MySQL 5.4 Reference Manual :: 5 MySQL Server Administration :: 5.7 Tracing mysqld Using DTrace :: 5.7.1 mysqld DTrace Probe Reference :: 5.7.1.9 Index Probes
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- 5.7.1 mysqld DTrace Probe Reference
- 5.7.1.1 Connection Probes
- 5.7.1.2 Command Probes
- 5.7.1.3 Query Probes
- 5.7.1.4 Query Parsing Probes
- 5.7.1.5 Query Cache Probes
- 5.7.1.6 Query Execution Probes
- 5.7.1.7 Row-Level Probes
- 5.7.1.8 Read Row Probes
- 5.7.1.9 Index Probes
- 5.7.1.10 Lock Probes
- 5.7.1.11 Filesort Probes
- 5.7.1.12 Statement Probes
- 5.7.1.13 Network Probes
- 5.7.1.14 Keycache Probes
The index probes are triggered each time a a row is read using one of the indexes for the specified table. The probe is triggered within the corresponding storage engine for the table.
index-read-row-start(database, table) index-read-row-done(status)
index-read-row-start— triggered when a row is read by the storage engine from the specifieddatabaseandtable.index-read-row-done— triggerd when an indexed row read operation within a storage engine completes. Thestatusreturns 0 on success, or a positive value on failure.
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