<!DOCTYPE html><html><head><title></title><style type="text/css">p.MsoNormal,p.MsoNoSpacing{margin:0}</style></head><body><div>If we're talking TSDBs and monitoring, I have to mention <a href="https://prometheus.io/">https://prometheus.io/</a><br></div><div><br></div><div>There are plenty of exporters (components that expose metrics). node_exporter does everything mentioned in this thread so far, and <a href="https://github.com/cloudflare/psi_exporter">https://github.com/cloudflare/psi_exporter</a> is of interest for PSI specifically.<br></div><div><br></div><div>On Wed, 23 Oct 2024, at 17:53, James Dutton via GLLUG wrote:<br></div><blockquote type="cite" id="qt" style=""><div>On Wed, 23 Oct 2024 at 17:03, Adam Monsen via GLLUG<br></div><div><<a href="mailto:gllug@mailman.lug.org.uk">gllug@mailman.lug.org.uk</a>> wrote:<br></div><div><br></div><div>> Have you heard of PSI (Pressure Stall Information) -- <a href="https://docs.kernel.org/accounting/psi.html">https://docs.kernel.org/accounting/psi.html</a> ? It's another "trailing indicator" (not a "leading indicator") but maybe that approaches something like one or a few useful longitudinal metrics in the manner you're seeking.<br></div><div><br></div><div>Just to add a bit to Adam's email. Longitudinal metrics can also be<br></div><div>referred to time-series data. So one might use time series databases<br></div><div>to store them, such as influxdb. <a href="https://www.influxdata.com/">https://www.influxdata.com/</a><br></div><div><br></div><div>-- <br></div><div>GLLUG mailing list<br></div><div><a href="mailto:GLLUG@mailman.lug.org.uk">GLLUG@mailman.lug.org.uk</a><br></div><div><a href="https://mailman.lug.org.uk/mailman/listinfo/gllug">https://mailman.lug.org.uk/mailman/listinfo/gllug</a><br></div><div><br></div></blockquote><div><br></div></body></html>