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Shows the number of different IRQs received by the kernel. High disk or network traffic can cause a high number of interrupts (with good hardware and drivers this will be less so). Sudden high interrupt activity with no associated higher system activity is not normal.

Field Internal name Type Warn Crit Info
EXT iEXT derive      
AIO iAIO derive      
[EXT] Clock Comparator iCLK derive     Interrupt CLK, for device(s): [EXT] Clock Comparator
[EXT] External Call iEXC derive     Interrupt EXC, for device(s): [EXT] External Call
[EXT] Emergency Signal iEMS derive     Interrupt EMS, for device(s): [EXT] Emergency Signal
[EXT] CPU Timer iTMR derive     Interrupt TMR, for device(s): [EXT] CPU Timer
[EXT] Timing Alert iTAL derive     Interrupt TAL, for device(s): [EXT] Timing Alert
[EXT] Pseudo Page Fault iPFL derive     Interrupt PFL, for device(s): [EXT] Pseudo Page Fault
[EXT] DASD Diag iDSD derive     Interrupt DSD, for device(s): [EXT] DASD Diag
[EXT] Virtio iVRT derive     Interrupt VRT, for device(s): [EXT] Virtio
[EXT] Service Call iSCP derive     Interrupt SCP, for device(s): [EXT] Service Call
[EXT] IUCV iIUC derive     Interrupt IUC, for device(s): [EXT] IUCV
[EXT] CPU-Measurement: Sampling iCMS derive     Interrupt CMS, for device(s): [EXT] CPU-Measurement: Sampling
[EXT] CPU-Measurement: Counter iCMC derive     Interrupt CMC, for device(s): [EXT] CPU-Measurement: Counter
[EXT] HMC FTP Service iFTP derive     Interrupt FTP, for device(s): [EXT] HMC FTP Service
[I/O] Common I/O Layer Interrupt iCIO derive     Interrupt CIO, for device(s): [I/O] Common I/O Layer Interrupt
[I/O] DASD iDAS derive     Interrupt DAS, for device(s): [I/O] DASD
[I/O] 3215 iC15 derive     Interrupt C15, for device(s): [I/O] 3215
[I/O] 3270 iC70 derive     Interrupt C70, for device(s): [I/O] 3270
[I/O] Tape iTAP derive     Interrupt TAP, for device(s): [I/O] Tape
[I/O] Unit Record Devices iVMR derive     Interrupt VMR, for device(s): [I/O] Unit Record Devices
[I/O] LCS iLCS derive     Interrupt LCS, for device(s): [I/O] LCS
[I/O] CTC iCTC derive     Interrupt CTC, for device(s): [I/O] CTC
[I/O] EADM Subchannel iADM derive     Interrupt ADM, for device(s): [I/O] EADM Subchannel
[I/O] CHSC Subchannel iCSC derive     Interrupt CSC, for device(s): [I/O] CHSC Subchannel
[I/O] Virtual I/O Devices iVIR derive     Interrupt VIR, for device(s): [I/O] Virtual I/O Devices
[AIO] QDIO Adapter Interrupt iQAI derive     Interrupt QAI, for device(s): [AIO] QDIO Adapter Interrupt
[AIO] AP Bus iAPB derive     Interrupt APB, for device(s): [AIO] AP Bus
[AIO] PCI Floating Interrupt iPCF derive     Interrupt PCF, for device(s): [AIO] PCI Floating Interrupt
[AIO] PCI Directed Interrupt iPCD derive     Interrupt PCD, for device(s): [AIO] PCI Directed Interrupt
[AIO] MSI Interrupt iMSI derive     Interrupt MSI, for device(s): [AIO] MSI Interrupt
[AIO] Virtual I/O Devices AI iVAI derive     Interrupt VAI, for device(s): [AIO] Virtual I/O Devices AI
[AIO] GIB Alert iGAL derive     Interrupt GAL, for device(s): [AIO] GIB Alert
[NMI] Machine Check iNMI derive     Interrupt NMI, for device(s): [NMI] Machine Check
[CPU] CPU Restart iRST derive     Interrupt RST, for device(s): [CPU] CPU Restart
I/O iI_O derive