This article aims to help users implement services to actively monitor, log, and report hardware errors. A machine check exception (MCE) is an error generated by the CPU when the CPU detects that a hardware error or failure has occurred.
Machine check exceptions (MCEs) can occur for a variety of reasons ranging from undesired or out-of-spec voltages from the power supply, from cosmic radiation flipping bits in memory DIMMs, or from other miscellaneous faults, including faulty software triggering hardware errors.
The mcelog daemon written by Andi Kleen is one of the tools one can use to gather MCE information.
mcelog's configuration file is located at Template:Filename.
Running mcelog as a daemon
Additional configuration options
The following option is probably recommended:
syslog = yes
Hardware documentation from CPU manufacturers
- AMD64 Architecture Programmer's Manual, Volume 2: System Programming
- BIOS and Kernel Developer's Guide for AMD Athlon™ 64 and AMD Opteron™ Processors