W dniu 19.05.2022 o 22:26, Marc Chamberlin pisze:
Hi - I have a number of openSuSE 15.3 x64 that periodically experience bad sluggishness in responding to keyboard or mouse input. This can get frustrating with delays up to a minute or so after clicking on a button, or typing in a window. This occurs across all applications/windows open on a KDE desktop. Ksysguard aka System Monitor, nor top, do not show my why these slowdowns occur. I monitor CPU %, I/O Reads/Writes, Network activity and don't see anything indicating abnormal consumption of time. So given the fact that I am NOT a guru on Linux systems, what else can I do to try and track down (and hopefully fix or find a solution to) what is going on with my computers. What strategy(s) should I follow and what other tools might be helpful? Thanks for any advice/help in advance....
Marc....
There is one thing those monitoring tools doesn't show by default: disk IO. You can try this: - install htop - run it as root ("sudo htop"), because some IO metrics are not available for regular users - go to setup (F2) - in "Display options" - disable "Hide kernel threads" - enable "Hide userland process threads" - enable "Detailed CPU time (System/IO-Wait/..." - in "Columns" add "IO_READ_RATE", "IO_WRITE_RATE" and "IO_RATE" (I usually put them between PERCENT_MEM and TIME) (TIL: on Tumbleweed newer version of htop has a feature called "screens" and you just need to press "tab" to switch to a view with IO related columns) - go back to main view and sort by IO rate This _might_ help.