About this tag
On WindowsForum.com, discussions tagged with 'activity spikes' focus on abnormal CPU usage bursts that degrade system performance. Users report erratic mouse behavior, high System Interrupts and DPCs, and core utilization spikes reaching 75-80%. Troubleshooting often involves USB port changes, driver updates, and hardware checks. The tag covers performance monitoring and diagnosing interrupt-related CPU spikes in Windows systems.
  1. seekermeister

    Windows 7 System Interrupts And DPCs

    I've tracked a problem that only began since a recent clean install of the OS, in which the mouse cursor intermittently becomes erratic. When this does happen, the CPU becomes abnormally active, with spikes to about 30%, with the last 3 cores out of 6 going as high as 75-80%. The Performance...
    • seekermeister
    • Thread
    • activity spikes clean install cpu performance cursor dpc hardware issues logitech performance monitoring system interrupts usb
    • Replies: 11
    • Forum: Windows Help and Support