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 CB5A94B04AC; Tue, 18 Aug 2026 01:33:57 +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=1787016838; cv=none; b=rTTusmvkufE6aEUwRF0H/WXZPiNF2QihZ+eSxyU/pEsNCuljcZ3ptsdtt0pxP2y0bjkiZLiLODyI5k9G6wprY/Krh8gszn0GypQSrwpyZ8qCVpcWyHCVTDmqcG4TDTb1+NHK/OPCczr1Ud0JmBTcE8jymw4dejSU8AUsHWRWZqU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787016838; c=relaxed/simple; bh=PZMB0cyMnYAzvR5XGM+LOA8qbDQ8XPrm0i4g9i6VMXA=; h=Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=q90xI9A2XDB4A62AZp0/KGcICOoRZmg1FkqG8frC1jt0pzPBN1XzJoQWSHrFmuu25V93ZPp71dR24F/0pSg+xmwaxteU8VyP+qEkYtSJ/YQWAWkHVldwqpSBLUGRiuZu7w+cE+sFe7XponCcvH/pUOzQc6Z1nbMtwWRvHg911is= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=B/uL5skC; 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="B/uL5skC" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4789A1F000E9; Tue, 18 Aug 2026 01:33:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1787016837; bh=HE4o0fBx1vjmEZJ8y/WxeHMVqUkBuJHObDItDEHtR58=; h=Date:From:To:Cc:Subject:In-Reply-To:References; b=B/uL5skCqF26SJ9oSkFev6+fiCHIdBYT12Y0S9rc6ea5Z8EprZC61GkEQLErK6xpW wAmmJLfgcxRyvjiIyUFNCLkhpXGOn+zTSVuuejKIoMVEJZVCMlqT/dckmxz2yiAz7x +5A6v7jutM4YB+/ObFgWrS25ZVwTJof5+3QtOsRvHhoDYOwHnKtwZk+VlL39srCUrD W7ParihMlxWBSRS6chol0bk9/UFaJUKUmP7X5tYWJbzOdn6bjuvHxtUhY8rpPJ7yum 5IWA3UPWrEG/lmUQWux24zkB2JqAsc8vX09SmgIUDPGiHr+NikJ6lnbwjTyDO/R+Q2 /n7206oi3khuA== Date: Mon, 17 Aug 2026 18:33:56 -0700 From: Jakub Kicinski To: Vitaliy Sochnev Cc: davem@davemloft.net, edumazet@google.com, pabeni@redhat.com, horms@kernel.org, weiwan@google.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH net] net: yield the CPU on every exit of the threaded NAPI poll loop Message-ID: <20260817183356.4d90d878@kernel.org> In-Reply-To: <20260814220427.623427-1-sochnev.v.74@gmail.com> References: <20260814220427.623427-1-sochnev.v.74@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-Transfer-Encoding: 7bit On Fri, 14 Aug 2026 23:04:27 +0100 Vitaliy Sochnev wrote: > CPU: 0 UID: 0 PID: 241 Comm: napi/qdma_eth-0 Tainted: G W O 6.18.41 #0 Please try to repro this on Linus's tree and repost if you can. Don't recall the exact details but IIRC the preemption is now more aggressive. -- pw-bot: cr