> While I was profiling CGAL4.4 Spatial searching with callgrind,
> I found that some function takes more than 100% of instruction. :(
> I compiled CGAL with -g and -O0 options.
> 
> Is this common for other applications?

No.

> Any idea??

Tell us which version of callgrind.
Tell us the name of the hardware architecture and operating system and runtime 
library.
Tell us the name of the function, and the actual counts which seem bad.
Is there only one function with bad counts?
Is it directly recursive (calls itself)?
Is it indirectly recursive (is in a recursive loop of multiple functions)?




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