Begin forwarded message:
Date: Thu, 07 Jun 2018 13:21:23 +0000
From: bugzilla-dae...@bugzilla.kernel.org
To: step...@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: step...@networkplumber.org
Reporter: trevor.fran...@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
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