Performance issues on FTB Direwolf20 on Dell R720 servers.

[bmiest]

Hi,

From the moment me and my friends split up the server ticks start to stack up and it becomes unplayable:

[01:06:00] [Server thread/WARN]: Can't keep up! Is the server overloaded? Running 2142ms or 42 ticks behind
[01:06:22] [Server thread/WARN]: Can't keep up! Is the server overloaded? Running 6731ms or 134 ticks behind
[01:06:46] [Server thread/WARN]: Can't keep up! Is the server overloaded? Running 9712ms or 194 ticks behind
[01:07:15] [Server thread/WARN]: Can't keep up! Is the server overloaded? Running 13598ms or 271 ticks behind
[01:07:41] [Server thread/WARN]: Can't keep up! Is the server overloaded? Running 11121ms or 222 ticks behind
[01:08:07] [Server thread/WARN]: Can't keep up! Is the server overloaded? Running 10543ms or 210 ticks behind


I have 2 Dell Servers running ubuntu 20.04 bare metal and running in a docker container, my compose file:

services:
mc:
image: itzg/minecraft-server:java8-multiarch
ports:
- "21337:25565"
environment:
EULA: "TRUE"
TYPE: "FTBA"
ADMIN_NAME: "Bmiest"
FTB_MODPACK_ID: "79"
FTB_MODPACK_VERSION_ID: "224"
MOTD: "XXX"
OPS: "Bmiest,LethalCookies"
PVP: "true"
TZ: "Europe/Brussels"
MAX_MEMORY: "16G"
INIT_MEMORY: "8G"
ENABLE_AUTOPAUSE: "TRUE"
GUI: "FALSE"
USE_AIKAR_FLAGS: "true"
ENABLE_STATUS: "true"
# LEVEL_TYPE: flat
# GENERATOR_SETTINGS: "minecraft:bedrock,60*minecraft:dirt,minecraft:grass_block;minecraftlains"
# SPAWN_PROTECTION: "0"
# SPAWN_ANIMALS: "false"
restart: unless-stopped
volumes:
# attach the relative directory 'data' to the container's /data path
- ./data:/data
#- ./data:/home/docker:rw


Is there anything I can do to make this playable on my dated, but still very decent servers? Is this really a single thread issue with FTB?

KR

Bmiest