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<div class="moz-cite-prefix">On 03/09/2018 08:00 AM, Anthony Giggins
wrote:<br>
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<blockquote type="cite"
cite="mid:CAKpY+aqu76FznkL_MB0rLHOSyZjSa4CG20Uzi6MJMqK7x6N+7Q@mail.gmail.com">
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<div class="gmail_quote">On 9 March 2018 at 09:31, James
Abernathy <span dir="ltr"><<a
href="mailto:jfabernathy@gmail.com" target="_blank"
moz-do-not-send="true">jfabernathy@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
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<div
style="word-wrap:break-word;line-break:after-white-space">I’ve
setup my mythtv backend to daily optimize and backup the
database. I have it email me with the results. So when
I don’t get the 2 emails at 7:35am each day, I go
looking for problems. The system still records problems
and the frontends work for viewing.
<div><br>
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<div>What I’ve seen lately is I can’t ssh or login at
the PC console of the backend, and I get errors on the
console like:</div>
<div>
<div>Mar 7 12:11:47 mythbuntu kernel: [317584.873671]
NMI watchdog: BUG: soft lockup - CPU#4 stuck for
22s! [TFWWrite:25774]</div>
<div>Mar 7 12:12:15 mythbuntu kernel: [317612.872998]
NMI watchdog: BUG: soft lockup - CPU#4 stuck for
23s! [TFWWrite:25774]</div>
<div>Mar 7 12:12:55 mythbuntu kernel: [317652.872033]
NMI watchdog: BUG: soft lockup - CPU#4 stuck for
23s! [TFWWrite:25774]</div>
<div>Mar 7 12:13:23 mythbuntu kernel: [317680.871359]
NMI watchdog: BUG: soft lockup - CPU#4 stuck for
22s! [TFWWrite:25774]</div>
<div><br>
</div>
<div>The Host name is mythbuntu. It’s a Ubuntu 16.04
system</div>
<div><br>
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<div>Once I reboot, the system works fine and I get my
optimize emails after a short time. But a day or so
later I notice this problem again. I have not
changed anything, but I have done some updating
using: apt update and apt upgrade.</div>
<div><br>
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<div>Any ideas??</div>
<div><br>
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<div>
<div
style="color:rgb(0,0,0);letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;word-wrap:break-word">Jim
Abernathy<br>
<a href="mailto:jfabernathy@gmail.com"
target="_blank" moz-do-not-send="true">jfabernathy@gmail.com</a><br>
<br>
<br>
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<div>Jim try installing mcelog (sudo apt-get install
mcelog) and check /var/log/mcelog after the error has
occurred.</div>
<div><br>
</div>
<div>you should also see those log errors in you
/var/log/syslog and dmesg which might give you more
detail </div>
<div><br>
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<div>I dont think you've mentioned what hardware this is
running on?</div>
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<br>
The backend hardware is a Intel Core i7-2700K. It's running Ubuntu
Server 16.04.4. 4.4.0-116-generic x86_64.<br>
<br>
Jim A<br>
<br>
<blockquote type="cite"
cite="mid:CAKpY+aqu76FznkL_MB0rLHOSyZjSa4CG20Uzi6MJMqK7x6N+7Q@mail.gmail.com">
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<div>Cheers,</div>
<div><br>
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<div>Anthony</div>
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