Talk:Linux CPU utilization

From Rosetta Code

I think this task is pretty much ready to go... but as its the first task I've added to Rosetta Code, I'd like to get someone to review it first :) --Paul (talk) 09:49, 27 May 2015 (UTC)

OS specific task[edit]

I don't think OS specific tasks are a good idea. Does this really need to be OS specific?

For starters, /proc is not unique to Linux, although other OSes may provide other/better ways to get similar information (e.g. getloadavg(3)).

Some programming languages may provide OS agnostic routines/libraries to get similar information (which would be superior to grepping around in /proc/stat IMO). —dchapes (talk | contribs) 13:35, 27 May 2015‎ (UTC)

Actually, it's probably better to have something like this be OS-specific. I've seen plenty of other tasks which are written in a way which implies they are OS-agnostic but where the difficulty of implementation is trivial for implementations which assume a specific OS context and near to implement portably without such assumptions. It'll never be perfect. And this one seems simple enough.
That said, this one can be a pain if you don't have access to a linux implementation of your language. You can approximate, though, by using a surrogate file (representing /proc/stat) and code against that (changing it between reads). --Rdm (talk) 16:04, 27 May 2015 (UTC)
I fired up virtualbox with an Ubuntu image to create the Python version. --Paddy3118 (talk) 16:59, 27 May 2015 (UTC)
It's easy for you to say (using a surrogate file), but I don't have access to a Linux system.   But if somebody would include such a (sample) file here, it would be a snap to code this Rosetta Code task in REXX.   -- Gerard Schildberger (talk) 00:10, 21 July 2016 (UTC)