From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D48A680BE5 for ; Wed, 21 Feb 2024 17:15:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=193.142.43.55 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708535738; cv=none; b=EHUG0ccpc5xrq3Daii2ADHV3+4LnTo9H6Qg0USHvhqt2q/8Hw132yrQaHj5DD2DqMEF/GnfT61cRE9xxJcM8dPgwDTly4+FishCGQ6hwiy12iROBqcgtu710KwgQi0Z6b1dJ88SneOzSmXZiihsDx3P2VOqGVbihocIQRBPTZgs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708535738; c=relaxed/simple; bh=aEJzOLDZkrDjd+yeJI7n3WWrFghfvAICj4gUtvCgTg8=; h=From:To:Cc:Subject:In-Reply-To:References:Date:Message-ID: MIME-Version:Content-Type; b=MNrGClCZatGNIOUwL7M+llqKl/G2Lg3nTDGQdyebxJGutQnpWdvF1sPm+lgKkNtdiuMsQGmUcZTeLuwkoB14j1mdcQ94KJh+ZVpGI2EVYdcFf+K54mpg159uXBR/8LJp+hBKDfOkyBulvoUrsF7d504x2+Zg5wx7CNSFeMEDKb4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de; spf=pass smtp.mailfrom=linutronix.de; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=282fANev; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=9hCIOH+E; arc=none smtp.client-ip=193.142.43.55 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linutronix.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="282fANev"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="9hCIOH+E" From: Thomas Gleixner DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1708535734; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=qEQdXTfrttMbW4EmfhHm/Pngds+cPmrwXTYctSBfY8c=; b=282fANev39NJ42oosNvUau67/CrBCi9X0XUQbjCB6Jl7welrGug1ZjhZZOQXheLi05Km2R zVxmjX4Jq7HCMVocH3iF5UOpuN0bZPI974UfhF9P+lVH1ECUb25uJ2WtxoXPK1KNqTHTpA esF7Oyyl4UuJ+15+4hfJ7Mwk41EJUKV+aV6O/m52/LRdpHfZVr/yZx8a0hvZ+dUsLDthYp uHj5w54b/eXUtP7JMBc8cF/8+nMTi9jNgGjskPhcv4al4U63ygAtIZsJrcM9dagz5gW6JK 4uanVs+j6RXy3TAlNWZAo3bNjTfU4/OH8NIgixZdyuLE6wYUaeUAjYPsVIIFAw== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1708535734; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=qEQdXTfrttMbW4EmfhHm/Pngds+cPmrwXTYctSBfY8c=; b=9hCIOH+EEFu8t0DQ9hV0FqH+x6QEPDg7TDA0IIfbmJ7JVlTE7Kx1vKil1lRgEl8JX+/242 rmQdPouXeHuyplAA== To: Raghavendra K T , Ankur Arora , linux-kernel@vger.kernel.org Cc: peterz@infradead.org, torvalds@linux-foundation.org, paulmck@kernel.org, akpm@linux-foundation.org, luto@kernel.org, bp@alien8.de, dave.hansen@linux.intel.com, hpa@zytor.com, mingo@redhat.com, juri.lelli@redhat.com, vincent.guittot@linaro.org, willy@infradead.org, mgorman@suse.de, jpoimboe@kernel.org, mark.rutland@arm.com, jgross@suse.com, andrew.cooper3@citrix.com, bristot@kernel.org, mathieu.desnoyers@efficios.com, geert@linux-m68k.org, glaubitz@physik.fu-berlin.de, anton.ivanov@cambridgegreys.com, mattst88@gmail.com, krypton@ulrich-teichert.org, rostedt@goodmis.org, David.Laight@ACULAB.COM, richard@nod.at, mjguzik@gmail.com, jon.grimm@amd.com, bharata@amd.com, boris.ostrovsky@oracle.com, konrad.wilk@oracle.com Subject: Re: [PATCH 00/30] PREEMPT_AUTO: support lazy rescheduling In-Reply-To: <15fcf98c-58c5-fa08-2e21-f3b0baf058e6@amd.com> References: <20240213055554.1802415-1-ankur.a.arora@oracle.com> <15fcf98c-58c5-fa08-2e21-f3b0baf058e6@amd.com> Date: Wed, 21 Feb 2024 18:15:34 +0100 Message-ID: <87zfvtg2mh.ffs@tglx> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain On Wed, Feb 21 2024 at 17:53, Raghavendra K T wrote: > Configuration tested. > a) Base kernel (6.7), Which scheduling model is the baseline using? > b) patched with PREEMPT_AUTO voluntary preemption. > c) patched with PREEMPT_DYNAMIC voluntary preemption. > > Workloads I tested and their %gain, > case b case c > NAS +2.7 +1.9 > Hashjoin, +0 +0 > XSBench +1.7 +0 > Graph500, -6 +0 The Graph500 stands out. Needs some analysis. Thanks, tglx