Examples with PageCursorTracer org.neo4j.io.pagecache.tracing.cursor.PageCursorTracer used on opensource projects

Example 21 with PageCursorTracer

use of org.neo4j.io.pagecache.tracing.cursor.PageCursorTracer in project neo4j by neo4j.

the class CommitProcessTracingIT method assertZeroCursor.

private void assertZeroCursor(CursorContext cursorContext) {
    PageCursorTracer cursorTracer = cursorContext.getCursorTracer();
    assertThat(cursorTracer.pins()).isZero();
    assertThat(cursorTracer.unpins()).isZero();
    assertThat(cursorTracer.hits()).isZero();
}

Example 22 with PageCursorTracer

use of org.neo4j.io.pagecache.tracing.cursor.PageCursorTracer in project neo4j by neo4j.

the class NodeEntityTest method traceNodePageCacheAccessOnRelationshipTypeAndDegreeCount.

@Test
void traceNodePageCacheAccessOnRelationshipTypeAndDegreeCount() {
    long sourceId;
    var relationshipType = RelationshipType.withName("connection");
    try (Transaction tx = db.beginTx()) {
        var source = tx.createNode();
        createDenseNodeWithShortIncomingChain(tx, source, relationshipType);
        sourceId = source.getId();
        tx.commit();
    }
    try (Transaction tx = db.beginTx()) {
        var cursorContext = ((InternalTransaction) tx).kernelTransaction().cursorContext();
        PageCursorTracer cursorTracer = cursorContext.getCursorTracer();
        var source = tx.getNodeById(sourceId);
        cursorTracer.reportEvents();
        assertZeroTracer(cursorContext);
        source.getDegree(relationshipType, Direction.INCOMING);
        assertThat(cursorTracer.hits()).isEqualTo(3);
        assertThat(cursorTracer.unpins()).isEqualTo(0);
        assertThat(cursorTracer.pins()).isEqualTo(3);
    }
}

Example 23 with PageCursorTracer

use of org.neo4j.io.pagecache.tracing.cursor.PageCursorTracer in project neo4j by neo4j.

the class NodeEntityTest method assertZeroTracer.

private void assertZeroTracer(CursorContext cursorContext) {
    PageCursorTracer cursorTracer = cursorContext.getCursorTracer();
    assertThat(cursorTracer.hits()).isZero();
    assertThat(cursorTracer.unpins()).isZero();
    assertThat(cursorTracer.pins()).isZero();
}

Example 24 with PageCursorTracer

use of org.neo4j.io.pagecache.tracing.cursor.PageCursorTracer in project neo4j by neo4j.

the class ReadTracingIT method assertOneCursor.

private void assertOneCursor(CursorContext cursorContext) {
    PageCursorTracer cursorTracer = cursorContext.getCursorTracer();
    assertThat(cursorTracer.pins()).isOne();
    assertThat(cursorTracer.unpins()).isOne();
    assertThat(cursorTracer.hits()).isOne();
}

Example 25 with PageCursorTracer

use of org.neo4j.io.pagecache.tracing.cursor.PageCursorTracer in project neo4j by neo4j.

the class ReadTracingIT method assertZeroCursor.

private void assertZeroCursor(CursorContext cursorContext) {
    PageCursorTracer cursorTracer = cursorContext.getCursorTracer();
    assertThat(cursorTracer.pins()).isZero();
    assertThat(cursorTracer.unpins()).isZero();
    assertThat(cursorTracer.hits()).isZero();
    assertThat(cursorTracer.faults()).isZero();
}