Huge interrupt overhead reported after RAM added to Atom-based system

John Levine johnl at
Sun Sep 4 05:51:08 UTC 2011

>I'd like to experiment with having FreeBSD try to use less than the 
>full 4 GB (e.g., to make it act as if memory ended at, say, 3 GB) 
>but I'm not sure how to tell the kernel to do that.

In /boot/loader.conf set "hw.physmem" to whatever size you want it to use.

"man loader" for more info


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