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I noticed that my processors were, in total, in use only about 50% of the time while making a Linux kernel.

I usually make the kernel, then make the modules.

I have just started a make bzImage in one terminal and a make modules in another and see that both my processors are in full use. I expect the total compile time will be a lot quicker as I'm compiling in parallel instead of serial.

Are there any "gotya's" that make this unsafe?

Stacey Richards
  • 324

2 Answers2

6

Just use make -j 3 and it should compile in paralell, and will ensure any dependencies are properly handeled, this is the "official" way to do it.

LapTop006
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And no, you should not start building two objects in the same directory that are likely to try and compile the same code at the same time.

wzzrd
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