Collectl is rather well described at https://collectl.sourceforge.net. I have only just started playing with it, but it does seem worth looking at.
First question: where do you download it? Nothing at that collectl page will tell you.. you are supposed to just "know" from the SourceForge logo there that you'd go to https://sourceforge.net/projects/collectl to actually get it. Ahh, Linux geeks: don't you just love 'em?
Oh well: I suppose when you live and breath SourceForge it's easy to imagine that everyone must understand that sort of thing. At least the tool itself is packaged as an rpm so you don't have to be particularly geekish to take it for a spin. I downloaded it and installed it on an older 2.4 kernel system I have here - no complaints at all, and worked as advertised (not that I've had time to try every switch yet).
My very first question (after "where do I download it") was "What about sar?". That's covered in the FAQ as the very first question also - how nice for me. One of its major points is that it can plot data.. that's useful.
Worth a peek at least..
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