Maximum memory allocation for 32bit linux kernel

Posted by LedZeppelin on Server Fault See other posts from Server Fault or by LedZeppelin
Published on 2011-11-15T05:35:01Z Indexed on 2011/11/15 9:55 UTC
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Filed under:

linux

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ubuntu

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ram

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kernel

I was reading this article that talks about how maximum amount of ram dedicated for kernel usage in 32 bit windows is 2GB even when the total amount of ram is >4GB.

http://www.brianmadden.com/blogs/brianmadden/archive/2004/02/19/the-4gb-windows-memory-limit-what-does-it-really-mean.aspx\

Is this the same for 32bit linux environments like 32-bit ubuntu 10.04? IE is the max kernel allocation 2GB ram even if the total main memory >4GB?
If you increase the total amount of memory to 64GB of ram by recompiling the kernel with the PAE option enabled, what is the maximum amount of ram you can dedicate for kernel usage? Is it still 2GB? Or can you increase it?

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