Minecraft Forums

Quote from ragger

-snip-

MagicMinecraftLauncher 0.8.7
Exception in thread "main" java.lang.NoClassDefFoundError: aiw
    at java.lang.Class.getDeclaredMethods0(Native Method)
    at java.lang.Class.privateGetDeclaredMethods(Unknown Source)
    at java.lang.Class.getDeclaredMethod(Unknown Source)
    at magic.launcher.Launcher.a(Unknown Source)
    at magic.launcher.Launcher.main(Unknown Source)
Caused by: java.lang.ClassNotFoundException: aiw
    at java.net.URLClassLoader$1.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    ... 5 more

Quote from PhothreeniX

Originally, I was going to take the time to do a proper benchmark of all the versions vs default with my hardware. But, I realized its mostly irrelevant considering I maintain three digit numbers in FPS, regardless of mods.

So for kicks I did a comparison of overkill :smile.gif:
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Quote from epic_wtf

Since on the last few pages, there are some people wondering why the CMD file in the “Tips and tricks” section doesn't allow you to log in and thus preventing you from playing multiplayer. For this reason, sp614x, can you please change it to this:



I think this would cause less confusion, because this command starts minecraft with the regular login page and you can play multiplayer with less used memory and less lag.

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Slight OT:
For those of you who love to play around with your computer and program settings, I want to show you how I start minecraft. This CMD file works best with new computers with recent multi-core CPUs.

"C:\Program Files\Java\jre7\bin\java.exe" -server -Xmx256m -Xnoclassgc -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:-DisableExplicitGC -XX:+UseThreadPriorities -XX:+UseFastAccessorMethods -XX:+UseBiasedLocking -XX:+UseStringCache -XX:+UseCompressedOops -XX:+OptimizeStringConcat -XX:+TieredCompilation -XX:+AggressiveOpts -XX:UseSSE=4 -cp "full path of your Minecraft.exe" net.minecraft.LauncherFrame

Together with Optifine MT and the latest 64-bit Java 7, minecraft runs fast and completely smooth. I will try to explain some of the options (poorly :biggrin.gif: ):

-server

Starts minecraft with the Server VM. On 64-bit JRE, the Server VM is the only available mode. So in this case, this switch does nothing. But on 32-bit JRE, there is also a Client VM. The Server VM is usually faster than the Client VM.

-Xnoclassgc

Please be careful with this switch. This disables class garbage collection. With Optifine it works fine. But if you have other mods this can potentially cause a “OutOfMemoryError”. If you encounter the error, remove this switch and try if minecraft runs better.

-XX:+UnlockExperimentalVMOptions -XX:+UseG1GC

This activates the new Garbage-first GC. It should replace the concurrent mark-sweep GC sometime. It works best on multi-core CPUs and it can reduce lags caused by garbage colletion. Although the G1GC is quite new, I haven't face any problems yet, so you should give it a try.

-XX:-DisableExplicitGC

It deactivates the explicit GC calls. I don't know if minecraft or any mods use this. But it's recommended to deactivate it anyway because it reduce the performance. Java know when to do a garbage collection, you usually shouldn't tell Java when to do it.

-XX:UseSSE=4

It's obvious what it does. Try to find out which SSE version do your processor support. A great tool for this is CPU-Z. When you figure it out, please replace "4" with the applicable number.

It would be great if you try this CMD out. (At least for the lulz :biggrin.gif: ) And please report back how your minecraft performes.

Quote from pwnedgod

I use chrome but it still gives me a lot of memory use. But just terminate those unneeded application.

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Also sp614x. Have you fixed the modloader handheld item bug in the AA Version of OptiFine?