Hi, On 2021-07-07 7:59 a.m., Dan Ritter wrote: > w f wrote: >> I locally host and maintain some Minecraft (Java) servers for my kids and their friends. This morning, I kicked everyone off the servers while I did some routine maintenance. I finished with a standard sudo apt update && sudo apt full-upgrade >> A few things were updated - PHP, a library or two, and the kernel from 4.19.0-16-amd64 to 4.19.0-17-amd64 >> All went fine. >> After I was done, I rebooted the system and fired up the MC servers. As soon as a player joins an MC server, the CPU usage on all cores slams to 100% and stays there. The game is unplayable. >> Nothing has changed with regards to the versions of game server, game clients, or Java. >> Debian buster.Oracle Java 16.0.1 >> Is there any way to downgrade back to 4.19.0-16-amd64 ... ? > Yes you can downgrand apt-get downlaod linux-image-4.19.0-16-amd64 dpkg -i linux-image-4.19.0.16-amd64.deb > Probably, but I can attest that > > openjdk-11-jre-headless > > runs Minecraft servers perfectly well with that kernel, so > perhaps switching Java runtimes is a less drastic choice. > I'd go with using openjdk-11-jre-headless As it's not a solution to downgrade the kernel, what do you do after this ? Stay with this kernel and hope it will be fixed for the next update (not knowing what's causing the issue)... > -dsr- > -- Polyna-Maude R.-Summerside -Be smart, Be wise, Support opensource development
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