Announcing linStat driver

[Michael Davidsaver via Core-talk <core-talk at aps.anl.gov>]

https://urldefense.us/v3/__https://github.com/mdavidsaver/linStat__;!!G_uCfscf7eWS!adUB5Fv1Li2bt72jSF6MXum-qXgkKSJOuKQcAivFFJAKhSf0NdoDc2CT-xHPEx7c4XQBzq08lzAmjf8-miMGWhsX_g$ 

This linStat driver is something I started last year when I needed
to report file system usage.  It has grown into what I think is a
full super-set of the information exposed by iocStats, although
only for Linux.  Hence the name.  It also requires a recent
compiler with c++17, and Base >= 7.0.4.

So linStat will not be a direct replacement for iocStats.

Where there is overlap with iocStats, I have tried to use the
same record names.

linStat reports more than iocStats can by default.  eg. network
statistics and maximum temperature.  And it can be customized for
a specific host.  eg. disk usage for a mount point, or
status/bandwidth for a specific network interfaces.

Also some values which may or may not turn out to be interesting,
like malloc() pool stats.  Page fault and context switch counters.

At this point I think this module is usable, but I do not yet
consider its interfaces stable.  File name, record names, link
strings, etc. may change.

So I think this driver is ready for adventurous users and
potential contributors who have ideas of what else to add,
or look for.  There is a lot of information hidden away
in "/proc" and "/sys".  eg. I would be interesting to find
disk error counters, or a way to reliably detect fan failures.