Avaya DEFINITY Server CSI Maintenance Manual page 1542

Maintenance Objects
Processor Cache Audit (#896)
This nondestructive audit checks the state of the Cache Parity bit maintained by
the RISC CPU. If this bit is set, there may be problems with either the CPU, the
Instruction, or Data Cache. An indication of bad cache parity won't itself mean that
the system won't operate, but minor to severe performance degradation may be
present. For example, a single bad bit in either cache could cause this bit to be
set. If the faulty word is seldom accessed, the impact will be small. If the bit is
accessed frequently, there could be serious problems with much, or all, of the
cache (stuck data bit) with the only direct indication again being the cache parity
error or cache test error.
Table 430. Test #896 Processor Cache Audit
Error Test
Code Result
100 ABORT
2500 ABORT
FAIL
PASS
1542
Issue 5 October 2002
Description/ Recommendation
The test did not complete within the allowable time period.
1. Retry the command.
Internal system error
1. Retry the command.
The Cache Parity Error bit is set, there may be problems with either the
CPU or the Instruction or Data Cache.
1. Retry the command.
2. If the test continues to fail, run test processor a|b long.
3. If the Processor Cache test (#895) or the Processor Cache Audit
(#896) fails, replace the Processor circuit pack.
The Processor has not detected any parity errors in the Instruction and
Data Caches since the last time this audit was run.
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