I have an acer Travelmate 8481, from last year. It has 4gig of RAM, a 32bit operating system (Windows 7 Enterprise), it runs off an Intel i5 CPU, Intel graphics 3000 and it has a SSD for the windows booting files which is where my minecraft runs, with a HDD for storage. I am on 1.5.2, using magiclauncher (1.1.4) to set the amount of RAM dedicated and to manage my .jars. I'm using java 7, version 1.7.0_21.
I'm using magic launcher to set the RAM dedicated to 128mb, since I find that less RAM dedicated gives me better FPS. But I have been having an issue with my computer freezing up due to memory shortages when having two minecraft instances going, and after a bit of investigating I found that each instance uses upwards of 400mb's (It goes up to around 900mb's), regardless of mods used in each instance. However, the maximum I set it to use was 128mb, and f3 shows around 80-100 being used.
(Pic to show what I mean: http://prntscr.com/19wxfg)
Anyone know why it is doing this or how I can fix it?
Thanks.
F3 shows, and you can only control, how much Java heap you are using for Minecraft.
The process needs more memory than that to run. There's the JVM program, stack, and heap, the Minecraft Jars, the Minecraft stack, and then whatever native memory your drivers (video & audio) allocate. Typically the Process size is up to around 700M larger as a result.
Not really, no. You can limit the heap, but not other things. For most programs you can't control any of that anyway. But java, because it creates a 'virtual machine' allows you to control how much memory the 'virtual' part has. Which is both good and bad. You can limit it, but if you give it less than it really needs, then you get those OutOfMemory heap exceptions, even though your computer may still have plenty of memory, because the 'virtual' computer has run out.
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I'm using magic launcher to set the RAM dedicated to 128mb, since I find that less RAM dedicated gives me better FPS. But I have been having an issue with my computer freezing up due to memory shortages when having two minecraft instances going, and after a bit of investigating I found that each instance uses upwards of 400mb's (It goes up to around 900mb's), regardless of mods used in each instance. However, the maximum I set it to use was 128mb, and f3 shows around 80-100 being used.
(Pic to show what I mean: http://prntscr.com/19wxfg)
Anyone know why it is doing this or how I can fix it?
Thanks.
The process needs more memory than that to run. There's the JVM program, stack, and heap, the Minecraft Jars, the Minecraft stack, and then whatever native memory your drivers (video & audio) allocate. Typically the Process size is up to around 700M larger as a result.