From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 30A72C433C1 for ; Thu, 25 Mar 2021 20:19:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id ECA9161A3D for ; Thu, 25 Mar 2021 20:19:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230241AbhCYUSq (ORCPT ); Thu, 25 Mar 2021 16:18:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42528 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230396AbhCYUSl (ORCPT ); Thu, 25 Mar 2021 16:18:41 -0400 Received: from mail-ej1-x62e.google.com (mail-ej1-x62e.google.com [IPv6:2a00:1450:4864:20::62e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 16D19C06174A for ; Thu, 25 Mar 2021 13:18:41 -0700 (PDT) Received: by mail-ej1-x62e.google.com with SMTP id jy13so5035786ejc.2 for ; Thu, 25 Mar 2021 13:18:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=eaHBsmSjc0LhjW14QjxAma7W51tMV92cZlIPC32xDFg=; b=hrJWia4GuHJ5koVjUOi+wx1d6MVXEPPWfNJw7zfI9XOmZN97fPIQCONGOUcKfMgQIk 96yO7m+naNnLiPgO9kmRzkf7C8ZSy4nuyqN8KGyWxymHelSz+xBZ8Ul35sJBspqfbvhL WUNyH8KLyJJICOKBYcJ1KDim9NJozQ4gv7fUQ52g/WI+mnoOZvtUml/G6ZYZsutT0dHd MHLaJgwGaUAwJdTUd1BfqviNFsiB0OrwiHlLs+wEuic7A4WR5xqVncKECd7cs0/+cIg3 nA/6xtozKOTJ3WGOZINVqgUk/U3tAsupEF10Uz1FHIjl2jKdqsz3Kr1PHpWYz8lQrFDd w0ow== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=eaHBsmSjc0LhjW14QjxAma7W51tMV92cZlIPC32xDFg=; b=pKxMfbizCa4St5FKRg4CgD9bYnxTcnUS+qF29PQ+OAjF1d/tnm0P5NwYkk8xizpTJ/ vGJ6eAenA4SYZEaoArwJNVUOc0Wjhoia8bWwH+ediCFUhKaL4f8obLN2Ks6LxPT/JTt7 azOb8bBiGnrK1o0ct614yyvFFiKA3XUiGUpSEwYVIOYlcK3ux1aTS+1vsRqR/Q/yhmls rHP0mQimbxKzF2h20lcsU7GLfcKhHHoEGtfjPTMsRYfqi0AcbHR27MNUe2XJXj7FgpYX 8EZKT9AJw/T03nQcz/TrDxjBeUCx0IwpfrcIgRXIAkHAgz7hbuc9Cnd8txzBAkMs4WVr 22fQ== X-Gm-Message-State: AOAM530MLS4r23uqD7UApROAL5FqwZpJ0pBUxvG+gpgluV0YyJbf7IdN 0zfG8fdh+LIKQ65SUrmLzxeSJBG8Fe71+Q== X-Google-Smtp-Source: ABdhPJzjOGtDggA4boSwr1FgAe5pS61sNwq/GxinPJo4yTo23iZseJaUlnBiJpxlIUW3rSgQde/r3w== X-Received: by 2002:a17:906:4cd9:: with SMTP id q25mr11390938ejt.187.1616703519772; Thu, 25 Mar 2021 13:18:39 -0700 (PDT) Received: from localhost.localdomain (dynamic-2a01-0c23-6c47-0000-17ef-d1e1-78a0-d19c.c23.pool.telefonica.de. [2a01:c23:6c47:0:17ef:d1e1:78a0:d19c]) by smtp.gmail.com with ESMTPSA id a22sm3135406edu.14.2021.03.25.13.18.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 25 Mar 2021 13:18:39 -0700 (PDT) From: Jonathan Schwender To: jkacur@redhat.com, williams@redhat.com Cc: linux-rt-users@vger.kernel.org Subject: [PATCH v3 0/2] rt-tests: cyclictest: Add option to specify main pid affinity Date: Thu, 25 Mar 2021 21:18:35 +0100 Message-Id: X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-rt-users@vger.kernel.org Hi John, Changes in v3: Rebased onto latest commit 95066b1a1a0a ("cyclicdeadline.c: Fix printf format specifier") in unstable/devel/latest. This patch adds the option --mainaffinity to specify the affinity of the main pid. This is mainly useful if you want to bind the main thread to a different (e.g. housekeeping ) CPU than the measurement threads. Some numbers on potential latency benefits are linked in the v1 thread at https://lore.kernel.org/linux-rt-users/dd40b81d-7099-7740-c2ad-64b49e582234@gmail.com/ Regards Jonathan Jonathan Schwender (2): cyclictest: Move main pid setaffinity handling into a function cyclictest: Add --mainaffinity=[CPUSET] option. src/cyclictest/cyclictest.c | 28 +++++++++++++++++++--------- src/include/rt-numa.h | 2 ++ src/lib/rt-numa.c | 11 +++++++++++ 3 files changed, 32 insertions(+), 9 deletions(-) -- 2.30.2