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 4BB7626ED4E for ; Fri, 21 Nov 2025 19:29:42 +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=1763753383; cv=none; b=SpI/LIRaeQs/SvrZhf7wne1sHbGIOJBRPqFCacAn4yffgbqoCINJ9AoHpK6pIn1sim/qv7CJqtTAr7uucRyrLgZftMIYfu0EXyVey1HNsk6flbRgeYL+gUeB4+kOBmqObXNQJgnQpqsRq4NyTiIzrFjggVsJXTePt+zVTchegXQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763753383; c=relaxed/simple; bh=nMZGzFqfaDDIVNMIRS1+eZ23qE6yMGTma39k0v8PsmA=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=QKkyfj5yXUHjhZujcr35etVV+kO4OTikgDnZVY4MRmGGm7jM+nXP2d7bNWzopmlUMop2mdUMNLjHTaACO5NNG2Zv7b54YAoT0l8c5zX/GFT3D1xhoUaZbOo+TWJXOfpRKRmSs/gMl6OBjnj3tI9xFF7S4XAhe5t+S5URzeHQvsQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=IrhQAwb3; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="IrhQAwb3" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B4B47C4CEF1; Fri, 21 Nov 2025 19:29:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1763753382; bh=nMZGzFqfaDDIVNMIRS1+eZ23qE6yMGTma39k0v8PsmA=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=IrhQAwb3S6JC/IYalgIMdoQKflaYK6k4uYjIggQ0sfRN6401qI3jM8d97Iz7clsMR Xb9lLRJQj4cTpYxAdcWAQ62SHsjxmaTOQDEuGgpWAnUrX6NbfJQfHKKQw0fd6vScta XPh2Bs8sthy+lGj2E4wdZIhZABhNVZazR2C9fsxJlJ+khKvU9P1v/H75aH6v6AYItx 79qyaI5ZpC47jYQyTqmRpF6Y4ihX085+ILvB9CvuLbfb5b5hghwXwtKEIBSnoiENag 2o7AC71a+Efup9J/8ySPHyzdTbffcthSQtUypTvSufflEWjdUaD8eOtDzWA8ZACg4M kHTsn17vcrZVw== Date: Fri, 21 Nov 2025 09:29:41 -1000 From: Tejun Heo To: Lai Jiangshan Cc: linux-kernel@vger.kernel.org, ying chen , Lai Jiangshan Subject: Re: [PATCH V3 7/7] workqueue: Process extra works in rescuer when there are no more to rescue Message-ID: References: <20251121145720.342467-1-jiangshanlai@gmail.com> <20251121145720.342467-8-jiangshanlai@gmail.com> 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=us-ascii Content-Disposition: inline In-Reply-To: <20251121145720.342467-8-jiangshanlai@gmail.com> On Fri, Nov 21, 2025 at 10:57:20PM +0800, Lai Jiangshan wrote: > From: Lai Jiangshan > > Make the rescuer process more work on the last pwq when there are no > more to rescue for the whole workqueue to help the regular workers in > case it is a temporary relief and to reduce relapse. > > Also limit the number of extra works. > > Signed-off-by: Lai Jiangshan Is this based on some empirical case? Can you give a concrete example? Thanks. -- tejun