Sage905
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I think this issue stopped when we updated our vanilla server to the latest java version, but I'm not 100% sure. To be honest, as soon as bukkit/spigot builds started to become available, we switched to those. We won't run a vanilla server again until the 1.8 release lands. I know that's not very helpful, but alas, we only have so much time...
We updated our Java version, and haven't seen this issue since. Honestly, I didn't take an empirical approach to this, so I don't know if this is what resolved it, but we haven't seen the issue in weeks.
Here's my debug profile... Looks very similar. Lots of time spent in levels->world->tick->regular->tick->unspecified.
Only 12 players on my server at this point in time.
I have also been experiencing this. I made a comment on MC-39037, but that ticket is closed, so I'm repeating here.
Quad-core Xeon processor, with 16GB of RAM. Every once in a while, the 1.7.2 vanilla MC Server process spikes a CPU to 100%, introduces major lag, and sometimes won't even let new players log in. At this point, I usually just restart the server process, and it usually clears it up for a little while. (Though, one time, it immediately got laggy again).
I've seen this happen with 15 players online. I never had this problem with 1.6.4 Bukkit, even loaded to the teeth with plugins on the same server.
There is something amiss. Unfortunately, since all the code is obfuscated, I don't have the inclination to try to reverse-engineer it to figure out what's wrong.
@Tony,
There's a similar ticket that is still open, MC-38160.
I think I'm going to take my data over to that one, since this ticket is closed, and I don't want to feed the trolls.
Ok, folks... I think we're letting this personal pissing match detract from the real issue. The issue, by the way, that I am also experiencing on a server I administer, which is running a Quad-core Xeon processor, with 16GB of RAM. The point is: every once in a while, the 1.7.2 MC Server process spikes the CPU to 100%, introduces major lag, and sometimes won't even let new players log in. At this point, I usually just restart the server process, and it usually clears it up for a little while. (Though, one time, it immediately got laggy again).
I've seen this happen with 15 players online. I never had this problem with 1.6.4 Bukkit, even loaded to the teeth with plugins on the same server.
There is something amiss. Unfortunately, since all the code is obfuscated, I don't have the inclination to try to reverse-engineer it to figure out what's wrong.
Crash when running Minecraft with second monitor attached. Steps:
Attach secondary monitor.
Open Minecraft
Connect to Server
Press E
I can reproduce this at will on my Macbook Pro on the 1.5 client. Please let me know if I can provide any information that will help resolve the issue.
@Warren:
a) You haven't provided any data about your situation (startup parameters, java version, snapshot version, etc.)
b) You're post is not related to the original issue, which is High CPU with 1.7.x versions.
May I suggest that instead of venting your frustrations in this ticket, that you make a post to a community site, ( eg: minecraftforum.net), or one of the IRC help channels: http://minecraft.gamepedia.com/Minecraft_Wiki:IRC. These people can help you troubleshoot, and give you help to gather data that would be useful in creating a ticket of your own.
I understand the cathartic benefit of venting publicly, but it won't help you solve your problem. Which is the goal you want most to achieve?