*** This bug is a duplicate of bug 1839592 ***
https://bugs.launchpad.net/bugs/1839592
I think that's a fairly safe assumption @lathiat so I'm going to dupe
this bug against that one.
** This bug has been marked a duplicate of bug 1839592
Open vSwitch (Version 2.9.2) goes into deadlocked
Seems there is a good chance at least some of the people commenting or
affected by this bug are duplicate of Bug #1839592 - essentially a libc6
bug that meant threads weren't woken up when they should have been.
Fixed by libc6 upgrade to 2.27-3ubuntu1.3 in bionic.
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Title:
ovs-vswitchd thread consuming 100% CPU
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yes,
dpkg -l | grep libc6
ii libc6:amd64 2.29-0ubuntu2
amd64GNU C Library: Shared libraries
ii libc6-dev:amd64 2.29-0ubuntu2
amd64GNU C Library: Development Libraries and
libc6?? ubuntu 1904 source?
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https://bugs.launchpad.net/bugs/1827264
Title:
ovs-vswitchd thread consuming 100% CPU
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We managed to solve the problem by installing the libc version from the
ubuntu disco repository.
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Title:
ovs-vswitchd thread consuming 100% CPU
** Information type changed from Public to Public Security
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Title:
ovs-vswitchd thread consuming 100% CPU
To manage notifications about this
I know this has been open for a year now, but for what it's worth, we're
seeing the same issue on two of our three Neutron nodes. A whole lot of
entries in /var/log/openvswitch/ovs-vswitchd.log like the following:
2020-05-22T00:19:25.581Z|18410|poll_loop(handler74)|INFO|Dropped 2973816 log
We are also seeing this in bionic with rocky neutron-openvswitch-agents.
We haven't really found any pattern in when it occurs, but even after
emptying out a compute node with live migrations and rebooting it, we
will keep seeing it. Amount of traffic doesn't seem to be related.
What we are
We catch this problem about a couple of times a week and have found a
pretty non-trivial way to fix it quickly.
In crontab: watchdog_openvswitch.sh
#!/bin/bash
timeout 10 ovs-appctl version &>/dev/null
if [[ "$?" != "0" ]]; then
echo "run strace for fix openvswitch"
timeout 5 strace -f
Same on bionic with stein and ovs 2.11.0.
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Title:
ovs-vswitchd thread consuming 100% CPU
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A bit of follow up on this:
strace on the thread in question shows the following:
13:35:47 poll([{fd=23, events=POLLIN}], 1, 0) = 0 (Timeout) <0.18>
13:35:47 epoll_wait(42, [{EPOLLIN, {u32=3, u64=3}}], 9, 0) = 1 <0.18>
13:35:47 recvmsg(417, {msg_namelen=0}, MSG_DONTWAIT) = -1 EAGAIN
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: openvswitch (Ubuntu)
Status: New => Confirmed
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Title:
I have same issue with highload cpu usage on network node Openstack Rocky
Ubuntu 18.04
Kernel 4.15.0-48-generic #51-Ubuntu
Package:
ii neutron-openvswitch-agent 2:13.0.2-0ubuntu3.1~cloud0
all Neutron is a virtual network service for Openstack - Open
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