Re: What is the performance when using frame pointers in thekernel?

[Jiri Kosina]

On Thu, 3 Dec 2009, Peter Zijlstra wrote:

> > What is the performance hit when the kernel is compiled with frame 
> > pointers?
> 
> build both kernels and run your favourite workload to find out.

But generally speaking, frame pointers impose quite some performance 
penalty indeed. lmbench syscall microbenchmark can give you some hint. I 
expect you'll see approx. 10% performance increase for various syscalls if 
you disable them, as that's what we have measured lately.

-- 
Jiri Kosina
SUSE Labs, Novell Inc.

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