Bob Tanner

Dual Intel(R) Xeon(R) CPU E7520 @ 1.87GHz
4GB of RAM
2GB of swap
Ubuntu 16.04.6

java version "1.8.0_201"
Java(TM) SE Runtime Environment (build 1.8.0_201-b09)
Java HotSpot(TM) 64-Bit Server VM (build 25.201-b09, mixed mode)

java -server -Xms512M -Xmx4096M -XX:+UseG1GC -XX:+CMSIncrementalPacing -XX:+AggressiveOpts -jar /opt/msm/servers/Dorkville/server.jar nogui

KiB Mem : 4046312 total, 2816240 free, 984832 used, 245240 buff/cache
KiB Swap: 2096124 total, 2096124 free, 0 used. 2804164 avail Mem

I've read this thread and I do not see a resolution so I'm adding some of my crashplan logs and my latest log with /debug start enabled

On an idle server with no one logged in with /debug start my logs quickly fill up with

{{[20:51:59] [Server thread/WARN]: Something's taking too long! 'root.tick.levels' took aprox 117.042054 ms
[20:51:59] [Server thread/WARN]: Something's taking too long! 'root.tick' took aprox 117.640817 ms
[20:51:59] [Server thread/WARN]: Something's taking too long! 'root' took aprox 118.758035 ms}}

"Adjusting" the hardware has no effect on the frequency of the crashes.

• RAM up to 64GB

• 4 CPUs

• Various different java options

My previous ticket was closed with a link to this ticket and the the closing message was, "This is caused by severe server lag".

I am playing on a Gigabit Ethernet link with the server on a 10GB link. I do not think the problem is "network lag".

You can see the server doesn't use any swap and there over 2G of RAM free and the CPU is around 1.2 load average. I do not think the server is working hard or over loaded.

Are there option or things I can to to help debug this problem?

Changed to java's options?

Thank you for your time.