Language Selection

English French German Italian Portuguese Spanish

Linux Kernel Recompilation: Is it Worth the Pain?

Filed under
Linux

With Linux Kernel 2.6.32 around the corners I see some guru's suggesting users to recompile their own kernels for a dozen of reasons: performance, fast booting, support of some esoteric drivers, bla... bla... What's more, the way some persuade for kernel recompilation seems the job is as easy as any point-n-click installation.

Dear users, kernel recompilation is not easy like that. Plus, you won't get that perceivable performance boost. May be after hours of toil you can cut down 2 secs from your boot time and some unnoticeable system responsiveness.

Except for some really weird situations, modern Linux distributions don't really need kernel recompilation.

Here are the reasons:




More in Tux Machines

Leftovers: Gaming

Leftovers: Software

today's howtos

ACPI, kernels and contracts with firmware

This ends up being a pain in the neck in the x86 world, but it could be much worse. Way back in 2008 I wrote something about why the Linux kernel reports itself to firmware as "Windows" but refuses to identify itself as Linux. The short version is that "Linux" doesn't actually identify the behaviour of the kernel in a meaningful way. "Linux" doesn't tell you whether the kernel can deal with buffers being passed when the spec says it should be a package. "Linux" doesn't tell you whether the OS knows how to deal with an HPET. "Linux" doesn't tell you whether the OS can reinitialise graphics hardware. Read more