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  • linux-arm
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  • i40e
  • i40e.h
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  • Jesse Brandeburg's avatar
    i40e/i40evf: adjust interrupt throttle less frequently · ee2319cf
    Jesse Brandeburg authored Sep 28, 2015
    
    
    The adaptive ITR (interrupt throttle rate) algorithm was adjusting
    the hardware's interrupt rate too frequently.  This caused a lot
    of variation in the interrupt rate for fairly constant workloads.
    
    Change the code to have a counter and adjust only once every N
    number of interrupts.
    
    Change-ID: I0460f1f86571037484eca5aca36ac4d889cb8389
    Signed-off-by: default avatarJesse Brandeburg <jesse.brandeburg@intel.com>
    Tested-by: default avatarAndrew Bowers <andrewx.bowers@intel.com>
    Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
    ee2319cf