Online Diagnostics - Silicon Graphics Tezro Hardware User's Manual

4: Troubleshooting and Diagnostics

Online Diagnostics

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Caution: The runalldiags script should be run while the system is idle. If you run the
online diagnostics while the system is in use, data may be lost.
Online diagnostics are tests that verify system hardware while the operating system is
running. When you run the online diagnostics from the IRIX operating system prompt,
each diagnostic runs a set of tests for a certain number of loops. The online diagnostics
test the following areas of the system:
• CPU
• Memory
• I/O
• Graphics
• Storage devices
• Network devices
The online diagnostics also run a system stress test, which tests all areas of the system
under heavy load.
The runalldiags script automatically runs a sequence of online diagnostics. It runs in
three modes:
• Basic mode verifies memory and performs 30 minutes of stress testing. (If you want
to perform regularly scheduled testing, use basic mode.)
• Normal mode performs the same tests as basic mode and also performs I/O testing.
(The I/O testing may disrupt any serial port and USB devices.)
• Extensive mode performs more disruptive I/O testing. (Ethernet is unavailable, and
USB operations are disrupted.) It also performs more intensive CPU, memory, and
stress testing. Use this mode only if you suspect there is a problem with the system.
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