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    I don't think you should see "remarkable slowdown" when you are doing tasks like editing code. I'd investigate to make sure something else isn't causing issues and the KPTI patch just a coincidence.
    – mattdm
    Commented Jan 8, 2018 at 22:51
  • I would bet that your "remarkable slowdown" is caused solely by running out of RAM. Try to kill some processes to increase the amount of "MemAvailable" RAM in /proc/meminfo and you should see improved performance. Note that the "MemAvailable" includes all caches and buffers so if you're running low, the system has to deal with lower cache and buffer sizes and the performance will suffer. Commented Oct 1, 2018 at 7:07