Stuart Thorpe

Hit this issue on my snapshot server too, Crashes when someone enters the end. rolled back to pre-8 no problems found.

Thank you for the information, it looks like it's the custom settings for how big to open the minecraft screen. If I turn it off in the launcher, Minecraft loads, if I turn it on and put in some values then it crashs.

Launcher Logs now attached.

Logs attached.

I don't think it's a dup of that issue because the entities never disappeared until I went to week 32 snapshots.. week 31 I had no problems.

Just some follow up on additional testing.

1) This is still an issue with Pre release 3
2) I have found that cpu calms down if everyone goes to the nether or to the end, meaning the CPU will go to about 60% usage. But as soon as one person goes to the overworld cpu goes right back to 230 to 260% cpu usage again.

I have tried a number of things such as deleting the level.dat etc.. but nothing has worked.

As there have been no updates by Mojang about this, I fear my only option is to dump our world and start a new world as I see no lag if I generate a new world in 1.8. Meaning this only seems to happen with worlds generated before 1.8 snapshots.

Hopefully this additional information will help.

So... I can't run a server anymore? I've never had cpu maxing like this, so finding it hard to believe this is working as intended..

Thank you, so this is default 'On' then? as I've never gone into the multiplayers settings I know I didn't turn it off.

How do I enable it then I am the admin I didn't see any settings in server.properties to turn this on or off.

I also can't turn this on or off in single player.

I'm not talking about general lag, my bug was closed as a dup of this bug. Previous comments have pointed out it is all mob tracking. People pick on zombies because there tracking range was increased in 1.6 so then this issue really became noticeable.

as I said the lag only hits when night comes and the mobs come out in force.. If I force an always day mod on, I never see any issues on my server cpu, if I allow night then I can see the cpu still spike from time to time (it was always maxed at 100% in 1.6).

This is still a problem, it's not as bad as 1.6, but if you running a server the more people you have on the server the more you'll notice the lag, mainly at night. During day can still be a problem if people are in areas with crazy cave systems like the ones found in extreme hills.

I still see block lag, and even jittery skies from time to time.

it's more playable than in 1.6 days, but it's still an issue in 1.7.2

So I've found a way to sorta control the CPU a bit better, it's using the /gamerule command to just make it always day. The CPU is still higher than normal, but it's more manageable and I get fewer complaints from the players on my server. We don't have nightfall for now, but it's a trade off we've agreed is better than the CPU being 100%.

/gamerule doDaylightCycle false
/time set 6000 (I think that's the one for mid day).

At least on my server night time is when the CPU uses up all the cores on my server and I'm completely at 100% CPU usage. Doing the always day thing I'm still in the 80% to 100% mark for 1 core, but rarely goes into other cores.