Published at LXer:
As has been well publicized by now, the Linux kernel lacks the sort of tracing features which can be found in certain other Unix-like kernels. That gap is not the result of a want of trying. In the past, developers trying to put tracing infrastructure into the kernel have often run into a number of challenges, including opposition from their colleagues who do not see the value of that infrastructure and resent its perceived overhead. More recently, it would seem that the increased interest in tracing has helped developers to overcome some of those objections; an ongoing discussion shows, though, that concerns about tracing are still alive and have the potential to derail the addition of tracing facilities to the kernel.
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