I'm guessing you meant "sys-proctable". It depends on the platform. On MS Windows it _is_ pure Ruby. Other platforms store binary data in /proc, or may not have /proc mounted in the first place.
The only platform where I _could_ have used pure Ruby but chose C was Linux. I did that for speed. We needed it for an app for work, and speed was a factor.
Is the fact that it's in C an issue?
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RE: Why does sys-proctool invoke a C compiler [ reply ]