extreme tps lag on Craft to Exile 2 modpack
Modpack: Craft to Exile 2 1.0.7
DH 2.3.4b
PC Specs: 7800x3d, 32GB DDR5, nvme SSD, OS Linux (CachyOS/Clear Linux), openJDK21
Xms/Xmx 10G/20G
While generating LOD, time essentially freezes for 10 of seconds every few seconds, and the generation is extremely slow. CPU usage does not really go up either.
pregen 256 takes about 10 hours to complete at about 7cps
Modpack works fine without Distant Horizons
What I've tried:
>distantGeneratorMode FEATURE/INTERNAL SERVER
>numberOfThreads 4/8/16
>threadRunTimeRatio 0.8/1.0
17 Replies
Internal Server will lag the server more during generation, but then less after the generation when player move around
If you want less lag reduce the DH CPU load
If you want faster generation increase the DH CPU load
If your server can’t handle the generation when players are on the server, pregen the LODs (optionally chunks too) before playing and during gameplay reduce CPU load to minimum and/or disable distant gen on the server all together
Thank you for the reply, i have already tried pregenning but pregenning only 1000 chunks takes hours
this is pregen 256 and it takes like 10 hours on a fresh world without any players.
Yeah, generation is slow, especially with some worldgen mods and Internal Server gen mode
!slowgen
World generation in general is quite slow, if you want to speed it up:
Install Noisium, Lithium and C2ME(DH 2.3.0+). These mods can improve generation speed by a bit, but it will still not be fast.
Increase
CPU Load in Distant Horizons settings for faster generation, but you will experience more lag spikes and stuttering due to heavier workload on CPU.
To see if Distant Generator is really working or not:
1) Check CPU usage while in-game, using Aggressive settings of CPU Load. If CPU usage's hovering around 80-100%, the LoDs are generating in the background.
2) Go to DH settings > Advanced Options > Debug > Wireframe, set Enable Debug Wireframe Rendering and Show World Gen Queue to True.
Enabling both settings will show you the visualization of world gen tasks queued and working on the map (blue boxes for queued tasks, red boxes for working tasks)it's slow but it's not supposed to be 7cps slow right?
also on other modpacks it's still playable while generating, this modpack the whole gameworld just freezes
Do you have C2ME?
If on INTERNAL_SERVER and without it, the generation can be tens of times slower than with C2ME or on FEATURES
There can also be some mod compat issue at play
In this case you can check the raw DH only, or better DH + performance mods, performance
And perform a
!binary
Try a binary search and figure out which mod is causing it.
So disable half of the mods, see if issue is still there, if yes disable half again etc etc until you find the mod that's causing the issue.
To find the problematic mod
thanks again.
the modpack is on forge so it's not on c2me.
on FEATURES it seemed to be slower than INTERNAL_SERVER
i also have already tried disabled about a dozen of mods (mostly performance related mods) to find the problematic mod but i still havn't identified one
the game world freezes like this and is unplayable when it's generating LOD (you can see the NPCs are frozen in place)
and here's a mostly vanilla setup, you can see when it's generating LOD it's still playable
You can use Sinitra Connector (or something like that) to run C2ME on forge
Even it it seems that INTERNAL is faster, it is just impossible for it to be so
Features can run on multiple threads at the same time, and uses more efficient Generation method
Internal just called MC code, runs on 1 thread at most (unless C2ME is installed) and does not have any improvements
i have forgot about sinytra connector. i am testing it now.
seems to be working! (have to disable Canary)
its giving a lot of errors in the log but so far it's been working, i am identifying the issue.
[CheckedThreadLocalRandom/]: ThreadLocalRandom accessed from a different thread (owner: Server thread, current: C2ME worker #11)
I just found out dimensional theading is in the pack and is playing a huge part in the issue
Interesting finding.
this issue seems to be caused by the mod Enhanced AI
after removing enhanced AI the error message changes but theres still frequent errors