From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) (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 0C3B737702A for ; Thu, 4 Jun 2026 18:41:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=90.155.50.34 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780598493; cv=none; b=rr64y0WFnMMwVx2j6X/vyLSIaLTVNdiu9nUa/qkpcaWGIULynqbdxSQPK+hvzQzQTLevwPQsffSpWeUt55OBH1y9+X/P41lr/3OjXqA9/olGx/D2nIOJ4GlNhi7jtt4nSjix3a+vWeozhOvpQzDQaevD67D35wXRqbePgx2beJk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780598493; c=relaxed/simple; bh=1RtevA5ea2AijQ+TGLLxPXDh682ygitPnBvv6nTDDu8=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=dI34nS2m7N1Sv8i3P7tGuKUSlhi/c7L/r1+axKLBta+oJgBdjE2h1ZwmiV9GB7h1APpGzXbyY+V9kJaz0YcANV37q8g5OuB6qIKddI+OrS3Zk9mNh82rtglI3by8Fg9PSV09CFnnOdlCfnd9VdA4hNVDSjrYuqLNbO7WUpS1VIg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=infradead.org; spf=pass smtp.mailfrom=infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=hn6BXbT3; arc=none smtp.client-ip=90.155.50.34 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=infradead.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="hn6BXbT3" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Transfer-Encoding: Content-Type:MIME-Version:References:Message-ID:Subject:Cc:To:From:Date: Sender:Reply-To:Content-ID:Content-Description; bh=vbzt065FTLA4vQSp6dl0zlTCe2kDbXXt2BG+uFPyVag=; b=hn6BXbT3ZWxrBD7oBGsNkvPias Rbwx2N4Cwh/PsaZAdRPMyi00QWVmV28DY+NvtUYopQgmz4uu3KTQE9tZKXQEPX9WGYtMeHHfgy1m8 T8OZjk5o1dwePZCFNVIbgL2mg1e36Cz2T7R3o/+vBZrMnnLKk3SdMeY68VkHPouU3rkFJcoRASSE9 pN7LVcnofYff6wK+BM/3wVaOx+UC00GJuBwpKCjVFpfnIyTQ/oEnEGZkuSM2yWH9f+I7K338ypBt4 61c6sNSGdcpkkpLff1T37gUxAJvLjDdetQXXtOyEXz6HkdGbOWaRBZhGDyx3Ut1qavGswlCIzUOS1 g8ZCs0Kw==; Received: from 77-249-17-252.cable.dynamic.v4.ziggo.nl ([77.249.17.252] helo=noisy.programming.kicks-ass.net) by casper.infradead.org with esmtpsa (Exim 4.99.1 #2 (Red Hat Linux)) id 1wVD02-00000006WRl-1gmU; Thu, 04 Jun 2026 18:41:03 +0000 Received: by noisy.programming.kicks-ass.net (Postfix, from userid 1000) id 8D8353001FD; Thu, 04 Jun 2026 20:41:01 +0200 (CEST) Date: Thu, 4 Jun 2026 20:41:01 +0200 From: Peter Zijlstra To: John Stultz Cc: K Prateek Nayak , Joel Fernandes , Qais Yousef , Ingo Molnar , Juri Lelli , Vincent Guittot , Dietmar Eggemann , Valentin Schneider , Steven Rostedt , Ben Segall , Zimuzo Ezeozue , Will Deacon , Waiman Long , Boqun Feng , "Paul E. McKenney" , Metin Kaya , Xuewen Yan , Thomas Gleixner , Daniel Lezcano , Suleiman Souhlal , kuyo chang , hupu , linux-kernel@vger.kernel.org, Mike Galbraith Subject: Re: [PATCH 5/6] sched/proxy: Remove PROXY_WAKING Message-ID: <20260604184101.GG3126523@noisy.programming.kicks-ass.net> References: <20260526111609.433880331@infradead.org> <20260526113322.596522894@infradead.org> <20260601105425.GQ3493090@noisy.programming.kicks-ass.net> <84ef4c1b-3e84-486b-a127-e51d0d6547b0@amd.com> <20260602100206.GP3102624@noisy.programming.kicks-ass.net> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: On Thu, Jun 04, 2026 at 11:29:06AM -0700, John Stultz wrote: > On Tue, Jun 2, 2026 at 3:02 AM Peter Zijlstra wrote: > > > > On Tue, Jun 02, 2026 at 10:52:10AM +0530, K Prateek Nayak wrote: > > > > > Could you also try merging tip:sched/urgent into this branch and > > > rerunning. > > > > I'll merge that into sched/core so we don't keep hitting this. Been > > there done that etc. :( > > Just an update: So I re-ran with K Prateek's suggestion for a night > with no trouble, and then after I saw sched/core was updated I started > over with that as of 130fc7bdfadb ("sched/fair: Unify cfs_rq > throttling via account_cfs_rq_runtime()"), and its been running the > same stress testing for almost 40 hours without any apparent issues. > > So yeah, I'm pretty sure the b6eee96843e8 ("sched/fair: Fix overflow > in vruntime_eligible()") fix resolved what I was hitting. Excellent!, I'll go push queue:sched/core into -tip momentarily.