Hi, One thing that I find inconvenient with standard open suse kernels is that the function tracing support is disabled (CONFIG_FUNCTION_TRACER). I know it's in the tracing kernel, but that has a lot of stuff that is really slow. It's incredibly useful to quickly debug or analyze things without recompiling. I know the thing had significant overhead in the old days, but since dynamic mcount patching was added the overhead should be fairly low (<1-2%) when disabled. Any chance to enable it by default? I also noticed that some ftrace features should be also cheap are also disabled like CONFIG_TRACER_SNAPSHOT. And it's not clear why block trace is disabled too, it should be also practically free when disabled. But at least the function tracer would be nice. -Andi -- To unsubscribe, e-mail: opensuse-kernel+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-kernel+owner@opensuse.org