From nobody Sun Oct 16 08:50:38 2022 X-Original-To: freebsd-hackers@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4Mqv3P6KR4z4fkh0 for ; Sun, 16 Oct 2022 08:50:41 +0000 (UTC) (envelope-from wojtek@puchar.net) Received: from puchar.net (puchar.net [194.1.144.90]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4Mqv3P0Xzlz46Hj for ; Sun, 16 Oct 2022 08:50:40 +0000 (UTC) (envelope-from wojtek@puchar.net) Received: Received: from 127.0.0.1 (localhost [127.0.0.1]) by puchar.net (8.15.2/8.16.1) with ESMTPS id 29G8odoa064771 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Sun, 16 Oct 2022 10:50:39 +0200 (CEST) (envelope-from wojtek@puchar.net) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=puchar.net; s=default; t=1665910239; bh=npL5L75JQMdPsp3JBqxIYJD81Qk+YogfA52Ke3iFxtA=; h=Date:From:To:cc:Subject:In-Reply-To:References; b=uA0Dnqe3NYHRjzIPWuEeNdn09VHXCRddKIXdKqJpRdMAzkjC6X6i8I4sg852eg7W3 ANF7ozPHjrfVSThtsQTHkRPcEq+bE2qE6s8EZm/P9Dvkd41M9apdkxCTQn3qW9/DjY /dG/uYT4CNep7jMosqVOSqwbGP9jKBO4VyXdIhiw= Received: from wojtek.intra (localhost [127.0.0.1]) by wojtek.intra (8.16.1/8.16.1) with ESMTP id 29G8ocka025398; Sun, 16 Oct 2022 10:50:38 +0200 (CEST) (envelope-from wojtek@puchar.net) Received: from localhost (wojtek@localhost) by wojtek.intra (8.16.1/8.16.1/Submit) with ESMTP id 29G8ockE025395; Sun, 16 Oct 2022 10:50:38 +0200 (CEST) (envelope-from wojtek@puchar.net) X-Authentication-Warning: wojtek.intra: wojtek owned process doing -bs Date: Sun, 16 Oct 2022 10:50:38 +0200 (CEST) From: Wojciech Puchar To: "Rodney W. Grimes" cc: freebsd-hackers@FreeBSD.org Subject: Re: is this FreeBSD problem or HP switch In-Reply-To: <202210141359.29EDxumV071505@gndrsh.dnsmgr.net> Message-ID: <45787d6b-6d1-a7ed-aff5-bebbc3d3d7fd@puchar.net> References: <202210141359.29EDxumV071505@gndrsh.dnsmgr.net> List-Id: Technical discussions relating to FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-hackers List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-hackers@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed X-Rspamd-Queue-Id: 4Mqv3P0Xzlz46Hj X-Spamd-Bar: --- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=puchar.net header.s=default header.b=uA0Dnqe3; dmarc=none; spf=pass (mx1.freebsd.org: domain of wojtek@puchar.net designates 194.1.144.90 as permitted sender) smtp.mailfrom=wojtek@puchar.net X-Spamd-Result: default: False [-3.42 / 15.00]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; NEURAL_HAM_SHORT(-1.00)[-1.000]; NEURAL_HAM_LONG(-0.92)[-0.919]; R_SPF_ALLOW(-0.20)[+mx:c]; R_DKIM_ALLOW(-0.20)[puchar.net:s=default]; MIME_GOOD(-0.10)[text/plain]; MLMMJ_DEST(0.00)[freebsd-hackers@FreeBSD.org]; FROM_EQ_ENVFROM(0.00)[]; ARC_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; RCPT_COUNT_TWO(0.00)[2]; RCVD_TLS_LAST(0.00)[]; DKIM_TRACE(0.00)[puchar.net:+]; RCVD_COUNT_THREE(0.00)[3]; ASN(0.00)[asn:43476, ipnet:194.1.144.0/24, country:PL]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_SOME(0.00)[]; TO_DN_SOME(0.00)[]; DMARC_NA(0.00)[puchar.net]; HAS_XAW(0.00)[]; MID_RHS_MATCH_FROM(0.00)[] X-ThisMailContainsUnwantedMimeParts: N > going to see random ping times and/or drops. > > This is not a FreeBSD problem, different switches may behave differently, > mostly dependent on the size of output buffers. Thank you. this is what i thought it is, because just limiting (by upfw) traffic to even 98% of maximum solves the problem > > Is the traffic from A to B something that has some type of congestion > algorithm? If it is TCP can you turn on ECN, and enable ECN in the > switch? > > > -- > Rod Grimes rgrimes@freebsd.org > >