Can't keep up!

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R4b

New Member
Jul 29, 2019
16
0
0
Hi all,

I am frequently getting this message on my server console married with a lag spike, happens frequently while Mystcraft dimensions are being travelled to but not exclusively.
Code:
[WARNING] Can't keep up! Did the system time change, or is the server overloaded?

Neither of these points apply. I am running a small private server (6-8 players) with FTB Unhinged and a few extra mods including ForgeEssentials. This problem has occured before I added the extra mods and still occurs now. I installed TickThreading which solved this issues completely but inevitably ran into problems with it and had to uninstall it.

I cannot pinpoint what is causing these spikes of lag and why the system can't keep up. I'm slowing coming to the conclusion that this is just the nature of running a server with lots of mods and is caused by design an by no fault of my own or my servers. I've also read its likely not RAM and more likely my processor if not my configs. However, I'd struggle to see why it would be my processor (see specs below).

I'm coming here to see if anyone can either confirm this for me or help me at all.

My server specs:
Host/server: OVH - Mini SP SSD (Dedicated)
OS: Debian 7
Technology: Ivy Bridge
CPU: Intel Xeon E3 1245v2 (4 cores / 8 Threads)
Frequency: 3.4GHz (3.8GHz Turbo Boost)
RAM: 32 GB DDR3
Hard disk: 2 x 120GB SSD
Bandwidth: 200 Mbps guaranteed

My java startup parameters (I'm using McMyAdmin this is from the config file):
Code:
Java.Path=detect
Java.Memory=3072
Java.VM=server
Java.GC=default
Java.useIKVM=False
Java.IKVMpath=
Java.CustomOpts=-Xms3072m -Xmn768m -XX:TargetSurvivorRatio=80 -XX:MaxTenuringThreshold=31 -XX:+UseParNewGC -XX:+UseConcMarkSweepGC -XX:+DisableExplicitGC -XX:MaxGCPauseMillis=40 -XX:GCPauseIntervalMillis=400 -XX:+AggressiveOpts -XX:PermSize=1024m -XX:+TieredCompilation -XX:ReservedCodeCacheSize=2048m -XX:+UseCodeCacheFlushing -XX:CompileThreshold=1000
 

R4b

New Member
Jul 29, 2019
16
0
0
Hi, thanks for your reply.

I didn't mention explicitly in the OP but the server is entirely forge based so no plugins at all.