.gnu.org Date: Tue, 28 Nov 2023 15:30:02 +0000 Content-Type: multipart/mixed; boundary="----------=_1701185402-4702-1" This is a multi-part message in MIME format... ------------=_1701185402-4702-1 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Your bug report #67502: [Cuirass] =E2=80=98cuirass remote-worker=E2=80=99 gets the CPU coun= t wrong on the OverDrive 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 67502@debbugs.gnu.org. --=20 67502: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D67502 GNU Bug Tracking System Contact help-debbugs@gnu.org with problems ------------=_1701185402-4702-1 Content-Type: message/rfc822 Content-Disposition: inline Content-Transfer-Encoding: 7bit Received: (at 67502-done) by debbugs.gnu.org; 28 Nov 2023 15:29:07 +0000 Received: from localhost ([127.0.0.1]:47433 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1r801L-0001CO-0e for submit@debbugs.gnu.org; Tue, 28 Nov 2023 10:29:07 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:37274) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1r801I-0001Bt-V4 for 67502-done@debbugs.gnu.org; Tue, 28 Nov 2023 10:29:06 -0500 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1r8016-00031i-Ja for 67502-done@debbugs.gnu.org; Tue, 28 Nov 2023 10:28:52 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=MIME-Version:Date:References:In-Reply-To:Subject:To: From; bh=c5JwcmewA5XbwHXOzqkl9rAqqbWe9cqzr7Gk7l/iRb8=; b=jF2ZOTM5QS5lGDRlhV9k wWA2HUsgGZ8dqVU/AvmTmC39/2s0rO8fHey9I30/yh+wZyaPWMEaA/uO4I07c4si+cCrEJG3ao2Hh CY6MLWCD2ncnfUBdCERTQ5lK2t7EOtKx/yczMaZ2/blACUN4paZ9/ge9HLoruZGDF79raTTsu3utd n0vnWFS/2Xl+L0uNPUf/hIKTYKS8r0tlnXkWKEIdBfSQvawaBHVCAi706HDU37aVubk5hNqObQVeD CjQJa0ODBALiYBGivEm433N8S5br/2mPo+Hiu9gU1jwAmF44O36OQGgiDGb8A6oBL7YMqpyRGOVt5 AVCzZjJfEwWNJg==; From: =?utf-8?Q?Ludovic_Court=C3=A8s?= To: 67502-done@debbugs.gnu.org Subject: Re: bug#67502: [Cuirass] =?utf-8?Q?=E2=80=98cuirass_remote-worker?= =?utf-8?Q?=E2=80=99?= gets the CPU count wrong on the OverDrive In-Reply-To: <87zfyyutux.fsf@inria.fr> ("Ludovic =?utf-8?Q?Court=C3=A8s=22?= =?utf-8?Q?'s?= message of "Tue, 28 Nov 2023 10:09:42 +0100") References: <87zfyyutux.fsf@inria.fr> Date: Tue, 28 Nov 2023 16:28:50 +0100 Message-ID: <87cyvtsxql.fsf@gnu.org> User-Agent: Gnus/5.13 (Gnus v5.13) 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: 67502-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: -3.3 (---) Ludovic Court=C3=A8s skribis: > ludo@dover ~$ sudo herd status cuirass-remote-worker > Status of cuirass-remote-worker: > It is started. > Running value is 21279. > It is enabled. > Provides (cuirass-remote-worker). > Requires (avahi-daemon guix-daemon networking). > Will be respawned. > ludo@dover ~$ guile -c '(pk (getaffinity 21279))' > > ;;; (#*100000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 0000000000000000000000000000000000000000000000000000000000) This was due to =E2=80=98run-fibers=E2=80=99 binding one thread per CPU cor= e. Thus, calling =E2=80=98getaffinity=E2=80=99 from within =E2=80=98run-fibers=E2=80= =99 shows only one CPU and likewise =E2=80=98current-processor-count=E2=80=99 returns 1. Fixed in Cuirass commit 87a6d6ea7ae79fdf487bbcfd44bb3dce2d7c6e82. Ludo=E2=80=99. ------------=_1701185402-4702-1 Content-Type: message/rfc822 Content-Disposition: inline Content-Transfer-Encoding: 7bit Received: (at submit) by debbugs.gnu.org; 28 Nov 2023 09:10:03 +0000 Received: from localhost ([127.0.0.1]:45398 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1r7u6U-0007Yt-GI for submit@debbugs.gnu.org; Tue, 28 Nov 2023 04:10:02 -0500 Received: from lists.gnu.org ([2001:470:142::17]:44416) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1r7u6S-0007YK-21 for submit@debbugs.gnu.org; Tue, 28 Nov 2023 04:10:00 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1r7u6F-0004La-Pm for