From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Hemminger Subject: Fw: [Bug 199963] New: UDP rx_queue incorrect calculation in /proc/net/udp Date: Thu, 7 Jun 2018 07:39:18 -0700 Message-ID: <20180607073918.5626370d@xeon-e3> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit To: netdev@vger.kernel.org Return-path: Received: from mail-pl0-f49.google.com ([209.85.160.49]:43986 "EHLO mail-pl0-f49.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933873AbeFGOjW (ORCPT ); Thu, 7 Jun 2018 10:39:22 -0400 Received: by mail-pl0-f49.google.com with SMTP id c41-v6so6267268plj.10 for ; Thu, 07 Jun 2018 07:39:22 -0700 (PDT) Received: from xeon-e3 (204-195-35-107.wavecable.com. [204.195.35.107]) by smtp.gmail.com with ESMTPSA id s14-v6sm16770838pfh.116.2018.06.07.07.39.21 for (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Thu, 07 Jun 2018 07:39:21 -0700 (PDT) Sender: netdev-owner@vger.kernel.org List-ID: Begin forwarded message: Date: Thu, 07 Jun 2018 13:21:23 +0000 From: bugzilla-daemon@bugzilla.kernel.org To: stephen@networkplumber.org Subject: [Bug 199963] New: UDP rx_queue incorrect calculation in /proc/net/udp https://bugzilla.kernel.org/show_bug.cgi?id=199963 Bug ID: 199963 Summary: UDP rx_queue incorrect calculation in /proc/net/udp Product: Networking Version: 2.5 Kernel Version: Kernels >= 4.15 Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: IPV4 Assignee: stephen@networkplumber.org Reporter: trevor.francis@46labs.com Regression: No since upgrading to any kernel >= 4.15 the rx_queue in /proc/net/udp is now reporting a queue, regardless of system load and regardless of what applications are running on it. The tx_queue is always 0, but rx_queue has seemingly random spikes of udp queueing. This is observed across hundreds of servers with either varying or no workload. netstat -nl|grep ^udp udp 4352 0 0.0.0.0:68 0.0.0.0:* sl local_address rem_address st tx_queue rx_queue tr tm->when retrnsmt uid timeout inode ref pointer drops 14645: 3500007F:0035 00000000:0000 07 00000000:0000C900 00:00000000 00000000 101 0 3367 2 ffff8da177fdcc00 0 -- You are receiving this mail because: You are the assignee for the bug.