From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from fout-a5-smtp.messagingengine.com (fout-a5-smtp.messagingengine.com [103.168.172.148]) (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 552CB492531; Wed, 19 Aug 2026 17:21:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=103.168.172.148 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787160103; cv=none; b=R+bIFFvrPkUW2tEmtpug996t3/MBtTFEy0yqGn+3FIv0NmwxWT0Yh1j4fxfMGcKbJcbW2WJ9xILqwvEQmVtP2ruQzWNv5DofJKGC6gIn5FxnWIX78JOqPaN/td+qYx9+L6fD3uqB29W61A5C2SLNGsQSGboVR5lS6XvsGvBL14E= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787160103; c=relaxed/simple; bh=reyOikJeIgz8Wh2yKLyAJLiVo42x0TSWEUdhf5zTah8=; h=MIME-Version:Date:From:To:Cc:Message-Id:In-Reply-To:References: Subject:Content-Type; b=OWA3kto9sGBJCaxpw9FVjRm4ROMsikaaYvQIWRuSmRX6vSlSFBuDEN0T2fJxscJ6+Y2J2TdDWw+s+zJYRJzHXW9pN7DnYmq85K3WgQFNkikPCk135RfktQcdbtO6GylTrBnKWZTVpJqaVt9/ZDEmelOmBhjtbd/lbDa6/+vr27c= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=fastmail.im; spf=pass smtp.mailfrom=fastmail.im; dkim=pass (2048-bit key) header.d=fastmail.im header.i=@fastmail.im header.b=ZTbe2faa; dkim=pass (2048-bit key) header.d=messagingengine.com header.i=@messagingengine.com header.b=MmG+8dvi; arc=none smtp.client-ip=103.168.172.148 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=fastmail.im Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=fastmail.im Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=fastmail.im header.i=@fastmail.im header.b="ZTbe2faa"; dkim=pass (2048-bit key) header.d=messagingengine.com header.i=@messagingengine.com header.b="MmG+8dvi" Received: from ams-compute-01.internal (ams-compute-01.internal [10.64.2.61]) by mailfout.phl.internal (Postfix) with ESMTP id 4BD7AEC01F3; Wed, 19 Aug 2026 13:21:19 -0400 (EDT) Received: from ams-imap-19 ([10.64.2.39]) by ams-compute-01.internal (MEProxy); Wed, 19 Aug 2026 13:21:20 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fastmail.im; h= cc:cc:content-transfer-encoding:content-type:content-type:date :date:from:from:in-reply-to:in-reply-to:message-id:mime-version :references:reply-to:subject:subject:to:to; s=fm3; t=1787160078; x=1787246478; bh=Vpi4XMO26isCR+trSfji5hGrrTOXYenjAHeGvwnIgGk=; b= ZTbe2faaguQ0j4pbJssm68Iehm+hM8aENI1FxotUzKjbAL4VbCz3NGXsvuBADfGV 8pTkRZqdVIBQ230/sPWC/3qjMECSCC7pAmEBshMo8/4eTs724DvoNN9IuZMg6bMp t9z8+nWF8xBDQPPCUB42uWtmd87W8MCOF4gRW8iF1YRcIl9fPtSDEfqTiNmv8XRH rkv8qMSvx1Eg28dBwprV0F/tNQOaoVf+b41RerqIVnXHVhJPafpuGlm1kivUN0rs v1WMlCN2BT5ve24S4wGxG2IO61lwix7ahaa2NSXVm22IMXWj1e2f8SIQi6Y+0DMe tbb0PciBNOQMU+Cq7cj/mQ== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-transfer-encoding :content-type:content-type:date:date:feedback-id:feedback-id :from:from:in-reply-to:in-reply-to:message-id:mime-version :references:reply-to:subject:subject:to:to:x-me-proxy :x-me-sender:x-me-sender:x-sasl-enc; s=fm3; t=1787160078; x= 1787246478; bh=Vpi4XMO26isCR+trSfji5hGrrTOXYenjAHeGvwnIgGk=; b=M mG+8dviFMKu1Iic48ecXN8LWO7Fpv6efMXI6jw6eEjtmlBASPcUUJH0JEjovoNPF fzcVBXMpFicKzvGDpRlRFcyyBCCZvEQdXvXsA6gytD5o0rkRmBQVHPdA9cHYBd7n sfnSWl2Ddac/ba+vXxOyl7heqK+pn5qUgEEfob4SJq3nKmJTTmgpWjTX94G1aiSt XD0JWKX8UxEbQU/tiKxSh+zP+d38bdRxQBpd+SZeHmV1QyGr24mgBJ/JWxF5BxNd 01grvihbZypsqvPYRJMLMEwYy4z8NixAbeV6FYP+H6ZyIuxxgjhAQGCVyyH5okg4 FMPGqu7As+vDumKUIlrwQ== X-ME-Sender: X-ME-Proxy-Cause: