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FusionServer Pro Rack Server iBMC Alarm Handling 30

This document describes iBMC alarms in terms of the meaning, impact on the system, possible causes, and handling suggestions.
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ALM-0x00000083 Insufficient PCIe MMIO Resources (CPU, Critical Alarm)

ALM-0x00000083 Insufficient PCIe MMIO Resources (CPU, Critical Alarm)


Alarm message:

The PCIe MMIO configuration space in CPU arg1 is insufficient (SN: arg2, PN: arg3).

From iBMC V316, the CPU and disk alarms will also include the SN and part umber and the mainboard and memory alarms will also include the part number.

This alarm is generated when insufficient PCIe memory-mapped I/O (MMIO) resources are detected for the CPU.

Alarm object: CPU


Alarm ID Alarm Severity Auto Clear





Name Meaning


Socket No. of the CPU.


CPU serial number.


Part number.

Impact on the System

Some PCIe cards are affected.

Possible Causes

The total I/O resources required by the PCIe cards connected to the CPU exceeds the maximum I/O resources provided by the CPU.


  1. Check whether the PCIe cards comply with the server installation guidelines.

    For details about the PCIe card installation guidelines, see the user guide of the server you use.

    • If yes, go to 3.

    • If no, go to 2.

  2. Power off the server and install the PCIe cards according to the installation guidelines. After the server is powered on, check whether the alarm is cleared.

    • If yes, no further action is required.

    • If no, go to 3.

  3. Contact Huawei technical support.
Updated: 2019-08-05

Document ID: EDOC1000054724

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