Mark Gregory
a189d21af9
Previously, the progress bar updated only after completing an entire table. For large tables such as LIBARC, this could make the application appear to have stopped responding. Phase 10 updates the interface while rows are being exported.
1.3 KiB
1.3 KiB
Phase 16 — Native MySQL Diagnostics
Adds five read-only Administration → Performance screens:
- Slow Query Analysis:
performance_schema.events_statements_summary_by_digestsorted by cumulative execution time, with counts, rows examined, and first/last seen timestamps. Times are raw picoseconds, not milliseconds. - Table I/O Hotspots:
performance_schema.table_io_waits_summary_by_tablewith read/write counts and timings. - InnoDB Metrics: selected
SHOW GLOBAL STATUSbuffer-pool, I/O, lock, and row counters. - InnoDB Lock Waits: current edges in
performance_schema.data_lock_waits. - Connection Statistics: connection, abort, thread, and query counters.
All screens reuse the existing searchable grid, manual refresh, and optional five-second auto-refresh. SQL is read-only. Some screens require MySQL 8.0+ and enabled Performance Schema instrumentation/privileges; errors are displayed in the existing administration error view. The digest and table I/O summaries are cumulative and may be reset by server restarts or instrumentation changes. This phase does not enable slow-query logging or change server configuration.
Validation
Source inspection and ZIP integrity check performed. Not compiled with Xcode or tested on a live MySQL server. Test on a nonproduction MySQL 8.0+ instance first.