FTB Unleashed Server Random Lag

[ThermalCraft]

Hi,

We run an FTB Unleashed 1.1.7 server, randomly we get the TPS dropping to around 14-16TPS, mostly though it shows as 20TPS.

I've banned hoppers, and removed any I can see on server and looked for any other lagging items. but I cant find source of lag?

Players also complain of lag at spawn, however we do not have anything complex there?

Please see timings below;
www.aikar.co/timings.php?url=890c5e7b803d51516dbc073ad8899b3c

Plugins:
AutoSaveWorld, Autorank, Banitem, BedCraftDUPE,BedcraftGP, ChestShop, ClearLag, Cobrakits, CraftBay, EnjinMinecraftPlugin, Essentials, GriefPreventionData, Group Manager, LWC, MoneyDrop, NPC Warehouse, PlayerHeads,PluginMetrics, PRISM, RankBot, ScheduledAnnoucer2, Skywars, SpamTrap, SurvivalGames, Updater, VoteCommand, Votifier, VoxelSniper, WorldEdit, WorldBorder, WorldGuard, mcmmo, update

Server Specs:

E3-1225v2
32 GB DDR3 ECC RAM
x2 120GB SSDs (RAID-1)
1gbps Uplink
Debian Linux 7.5

Thanks in advance,

- James

 

[Wagon153]

Groupmanager and Autorank are both causing significant amounts of time to tick, Groupmanager taking up to 66 milliseconds, while autorank goes up to 260 milliseconds.

You should not be going above 50 milliseconds total timing.

 

[ThermalCraft]

HI,

Just noticed that file was only for 21secs, see this one I ran for 23mins

http://www.aikar.co/timings.php?url=106765f829eec7367f7697b2fdaab4e1

Please provide any recommendations if possible, thanks

 

[Wagon153]

Well this time, I noticed grief prevention was causing lag spikes, taking 123 milliseconds to tick. This may be your problem. That combined with the lag spike autorank and groupmanager caused on the 21 second report, those seem to be what is causing it.