From nobody Tue Jun 27 01:08:10 2023 X-Original-To: threads@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4QqmmW0Grdz4hxW4 for ; Tue, 27 Jun 2023 01:08:11 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4QqmmV5NKpz3BtR for ; Tue, 27 Jun 2023 01:08:10 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1687828090; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=5qRTO3yTHCjscJ4k1qJtOSY+lGB8bjyCHsYuFvMEjVk=; b=UVw6rwE4O1vEzx+jhZr3aBw6wXaRId83EPhs4+Lmg+iLS3XKebs31xgEnXrl2Os0FHhjuH uJ/ngv4NpuPeMTvvoay4ATNzElimtHzmv5lZ3WHhPDpNCF+NGYUFxxEPP3HTtdPpVlXYiN X1tJ37Lhnv8+eKdSIxfG7VWK7/jxqHEggmjpJjw60ECWSS2zXSjGAihigL3cYILZNjnE/e I232sq4vlN04/04/aIIpOxlG0fXO3VWuiXq27Y3k8CIQNJXQVD860w7X4AksDa46ZoaZMM Tdtn/JAPKX0EhRvMEGr+I2teeiZJnOrxYg9BBvuQ/Bns3NeEFyGX+4RlShgE8A== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1687828090; a=rsa-sha256; cv=none; b=TF+Wb8HSn6M56/4lpmdkVFRaA+pNHHfg1LuG1ZQJvyKD2KiV5VDLsjiRu7AiltMsIdc05T W3ynA/ot/Q/00uZqkdqB6k8Q4FebO3JEVLs9GeAjhyEbjWTPWNVdaxVbdYUdpRtuhEKuIG 73eOQomRo5pv/8gQVC9/HqRuy6KeuZQ1dTvyVQaimJVc4Lj+tYXqvr78Qor303dL+YJiXP OYkC5HclEbRn5wG5AwCsaK7OoSD/uduCnoXuYNTukZ6lXj/Iol1Rp4O00Qa8DZ+dA16mks M/jiE0DsR+dfiuGUPTTY3PGUiIC4yw1aVtsAjvYPsX+8miU/4haly8mbQGdliw== Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 4QqmmV4TkrzXS5 for ; Tue, 27 Jun 2023 01:08:10 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 35R18AsO029589 for ; Tue, 27 Jun 2023 01:08:10 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 35R18A46029588 for threads@FreeBSD.org; Tue, 27 Jun 2023 01:08:10 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: threads@FreeBSD.org Subject: [Bug 272238] False sharing with pthread rw and spin locks leads to severe perf degradation Date: Tue, 27 Jun 2023 01:08:10 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: threads X-Bugzilla-Version: CURRENT X-Bugzilla-Keywords: performance X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: grahamperrin@freebsd.org X-Bugzilla-Status: Open X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: threads@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: keywords cc short_desc Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Threading List-Archive: https://lists.freebsd.org/archives/freebsd-threads List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-threads@freebsd.org X-BeenThere: freebsd-threads@freebsd.org MIME-Version: 1.0 X-ThisMailContainsUnwantedMimeParts: N https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D272238 Graham Perrin changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |performance CC| |grahamperrin@freebsd.org Summary|[PATCH] false sharing with |False sharing with pthread |pthread rw and spin locks |rw and spin locks leads to |leads to severe perf |severe perf degradation |degradation | --=20 You are receiving this mail because: You are the assignee for the bug.=