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- Nothing.
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- Count every cycle.
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- Indicates the number of instructions being completed every cycle
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- RTCSELECT bit transition. 0 = 47, 1 = 51, 2 = 55, 3 = 63 (bits from the time base lower register).
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- Number of instructions dispatched
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- Number of cycles the LSU stalls due to busy MMU
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- Number of cycles the LSU stalls due to the load queue full
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- Number of cycles the LSU stalls due to address collision
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- Number of misaligned loads that are cache hits for both the first and second accesses.
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- Number of instructions written into the store queue
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- Number of cycles that completion stalls for a load instruction
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- Number of hits in the BTAC.
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- Number of times the four basic blocks in the completion buffer from which instructions can be retired were used
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- Number of fetch corrections made at decode stage
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- Number of cycles the dispatch unit stalls due to no unit available.
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- Number of cycles the dispatch unit stalls due to unavailability of GPR rename buffer.
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- Number of cycles the dispatch unit stalls due to no CR rename buffer available.
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- Number of cycles the dispatch unit stalls due to CTR/LR interlock.
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- Number of cycles spent doing instruction table search operations
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- Number of cycles spent doing data table search operations
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- Number of cycles SCIU0 was stalled
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- Number of cycles MCIU was stalled
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- Number of bus cycles after an internal bus request without a qualified bus grant
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- Number of data bus transactions completed with one data bus transaction queued behind
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- Number of write data transactions that have been reordered before a previous read data transaction using the /DBWO feature
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- Number of /ARTRYd processor address bus transactions
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- Number of high-priority snoop pushes.
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- Number of cycles for which exactly one castout buffer is occupied
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- Number of cycles for which exactly three castout buffers are occupied
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- Number of read transactions from load misses brought into the cache in an exclusive (E) state
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- Number of undispatched instructions beyond branch
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