From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 A178524C695; Mon, 10 Feb 2025 21:58:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739224722; cv=none; b=cQDEmJjwW96RP7ZUlH9CbZ6AXqJJm2zdlmZIEOpJZAE7fgUgmBDkrt1s0pfzvuI7F8fUhqJf8MtgJ+DxYVtZZTlDGgRsHoa0G23UlmEg2L2ntixt+yGJJHpTrEsyjaxoIfKKy09zvEemEd1/vird3bEjBcwGvC9QCuueeZz2fwQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739224722; c=relaxed/simple; bh=WPrzjCLFdXP3kYzy8YZCXRDMthhsz7PNkzj9rloRZlQ=; h=Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=L+HXxtjoPst7W9wKZW8vgqZ77klmqt6G9szec+vHoMXBCN4O1YkFk4HVI8nBhlDiCwnb+H3UfnMJnH2y4i8RDoxStTlzPZelWe3TKbTvjW9IEkL8Zo+o134cKVZUUzPphI2n1m9kTiLjCPJUNwCRRqVxTOBQqvwpkKOKf/lLbJQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6409CC4CED1; Mon, 10 Feb 2025 21:58:37 +0000 (UTC) Date: Mon, 10 Feb 2025 16:58:40 -0500 From: Steven Rostedt To: David Laight Cc: Joel Fernandes , Prakash Sangappa , Peter Zijlstra , linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, Thomas Gleixner , Ankur Arora , Linus Torvalds , linux-mm@kvack.org, x86@kernel.org, Andrew Morton , luto@kernel.org, bp@alien8.de, dave.hansen@linux.intel.com, hpa@zytor.com, juri.lelli@redhat.com, vincent.guittot@linaro.org, willy@infradead.org, mgorman@suse.de, jon.grimm@amd.com, bharata@amd.com, raghavendra.kt@amd.com, Boris Ostrovsky , Konrad Wilk , jgross@suse.com, Andrew.Cooper3@citrix.com, Vineeth Pillai , Suleiman Souhlal , Ingo Molnar , Mathieu Desnoyers , Clark Williams , bigeasy@linutronix.de, daniel.wagner@suse.com, Joseph Salisbury , broonie@gmail.com Subject: Re: [RFC][PATCH 1/2] sched: Extended scheduler time slice Message-ID: <20250210165840.7dd1dced@gandalf.local.home> In-Reply-To: <20250210215116.4cbf240a@pumpkin> References: <9DA1FAE6-A008-4785-BDF9-541457E29807@joelfernandes.org> <20250204220418.35949317@gandalf.local.home> <20250205081635.397eacb0@gandalf.local.home> <20250206083039.0916ad24@gandalf.local.home> <20250210172059.07cda916@pumpkin> <20250210122700.3b963ff0@gandalf.local.home> <20250210144432.14c50995@gandalf.local.home> <20250210215116.4cbf240a@pumpkin> X-Mailer: Claws Mail 3.20.0git84 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Precedence: bulk X-Mailing-List: linux-trace-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Mon, 10 Feb 2025 21:51:16 +0000 David Laight wrote: > And then you lose lots of receive ethernet packets unless you change > all the thread priorities. > (I don't recall anything that makes them run at a low FIFO prioriry.) Interrupt threads by default run at FIFO 50. The softirqs will run with the threads that raise them so at the same priority. See "sched_set_fifo()". -- Steve