started up a local server for friends and I. at the start world worked fine but after 1-2 days of playing, any time me or buddy joined server would deadlock with no errors but in task manager you can see cpu usage ranging from 8-10% maxxing out one of the cpu cores 100%. this issue was happening every time a player would join/die-respawn/change dims.
after testing i thought it was chunks causing the issues but after digging around i found the server wasnt able to sync properly with the client which would cause the deadlock-loop effect.
also these deadlocks puts out NO errors or profiling reports even in debug shows nothing.
Comments 7
this happens on anything, vanilla-spigot-forge (mods or mods)
Hardware:
Ryzan 2700x with 32 gigs of 3200 ddr4 ram running server on a 3g/bs M2 samsung evo 970 - nothing else installed on HDD - allocted 16 gigs of ram for server.
it happens with large pregen worlds - heres the download link
http://www.mediafire.com/file/ci93do7wrwh51ev/Earth.zip/file
simple earth map ratio of 1:2000
and yes i have used forceupgrade and erase cache. the issue happens more u play the world. esp when u travel to and from nether.
quick way to see this happen is die and respawn few times.
again its a deadlock not a crash so no errors will be shown. ive dealt with looping deadlocks coding java servers for other games. thats how i found this. something is looping with client-server connections.
max-tick-time=1 < deadlocks
max-tick-time=60000 throws a watchdog crash for no reaosn
also i am using forge modded version with same bug but whats strange is that mod events over time still work fine even tho server is deadlocked state.
even right now second i enter the nether server deadlocks and kicks me. also im only one on the local server.
same issue also happens when a buddy would join server and server would deadlock also.
im pretty sure once a world gets to certain size this bug becomes much more noticable. at start it would happen maybe 1/10 times now its every time i enter nether. sometimes when i join it locks too
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i did post a link to the world save LOL. how did u miss it? not enough information. i thought it was very detailed.
Can you provide more details? Does this only happen in one world or does the world not matter? Do you use any datapacks? What server software are you running?