bug-guix@gnu.org; Tue, 28 Nov 2023 04:09:47 -0500 Received: from mail3-relais-sop.national.inria.fr ([192.134.164.104]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1r7u6D-0005oM-GM for bug-guix@gnu.org; Tue, 28 Nov 2023 04:09:47 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=inria.fr; s=dc; h=from:to:subject:date:message-id:mime-version: content-transfer-encoding; bh=PQk1a7G9jGmnOoX73RFcr7aSSMicDJcFsuhyg8hfr8A=; b=vsNGxLcFFwtSDpYx7w/sjwdxVk2Pe3pfPLQW4nDqX0TSJl/7QbQxVAhc ftk7xZgVcGF9zW3J/t50/Ja3D8YiOTtfuFi+tYaHMVmAc0VD4iwyEyep6 wvzCPAWSaDC8oswPADxXQKDp8OzklWv5QTvARvuMmtz4vMAQ7ZgIXktZH I=; Authentication-Results: mail3-relais-sop.national.inria.fr; dkim=none (message not signed) header.i=none; spf=SoftFail smtp.mailfrom=ludovic.courtes@inria.fr; dmarc=fail (p=none dis=none) d=inria.fr X-IronPort-AV: E=Sophos;i="6.04,233,1695679200"; d="scan'208";a="72783190" Received: from unknown (HELO ribbon) ([193.50.110.222]) by mail3-relais-sop.national.inria.fr with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 Nov 2023 10:09:43 +0100 From: =?utf-8?Q?Ludovic_Court=C3=A8s?= To: bug-guix@gnu.org Subject: [Cuirass] =?utf-8?Q?=E2=80=98cuirass_remote-worker=E2=80=99?= gets the CPU count wrong on the OverDrive X-URL: http://www.fdn.fr/~lcourtes/ X-Revolutionary-Date: Octidi 8 Frimaire an 232 de la =?utf-8?Q?R=C3=A9volu?= =?utf-8?Q?tion=2C?= jour du Miel 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: Tue, 28 Nov 2023 10:09:42 +0100 Message-ID: <87zfyyutux.fsf@inria.fr> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Received-SPF: pass client-ip=192.134.164.104; envelope-from=ludovic.courtes@inria.fr; helo=mail3-relais-sop.national.inria.fr 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, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, 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-Spam-Score: 1.0 (+) 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: -0.0 (/) On the OverDrive (AArch64), =E2=80=98cuirass remote-worker=E2=80=99 (1.2.0-= 1.bdc1f9f) says: starting 2 workers (parallelism: 1 cores) for server at 10.0.0.1 Instead it should use two cores for each worker: --8<---------------cut here---------------start------------->8--- ludo@dover ~$ guile -c '(use-modules (ice-9 threads)) (pk (current-processo= r-count))' ;;; (4) ludo@dover ~$ guile -c '(use-modules (ice-9 threads)) (pk (ceiling-quotient= (current-processor-count) 2))' ;;; (2) ludo@dover ~$ nproc 4 --8<---------------cut here---------------end--------------->8--- Since =E2=80=98current-processor-count=E2=80=99 is implemented indirectly i= n terms of =E2=80=98sched_getaffinity=E2=80=99, this suggests that the process starts = with a bogus affinity mask. (Time passes=E2=80=A6) That=E2=80=99s indeed the case: --8<---------------cut here---------------start------------->8--- ludo@dover ~$ sudo herd status cuirass-remote-worker Status of cuirass-remote-worker: It is started. Running value is 21279. It is enabled. Provides (cuirass-remote-worker). Requires (avahi-daemon guix-daemon networking). Will be respawned. ludo@dover ~$ guile -c '(pk (getaffinity 21279))' ;;; (#*10000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 00000000000000000000000000000000000000000000000000000000) --8<---------------cut here---------------end--------------->8--- Compare to the affinity mask on x86_64-linux-gnu: --8<---------------cut here---------------start------------->8--- ludo@guix-hpc3 ~$ sudo guile -c '(pk (getaffinity 1817))' ;;; (#*11111111111111111111111111111111000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 00000000000000000000000000000000000000000000000000000000) --8<---------------cut here---------------end--------------->8--- Interesting that the initial affinity mask differs on aarch64-linux-gnu compared to x86_64-linux-gnu. Ludo=E2=80=99. ------------=_1701185402-4702-1--