From nobody Sat Nov 04 02:37:55 2023 X-Original-To: freebsd-net@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 4SMhcF4J62z50J25 for ; Sat, 4 Nov 2023 02:38:05 +0000 (UTC) (envelope-from yuri@FreeBSD.org) Received: from shell1.rawbw.com (shell1.rawbw.com [198.144.192.42]) by mx1.freebsd.org (Postfix) with ESMTP id 4SMhcD5x9zz3Jlq for ; Sat, 4 Nov 2023 02:38:04 +0000 (UTC) (envelope-from yuri@FreeBSD.org) Authentication-Results: mx1.freebsd.org; dkim=none; spf=softfail (mx1.freebsd.org: 198.144.192.42 is neither permitted nor denied by domain of yuri@FreeBSD.org) smtp.mailfrom=yuri@FreeBSD.org; dmarc=none Received: from [192.168.5.3] (c-73-70-62-113.hsd1.ca.comcast.net [73.70.62.113]) (authenticated bits=0) by shell1.rawbw.com (8.15.1/8.15.1) with ESMTPSA id 3A42bua8083047 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NO) for ; Fri, 3 Nov 2023 19:37:57 -0700 (PDT) (envelope-from yuri@FreeBSD.org) X-Authentication-Warning: shell1.rawbw.com: Host c-73-70-62-113.hsd1.ca.comcast.net [73.70.62.113] claimed to be [192.168.5.3] Message-ID: <8a967a3e-ef9c-4bc7-93e4-a5bca52ba9cf@FreeBSD.org> Date: Fri, 3 Nov 2023 19:37:55 -0700 List-Id: Networking and TCP/IP with FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-net List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-net@freebsd.org MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: Network starvation question Content-Language: en-US To: "freebsd-net@freebsd.org" References: From: Yuri In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Spamd-Result: default: False [2.54 / 15.00]; VIOLATED_DIRECT_SPF(3.50)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_SHORT(-0.64)[-0.642]; NEURAL_SPAM_MEDIUM(0.57)[0.571]; RCVD_NO_TLS_LAST(0.10)[]; MIME_GOOD(-0.10)[text/plain]; ONCE_RECEIVED(0.10)[]; XM_UA_NO_VERSION(0.01)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; DMARC_NA(0.00)[freebsd.org]; FROM_HAS_DN(0.00)[]; PREVIOUSLY_DELIVERED(0.00)[freebsd-net@freebsd.org]; RCPT_COUNT_ONE(0.00)[1]; FREEFALL_USER(0.00)[yuri]; TO_DOM_EQ_FROM_DOM(0.00)[]; TO_DN_EQ_ADDR_ALL(0.00)[]; RCVD_COUNT_ONE(0.00)[1]; R_SPF_SOFTFAIL(0.00)[~all]; HAS_XAW(0.00)[]; ARC_NA(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; R_DKIM_NA(0.00)[]; MID_RHS_MATCH_FROM(0.00)[]; ASN(0.00)[asn:7961, ipnet:198.144.192.0/23, country:US]; MLMMJ_DEST(0.00)[freebsd-net@freebsd.org] X-Rspamd-Queue-Id: 4SMhcD5x9zz3Jlq X-Spamd-Bar: ++ Router is also involved, and the provider's network as well. But I think that there is a bug in the FreeBSD's network code that it allows a slower TCP connection to be hammered like this, unless there is a good explanation for this observation. Yuri