From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 9EF6E3D952D; Mon, 10 Aug 2026 12:45:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786365925; cv=none; b=IfCPKEbEKQlUtPH4OALCxtLvhAcmcQJaKdHskCdPXfQ4CI/6h6tDJvxR+7g11NxLUpsKoQDws2LKtt9BSy9MOmd8l67RvO8hAZ8KZqbJvky5aC4oJfdARCP9f/pHn74V3RC8EcNe73qnatVDg0OzK+K82WDVqsYzCxxwa2GuUss= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786365925; c=relaxed/simple; bh=4K2C7DhbJOJxmf8+UuSZg6NFnK7PTCnLVHe4kYu+6Zw=; h=Mime-Version:Content-Type:Date:Message-Id:Subject:Cc:To:From: References:In-Reply-To; b=mzdyPyqwCgzALo1QqikB0JirCX93ZR/2aTZWLfUxBHl1AKff8yntDXEZOo3iR1EMnIBXAchygMIhSA3F3ZhH1WT+sVnd3117Ss/xWhpRh/cOhP/a0V8Z3yg8oxKxPvKTvWnHNU9Ts1m56pVsd+IV1OkzETgGv/UTKO3kHcb0aXQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=TuPq1NID; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="TuPq1NID" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 556261F00A3D; Mon, 10 Aug 2026 12:45:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1786365924; bh=4K2C7DhbJOJxmf8+UuSZg6NFnK7PTCnLVHe4kYu+6Zw=; h=Date:Subject:Cc:To:From:References:In-Reply-To; b=TuPq1NIDM0pLQYZyikjmMRc68yoxpEgRFj7gmpdP8TIYNF7LpdYSIEySNU6fPL0G5 4dSoeNoQLuM7Z6zepMectNNYWu1E2/l4wAuZZa5CmSrlSAu+kGVRK52Iz5NlTDXQ3H pKRTJcpQ/5iZ72WVUHJCl++lTfo73s7ZchZV4iQ4rpg72kMTYMdZi6U2QH7Vcii3zV /tdDZD7X1AiFT8jImaqUN41ahlgBQYeMgt2OnRYHFrgdc5fC8KHWauHZQB+lcUMRip WsifvbWv1j45wXOb/Hz0QNA9IRWmQPR3Cv2F8QhdxB9oRv0ifRE8q9vh64g0j4GOfc uvF1UgUH1HfGg== Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 Date: Mon, 10 Aug 2026 14:45:20 +0200 Message-Id: Subject: Re: [REGRESSION] drm/sched: FAIR policy causes serious performance degradation at max GPU load on 9070XT Cc: , , "matthew.brost@intel.com" , "ckoenig.leichtzumerken@gmail.com" , "dri-devel@lists.freedesktop.org" , "regressions@lists.linux.dev" , "amd-gfx@lists.freedesktop.org" , "linux-kernel@vger.kernel.org" , "Tvrtko Ursulin" To: "Philipp Stanner" From: "Danilo Krummrich" References: In-Reply-To: On Mon Aug 10, 2026 at 10:28 AM CEST, Philipp Stanner wrote: >> Reverted Commits: >>=20 >> d09339388b77 drm/sched: Remove drm_sched_init_args->num_rqs >> 2833a0512b4c drm/sched: Remove drm_sched_init_args->num_rqs usage >> 16e7698bc04d drm/sched: Embed run queue singleton into the scheduler >> 77a6809f1dc3 drm/sched: Remove FIFO and RR and simplify to a single run = queue >> 45c211ddf92a drm/sched: Switch default policy to fair >> 2462a0ce23b0 drm/amdgpu: Remove drm_sched_init_args->num_rqs usage [...] > That might be the wisest thing to do; but let's hear if Tvrtko has an ide= a for > a hotfix first. -rc7 was released yesterday; even with a working hotfix today it'd be trick= y to ensure the hotfix does not regress other drivers or workloads with 7.2 bein= g just a few days ahead. I suggest to not wait and get the reverts ready. Thanks, Danilo