dmFkZTEry2p1IRtHlwQ175BjwbyvRzdULnm39XDvG3GbYy2aDHzcMxZgqdYfskY8aa5RA/ 6A3G0O38rbwaTCCx42jPHVvGUU+iF7Nr5GmvFEBmvjcJOsZu8wYn9KE2lfjQtKNSVWFdZF 9i/LxrCy7J6oSwGLRXWglSjfcVeqkAGCBK7/eKm+badBzkwqxWJNtqC+6RNpPUfYtW8zOu 6v8ZzbrhyD63HsrAJ1iHc7/fF3Fz+CBfYdC/9reZDYrcDeOW5/A0V49DkBt5FHevqwnDyv s81ZAfeCDjUBymJCDj+Xm40fBUKrtfiqjvbM6rODr3AXsIPygTmauB/pgd8HQUQ9IfjFcy F17QTGFJp+uaTpO3v5geP2+wJzmDP0EHxh/bt+PyFznOQSA2bdgSiDg5XZi4vI4pnngNEn odaCxDwDs4kDgHTZ83/VC/226LotV1xQxXiniJTojmDM7mRuMLYLM5vIQuAYCMOFKlFvYt p8UiJAAODCDwoP2wA5vogy9MDBVG65WcMk7Yodu4hKliE8rsNf7gD6/hVdEkb+2Bd4cqlw kETgB9qLkhdtytpHiL8Rvw8GN8hOMaWZzm4BnyKxbMzBTiKEdVccIb0qJZ6Of0ypaGtetM kACbufnuxSAMJEwF+aX9DVJ1hOJI+pYaUpxGhllkPsj/V1C+ve9ZOEndmNUA X-ME-Proxy: Feedback-ID: i559e4809:Fastmail Received: by mailuser.ams.internal (Postfix, from userid 501) id 20B4B2F81644; Wed, 19 Aug 2026 13:21:14 -0400 (EDT) X-Mailer: MessagingEngine.com Webmail Interface Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ThreadId: Ag8pyDs4WbsN Date: Wed, 19 Aug 2026 20:20:53 +0300 From: "Alice Mikityanska" To: "Matthieu Baerts" , "Paolo Abeni" , "Jakub Kicinski" Cc: "Eric Dumazet" , "David S. Miller" , "Simon Horman" , "Shuah Khan" , netdev@vger.kernel.org, linux-kselftest@vger.kernel.org, "Alice Mikityanska" Message-Id: In-Reply-To: References: <20260814194124.3102581-1-alice.kernel@fastmail.im> <20260814194124.3102581-3-alice.kernel@fastmail.im> Subject: Re: [PATCH net-next 2/4] selftests: net: Lower threshold on debug kernels for big_tcp_tunnels.sh Content-Type: text/plain Content-Transfer-Encoding: 7bit On Sat, Aug 15, 2026, at 02:07, Matthieu Baerts wrote: > Hi Alice, > > On 14/08/2026 21:41, Alice Mikityanska wrote: >> From: Alice Mikityanska >> >> CONFIG_DEBUG_NET kernels run slower and generate fewer BIG TCP packets, >> making the test flaky on upstream CI runners. Lower the default >> threshold for those kernels. > > Thank you for looking at that! > >> Signed-off-by: Alice Mikityanska >> --- >> tools/testing/selftests/net/big_tcp_tunnels.sh | 18 ++++++++++++++++-- >> 1 file changed, 16 insertions(+), 2 deletions(-) >> >> diff --git a/tools/testing/selftests/net/big_tcp_tunnels.sh b/tools/testing/selftests/net/big_tcp_tunnels.sh >> index 9b7d0456bcc1..e27774eae20e 100755 >> --- a/tools/testing/selftests/net/big_tcp_tunnels.sh >> +++ b/tools/testing/selftests/net/big_tcp_tunnels.sh >> @@ -17,11 +17,25 @@ CLIENT_IP6="2001:db8::1:2" >> CLIENT_IP4_TUN="192.168.2.2" >> CLIENT_IP6_TUN="2001:db8::2:2" >> >> -: "${PACKETS_THRESHOLD:=1000}" >> - >> # Kselftest framework requirement - SKIP code is 4. >> ksft_skip=4 >> >> +is_debug() { >> + local config="/proc/config.gz" >> + [ -f "$config" ] || config="/boot/config-$(uname -r)" >> + [ -f "$config" ] || return 1 # No config found; assume non-debug. >> + gzip -dcfq "$config" | grep -qx 'CONFIG_DEBUG_NET=y' || return 1 > > Are you sure it is CONFIG_DEBUG_NET that causes that? It shouldn't be > that heavy. > > Do you not want to change the thresholds only for the -dbg runners using > kernel/configs/debug.config? If yes, you should check if > KSFT_MACHINE_SLOW == yes: Thanks for the suggestion! I'll switch to KSFT_MACHINE_SLOW. > https://github.com/linux-netdev/nipa/wiki/How-to-run-netdev-selftests-CI-style#dealing-with-slow-runners-in-performancelatency-tests > > Cheers, > Matt > -- > Sponsored by the NGI0 Core fund.