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    system.asynchronous_metrics

    包含在后台定期计算的指标。 例如，在使用的RAM量。

    • () — 指标名。
    • value (Float64) — 指标值。

    示例

    1. ┌─metric──────────────────────────────────┬──────value─┐
    2. │ jemalloc.background_thread.run_interval │          0 │
    4. │ jemalloc.retained                       │  422551552 │
    5. │ jemalloc.mapped                         │ 1682989056 │
    6. │ jemalloc.resident                       │ 1656446976 │
    8. │ UncompressedCacheCells                  │          0 │
    9. │ MarkCacheFiles                          │          0 │
    10. └─────────────────────────────────────────┴────────────┘