Unable to allocate all of the memory I have

[BoaConstructor]

Hello,

I would like to dedicate 3 or more GB of RAM to Tekkit, but I only get the option for 512MB, 1GB and 1536MB (2GB).

Screenshot: https://www.dropbox.com/s/iq6jz3m8b47wdly/javaw%202013-01-30%2008-39-19-20.bmp

The reason I want to use more RAM is that Tekkit always freezes and I have to force-quit it.

If I try to launch Minecraft with Magic Launcher and I put in the custom amount of RAM, it can't initiate the Java VM for some reason. I'm assuming that this issue has to do with Java, not my hardware, because I have 3GB of RAM on the laptop I am using. I also have an iMac with 4GB of RAM and the same processor as my laptop and the Java VM on there is able to go up to 16GB of RAM. But, that computer does have a 1 Terabyte HDD and my laptop has a tiny 80GB. Still, I should be able to use all 3GB of my RAM on my laptop. Is there any way to allocate all of my RAM to Tekkit? Or at least prevent it from crashing all the time.

Thanks!

[nedned2k]

Short answer: no

Long answer: You shouldn't dedicate all of your RAM to minecraft, as it won't help, and will likely just hurt you more. You only have a certain amount of RAM (in this case 3GB), and basically, you use RAM to run your computer. You need a chunk to run the operating system, games, internet browsers, you name it. If all your RAM is allocated to your minecraft, it's not going to be available for use on anything else, and you really shouldn't need more than a gigabyte allocated to run tekkit. The reason it's freezing up (unless it specifically says "ran out of memory") is likely nothing to do with RAM. Also, the reason your iMac's options for RAM allocation can go up to 16GB is likely because the java on that is 64-bit, as opposed to 32-bit, though I could be wrong on that. As for preventing it from crashing, you could try to set all the graphics options to the lowest possible (if you havn't already). If it continues crashing, you can just time it, and manually restart the client before it crashes, so getting back into the game will take less time.

[BLAZE MkIV]

Better answer, get the crash log and search for any bugs reported that match. After searching if you don't find one enter a bug report in the bug forum.

[BoaConstructor]

I'm aware of what RAM is, but thanks for the accurate explanation. I've already set my graphics settings to the lowest and I haven't had any results. You could be right about the 32-bit 64-bit java difference. I completely forgot that my iMac is 64-bit. I'll just fix it myself, manually.

Short answer: no

Long answer: You shouldn't dedicate all of your RAM to minecraft, as it won't help, and will likely just hurt you more. You only have a certain amount of RAM (in this case 3GB), and basically, you use RAM to run your computer. You need a chunk to run the operating system, games, internet browsers, you name it. If all your RAM is allocated to your minecraft, it's not going to be available for use on anything else, and you really shouldn't need more than a gigabyte allocated to run tekkit. The reason it's freezing up (unless it specifically says "ran out of memory") is likely nothing to do with RAM. Also, the reason your iMac's options for RAM allocation can go up to 16GB is likely because the java on that is 64-bit, as opposed to 32-bit, though I could be wrong on that. As for preventing it from crashing, you could try to set all the graphics options to the lowest possible (if you havn't already). If it continues crashing, you can just time it, and manually restart the client before it crashes, so getting back into the game will take less time.