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 B21361C3D for ; Mon, 23 Oct 2023 16:55:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="rHKCF/BR" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4ADCCC433C8; Mon, 23 Oct 2023 16:55:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1698080146; bh=TSFh5dXbZsg+pUIH3pqYtSVgXyqXN7ExOr851vMR6eA=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=rHKCF/BRnnO9E4gw+RKIBBfXVnYmvhInhF4cRX2+70T6bmkSXrqE93+fPDnoFYa7Q FeYPi801KDfH6WZYyidfc9j/NzFT+YRSZ56ZXGyJTWXmngCFresqEeZHJCoxUo1gwc unkzcYHb+rwta+i9JNmGcGXeNzIT1UdEhbGyH9DxKr/CxPFYzX4FuTQouC814ytvQX DkYptIqhp7DLKqa9anBeoZDlGd8sKu0sK97HkccZHinhXoEDv7GrZU7l0etEgwf0vI 9sBHPb9JXdngcshOftgmaghvYwYAIZKR0q83SAtYWSmHaYYTS0pbQQ4lNb4CCZWtqW MrMyMjRstBP2A== Date: Mon, 23 Oct 2023 09:55:45 -0700 From: Jakub Kicinski To: Michal Soltys Cc: netdev@vger.kernel.org, =?UTF-8?B?UmFmYcWC?= Golcz , Piotr Przybylski Subject: Re: [QUESTION] potential issue - unusual drops on XL710 (40gbit) cards with ksoftirqd hogging one of cpus near 100% Message-ID: <20231023095545.62feadeb@kernel.org> In-Reply-To: References: Precedence: bulk X-Mailing-List: netdev@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, 23 Oct 2023 15:59:09 +0200 Michal Soltys wrote: > - aggressively reclaimed page cache - up to ~200 GB memory is reclaimed > and immediately start filling up again with the data normally served by > those servers I'd start from figuring out why this happens. It may very well be a change / bug in memory management.