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#Post#: 1989--------------------------------------------------
Plugin Leak Testing
By: yqt1001 Date: October 13, 2013, 12:22 am
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Did some research on the cause of the restarts. They are
basically the server shutting down because of a memory leak,
very likely due to a plugin. The only massive widespread plugin
we have is chdistantfarm, so I'm removing that for a while and
seeing how RAM usage changes.
I'll let the tests run over a day and see if we notice anything
big. The memory usage doesn't jump much with activity, basically
ruling out a logging plugin or one that doesn't always run.
#Post#: 1990--------------------------------------------------
Re: Plugin Leak Testing
By: smjjames Date: October 13, 2013, 1:04 am
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It restarted about 10 minutes after yqt logged off.
#Post#: 1993--------------------------------------------------
Re: Plugin Leak Testing
By: b-ong Date: October 13, 2013, 8:36 am
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so distantfarm makes farms grow even though we're not there
right?
#Post#: 1994--------------------------------------------------
Re: Plugin Leak Testing
By: smjjames Date: October 13, 2013, 10:17 am
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[quote author=b-ong link=topic=164.msg1993#msg1993
date=1381671396]
so distantfarm makes farms grow even though we're not there
right?
[/quote]
Yep.
#Post#: 1995--------------------------------------------------
Re: Plugin Leak Testing
By: yqt1001 Date: October 13, 2013, 12:10 pm
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chdistantfarm is not the problem.
#Post#: 2001--------------------------------------------------
Re: Plugin Leak Testing
By: Bla Date: October 14, 2013, 6:19 am
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Our current plugins:
AutoSaveWorld
BorderGuard
CHDistantFarm
DeathChest
Essentials
LWC
MFS
OnTime
PermissionsBukkit 2.0
ProperTime
RollingMinecarts
SafeCreeper
Vault
WorldEdit
And the logging plugin
Ok let us continue the research on the server problems:
Could CHDistantFarm be the cause of the restarts?
- Yqt has disabled the plugin, and while it was disabled, we
still experienced restarts, meaning that it is unlikely to be
the cause of the problem.
Could RollingMinecarts be the cause of the restarts?
- This plugin was installed after the problems began, so this is
probably not the cause of the problems.
Could the automatic restarts every 4 hour be causing all the
restarts?
- Bla has decreased the automatic restarts to once every 24
hours around October 13-14 midnight UTC. We need more evidence
to know whether this could affect all the restarts.
Could the restarts be caused by the server running out of SSD
memory?
- Bla has removed 307 MB of logs around October 13-14 midnight
UTC. We need more evidence to know whether this could affect all
the restarts.
Could the logging plugin be the reason for the restarts?
- Bla has changed the settings of the logging plugin. It has
been set to track fewer non-player actions such as natural mob
spawning (the entity logs make up 75% of a typical log set, of
which natural mob spawning makes up a large part). We need more
evidence to know whether this could affect the restarts or
performance for sure, but there should be good reason to think
that it will reduce lag.
20131014 13:48 UTC: Two restarts have happened over the past 10
minutes while playing with **** and smj. Bla has been digging
thousands of sand blocks with eff 4 shovel which might
contribute to server problems. So it seems unlikely that the
above things have affected the restarts.
#Post#: 2002--------------------------------------------------
Re: Plugin Leak Testing
By: smjjames Date: October 14, 2013, 7:50 am
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Yqt said he is running a plugin monitoring thing that is part of
Bukkit to try and see about memory usage.
#Post#: 2005--------------------------------------------------
Re: Plugin Leak Testing
By: Bla Date: October 14, 2013, 2:19 pm
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Updates:
For the past few hours, we had disabled the logging plugin, but
the server had still crashed twice and restarted at least 5
times while I, Blotz, smj, Thomas and Yqt were on. So it seems
that the logging plugin is not the cause of the problems.
We have now updated OnTime to see if this could help. - It
appears that this did not fix the problems.
#Post#: 2006--------------------------------------------------
Re: Plugin Leak Testing
By: smjjames Date: October 14, 2013, 2:24 pm
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At least we got the question of the logging plugin out of the
way.
Try safecreeper maybe?
#Post#: 2007--------------------------------------------------
Re: Plugin Leak Testing
By: Bla Date: October 14, 2013, 2:35 pm
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SafeCreeper is now off. Be careful.
Edit: 2 restarts and a crash since turning it off, so it's
probably not SafeCreeper. Turned it back on.
Now removing BorderGuard. 2 crashes have happened, so it
probably is not BorderGuard.
Edit: Yqt says he tested WorldEdit and that disabling it didn't
help with the crashes. The crashes happened at least 2 times.
Now removing AutoSaveWorld.
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