Search Result: MemoryUsage - DuckDB 2.0 全文検索

Profile and Monitor 9414: Overview The JDBC driver exposes several ways to observe a running or completed query: cancelling and timing out queries, polling query progress, retrieving profiling output, and emitting memory-usage events through Java Flight Recorder . T ... ry Monitoring with JFR On a JFR-capable JVM , the driver can emit Java Flight Recorder events describing DuckDB's internal memory usage, so that any JFR-aware tool — JDK Mission Control, the jfr command line tool, continuous profilers — can ingest DuckDB me ... e, through JMC, or programmatically with the jdk.jfr.Recording API: try (Recording r = new Recording()) { r.enable("duckdb.MemoryUsage").withPeriod(Duration.ofSeconds(1)); r.start(); // ... application work ... r.stop(); r.dump(Path.of("app.jfr")); } The eq ... uivalent .jfc snippet: <event name="duckdb.MemoryUsage"> <setting name="enabled">true</setting> <setting name="period">1 s</setting> </event> When no recording enables the event ...; https://man.mtool.work/duckdb/2.0/clients/java/profiling.html

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