Problem How many players?

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Deimos

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Jul 29, 2019
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Hello,

I am running a DireWolf20 1.0.3 server and I am wondering how many players my server should be able to handle?
My server details are;
Processor Intel Xeon E3 1245v2
Cores/Threads 4 cores/ 8 threads
Frequency 3.4 GHz+
RAM 16 GB DDR3 (Able to go to 32)
Network connection 1 Gbps
Bandwidth 250 Mbps


I seem to get 10 players and then there is noticeable loss in performance. I've set the view distence to 6 to try and limit the number of loaded chunks.
 
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DZCreeper

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Jul 29, 2019
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Well you obviously aren't hitting a memory limitation unless you set the startup script wrong. Have you done any profiling? If not, do some and post the results here.
 
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Deimos

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Jul 29, 2019
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DZCreeper said:
Well you obviously aren't hitting a memory limitation unless you set the startup script wrong. Have you done any profiling? If not, do some and post the results here.
Click to expand...
This is what my lead Admin put together.

But this is my startup script
Code: 
cd "$(dirname "$0")"
if [ ! -f minecraft_server.1.7.10.jar ]; then
   echo "running install script!"
   ./FTBInstall.sh
fi
echo "make sure to read eula.txt before playing!"
java -server -Xms2048m -Xmx3072m -XX:PermSize=256m -XX:+UseParNewGC -XX:+UseConcMarkSweepGC -jar FTBServer-1.7.10-1272.jar nogui

I've not done any profiling, because to behonest Im not sure what I'm doing.
My lead admin who was doing everything has just taken a step back to focus on his grades and stuff and it has now left me with a cripiled server and me not really knowing what to do.
When it was vanillia I was fine, but modded is so much more involved :p
 
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DZCreeper

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Jul 29, 2019
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Connor Gavitt said:
I've found increasing the press to 512MB really helps RAM usage in the new packs.
Click to expand...

He means increasing the permgen. I wouldn't advise going straight to 512MB though, increment it in 64MB jumps. Or try Java 8, it does away with permgen. Not to say it doesn't use permgen, it just automatically sizes it.
 
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Deimos

New Member
Jul 29, 2019
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DZCreeper said:
Try this for the JVM arguments portion:

java -server -Xms4G -Xmx4G -XX:permSize=256m -jar FTBServer-1.7.10-1272.jar nogui

Also, make sure to install FastCraft on the server. It goes in the mods folder. http://files.player.to/fastcraft-1.12.jar

If you are still having issues send me a PM on these forums, (Reddit)http://www.reddit.com/user/DZCreeper, or (Steam)http://steamcommunity.com/id/DZCreeper/.
Click to expand...
Thanks man.

Would my players have to install FastCraft client side in order to join?

Edit: Thanks for suggesting that mod man.
I use to get "Can't Keep up" spamming every two seconds. Now, I think i've seen it 4 times in the past 4 hours.
 
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DZCreeper

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Jul 29, 2019
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Connor Gavitt said:
What kind of storage are you using? HDD, SSD, Fusion?
Click to expand...

Assuming its an OVH server like I suspect, its either 2 x 2 TB hard HDD's or 3 120GB SSD's. With 10 players running hard drives is not a problem, especially if the world is pre-generated.
 
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DZCreeper

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Jul 29, 2019
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Deimos said:
2x 2TB HDD


The world is not pregenned. Should I pregen it? The players have filled out quite a bit of it.
Click to expand...

Not unless you are having performance issues while players are exploring.

Glad to hear FastCraft is working well for you by the way. Since 1.1.3 it includes a version checker and apparently 1.1.6 is quite impressive in terms of chunk generation performance.

Its still experimental but seems stable from what I can see. Read this forum thread page for the changes and download link: http://forum.industrial-craft.net/index.php?page=Thread&threadID=10820&pageNo=12
 
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