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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B0C0DC6FA82 for ; Tue, 13 Sep 2022 11:21:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231862AbiIMLVb (ORCPT ); Tue, 13 Sep 2022 07:21:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40078 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231459AbiIMLV2 (ORCPT ); Tue, 13 Sep 2022 07:21:28 -0400 Received: from desiato.infradead.org (desiato.infradead.org [IPv6:2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C6C795AA38 for ; Tue, 13 Sep 2022 04:21:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=hC4IkMNlybq5fhEmW9iih8zIZ8yJAEnsXBHk+lgvBTk=; b=Aczea784Z7ZPCHLuwwW/2lxVyD XJQly3g7riWBv6NmA+0FUW2PUycbxb5NiV67AqHR06iul6rCJs+eZM1AUQDQdJ9crqh4c7lCNJwHd hPaDwPLsLYxFt647V2+MxPOUsYE6kJ3SAfdDuf+nDlmIV8WlXc2A5HMOmow4RyF6OncyC+rblKLv3 O2iqdpUu73MhtsYNShDYmrEQ6Jcxedaed/IIs9FaMBae6Qg5QdRefdSPRPOZqu2NqM28ofxynSd/x 0lW3Y5b5zJ5Mc4Admxzfg6Zfh4JFECoe0znQBFWZ0hIUHbEcyV3WnoukS5JS5rgdrqcm0u2/COIlP A5qotK1A==; Received: from j130084.upc-j.chello.nl ([24.132.130.84] helo=noisy.programming.kicks-ass.net) by desiato.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1oY3yE-00C3ma-EK; Tue, 13 Sep 2022 11:20:53 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (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 noisy.programming.kicks-ass.net (Postfix) with ESMTPS id 6B7C130030F; Tue, 13 Sep 2022 13:20:48 +0200 (CEST) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id 4A5DA20298A51; Tue, 13 Sep 2022 13:20:48 +0200 (CEST) Date: Tue, 13 Sep 2022 13:20:48 +0200 From: Peter Zijlstra To: Manikandan Jagatheesan Cc: Borislav Petkov , "jpoimboe@kernel.org" , "tglx@linutronix.de" , "mingo@redhat.com" , "dave.hansen@linux.intel.com" , "x86@kernel.org" , "hpa@zytor.com" , "linux-kernel@vger.kernel.org" , "srivatsa@csail.mit.edu" , Peter Jonasson , Yiu Cho Lau , Rajender M , Abdul Anshad Azeez , Kodeswaran Kumarasamy , Rahul Gopakumar Subject: Re: Performance Regression in Linux Kernel 5.19 Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Sep 13, 2022 at 08:40:49AM +0000, Manikandan Jagatheesan wrote: > Are there are any ongoing activities to optimize the performance? https://lkml.kernel.org/r/20220902130625.217071627@infradead.org I should post a new version soonish: git://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git call-depth-tracking boot with: spectre_v2=retpoline retbleed=stuff