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

Example 31 with PageCursorTracer

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

the class SimpleIndexAccessorCompatibility method tracePageCacheAccessOnConsistencyCheck.

@Test
public void tracePageCacheAccessOnConsistencyCheck() {
    var pageCacheTracer = new DefaultPageCacheTracer();
    try (var cursorContext = new CursorContext(pageCacheTracer.createPageCursorTracer("tracePageCacheAccessOnConsistencyCheck"))) {
        accessor.consistencyCheck(ReporterFactories.noopReporterFactory(), cursorContext);
        PageCursorTracer cursorTracer = cursorContext.getCursorTracer();
        assertThat(cursorTracer.pins()).isEqualTo(2);
        assertThat(cursorTracer.unpins()).isEqualTo(2);
        assertThat(cursorTracer.faults()).isEqualTo(2);
    }
}

Example 32 with PageCursorTracer

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

the class TransactionCountingStateVisitorTraceIT method assertTwoCursor.

private void assertTwoCursor(CursorContext cursorContext) {
    PageCursorTracer cursorTracer = cursorContext.getCursorTracer();
    assertThat(cursorTracer.pins()).isEqualTo(2);
    assertThat(cursorTracer.hits()).isEqualTo(2);
    assertThat(cursorTracer.unpins()).isEqualTo(2);
}

Example 33 with PageCursorTracer

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

the class PropertyStoreTraceIT method tracePageCacheAccessOnPropertyBlockIdGeneration.

@Test
void tracePageCacheAccessOnPropertyBlockIdGeneration() {
    var propertyStore = storageEngine.testAccessNeoStores().getPropertyStore();
    prepareIdGenerator(propertyStore.getStringStore().getIdGenerator());
    var pageCacheTracer = new DefaultPageCacheTracer();
    try (var cursorContext = new CursorContext(pageCacheTracer.createPageCursorTracer("tracePageCacheAccessOnPropertyBlockIdGeneration"))) {
        var propertyBlock = new PropertyBlock();
        var dynamicRecord = new DynamicRecord(2);
        dynamicRecord.setData(new byte[] { 0, 1, 2, 3, 4, 5, 6, 7 });
        propertyBlock.addValueRecord(dynamicRecord);
        propertyStore.encodeValue(propertyBlock, 1, stringValue(randomAlphabetic((int) kibiBytes(4))), cursorContext, INSTANCE);
        PageCursorTracer cursorTracer = cursorContext.getCursorTracer();
        assertThat(cursorTracer.pins()).isOne();
        assertThat(cursorTracer.unpins()).isOne();
        assertThat(cursorTracer.hits()).isOne();
    }
}

Example 34 with PageCursorTracer

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

the class GBPTreeSingleWriterTest method trackPageCacheAccessOnClose.

@Test
void trackPageCacheAccessOnClose() throws IOException {
    var pageCacheTracer = new DefaultPageCacheTracer();
    var cursorContext = new CursorContext(pageCacheTracer.createPageCursorTracer("trackPageCacheAccessOnClose"));
    assertZeroCursor(cursorContext);
    try (var gbpTree = new GBPTreeBuilder<>(pageCache, directory.file("index"), layout).build();
        var treeWriter = gbpTree.writer(0, cursorContext)) {
    // empty, we check that closing everything register unpins event
    }
    PageCursorTracer cursorTracer = cursorContext.getCursorTracer();
    assertThat(cursorTracer.pins()).isEqualTo(1);
    assertThat(cursorTracer.hits()).isEqualTo(1);
    assertThat(cursorTracer.unpins()).isEqualTo(1);
    assertThat(cursorTracer.faults()).isEqualTo(0);
}

Example 35 with PageCursorTracer

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

the class RecordStoreVersionCheckTest method tracePageCacheAccessOnStoreVersionAccessConstruction.

@Test
void tracePageCacheAccessOnStoreVersionAccessConstruction() throws IOException {
    var pageCacheTracer = new DefaultPageCacheTracer();
    var cursorContext = new CursorContext(pageCacheTracer.createPageCursorTracer("tracePageCacheAccessOnStoreVersionAccessConstruction"));
    Path neoStore = emptyFile(fileSystem);
    String storeVersion = "V1";
    long v1 = MetaDataStore.versionStringToLong(storeVersion);
    MetaDataStore.setRecord(pageCache, neoStore, MetaDataStore.Position.STORE_VERSION, v1, databaseLayout.getDatabaseName(), NULL);
    var versionCheck = newStoreVersionCheck();
    assertEquals(storeVersion, versionCheck.storeVersion(cursorContext).get());
    PageCursorTracer cursorTracer = cursorContext.getCursorTracer();
    assertThat(cursorTracer.pins()).isOne();
    assertThat(cursorTracer.unpins()).isOne();
    assertThat(cursorTracer.faults()).isOne();
}