Changed motherboard, Same NICs, Interrupt CPU went up


  • LAYER 8 Netgate

    I just changed from a Jetway D510 to a Jetway JBC200F96 D525.  I moved the same 3xIntel GigE daughtercard from the old machine to the new.  My interrupt CPU has gone from effectively zero to about 20%.  Both 2.1.4.  Backed up and restored the config to the new machine.

    Any thoughts?
    ![Screen Shot 2014-08-08 at 3.57.28 AM.png](/public/imported_attachments/1/Screen Shot 2014-08-08 at 3.57.28 AM.png)
    ![Screen Shot 2014-08-08 at 3.57.28 AM.png_thumb](/public/imported_attachments/1/Screen Shot 2014-08-08 at 3.57.28 AM.png_thumb)


  • LAYER 8 Netgate

    
    root(5): vmstat -i
    interrupt                          total       rate
    irq1: atkbd0                           6          0
    irq7: ppc0                     285286776      79026
    irq16: em2 uhci0                 1238723        343
    irq18: em0 ehci0++                902210        249
    cpu0: timer                      7189279       1991
    cpu1: timer                      7188851       1991
    cpu3: timer                      7188860       1991
    cpu2: timer                      7188857       1991
    Total                          316183562      87585
    
    

    Got into the BIOS and disabled the parallel port.  All better.


  • Netgate Administrator

    Your parallel port, ppc0, is doing something. I doubt you're using it so try just disabling it in the BIOS.

    Steve


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