Sun Fire 3800/4800/4810/6800 With Firmware 5.15.0 or 5.15.1 May Encounter Performance Degradation

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Impact

Sun Fire domains with specific configurations may encounter performance degradation.

Contributing Factors

This issue can occur in the following releases

SPARC Platform

• Sun Fire 3800/4800/4810/6800 with firmware 5.15.0 (patch 112884-01)
• Sun Fire 3800/4800/4810/6800 with firmware 5.15.1 (patch 112884-02)

The described issue is likely to occur if a domain is utilizing firmware 5.15.0 or 5.15.1 and configured in any of the combinations below:

• 900Mhz CPUs with a 2.2 CPU mask
• 900Mhz or 1050Mhz CPUs with a 2.3 CPU mask
• A combination of 2.2 and 2.3 CPU mask CPUs in a domain

To identify the current System Controller firmware version, use the "showsc -v"command from the platform shell.

To identify the CPU mask of a CPU, please see the "cpu_mask" in the "showboards -v -p cpu" command output (from the platform shell).

Note: Domains will not be affected by running these commands.

Symptoms

Should the described issue occur, the system encounters a performance degradation.

Workaround

There is no workaround. Please see the "Resolution" section below.

Resolution

This issue is addressed in the following releases:

SPARC Platform

• Sun Fire 3800/4800/4810/6800 with firmware 5.15.2 (as delivered in patch 112884-03) or later

Modification History




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