On Fri 2020-08-07 14:29:09, Jonathan Adams wrote: > [resending to widen the CC lists per rdunlap@xxxxxxxxxxxxx's suggestion > original posting to lkml here: https://lkml.org/lkml/2020/8/5/1009] > > To try to restart the discussion of kernel statistics started by the > statsfs patchsets (https://lkml.org/lkml/2020/5/26/332), I wanted > to share the following set of patches which are Google's 'metricfs' > implementation and some example uses. Google has been using metricfs > internally since 2012 as a way to export various statistics to our > telemetry systems (similar to OpenTelemetry), and we have over 200 > statistics exported on a typical machine. > > These patches have been cleaned up and modernized v.s. the versions > in production; I've included notes under the fold in the patches. > They're based on v5.8-rc6. > > The statistics live under debugfs, in a tree rooted at: > > /sys/kernel/debug/metricfs Is debugfs right place for this? It looks like something where people would expect compatibility guarantees... Pavel --
