David Christensen wrote: > On 6/2/26 07:02, Stefan Monnier wrote: > > > I've seen too many hard-to-diagnose problems that disappeared after > > > replacing a sketchy PSU. Random hangs and crashes, hard drive errors, > > > video > > > noise, hang on reboot, etc. I no longer try to go cheap when choosing a > > > PSU > > > for builds. > > > > Yeah, I'm actually surprised the hardware hasn't caught on accordingly: > > while it's now standard for chips to monitor their temperature (and > > adjust their power consumption if it gets too high), I still haven't > > seen anything comparable that would detect and report when the input > > voltage goes out-of-range (and maybe also take steps to reduce the > > instantaneous power consumption?). > > > https://en.wikipedia.org/wiki/Lm_sensors > > lm_sensors (Linux-monitoring sensors) is a free open-source software-tool > for Linux that provides tools and drivers for monitoring temperatures, > voltage, humidity, and fans. It can also detect chassis intrusions.
Almost all of those sensors are on the motherboard or on attached cards; you'll frequently get to see voltages from the CPU, but hardly ever does a power supply tell you about its load. If you plug in a UPS, most (but not all) can give you information about the wall outlet power and how much is currently being drawn by the machines attached to the UPS. -dsr-
