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

Example 1 with DefaultPageCacheTracer

use of org.neo4j.io.pagecache.tracing.DefaultPageCacheTracer in project neo4j by neo4j.

the class MuninnPageCacheStressIT method shouldHandleTheStressOfOneMillionEvictions.

@Test
public void shouldHandleTheStressOfOneMillionEvictions() throws Exception {
    DefaultPageCacheTracer monitor = new DefaultPageCacheTracer();
    Condition condition = numberOfEvictions(monitor, 1_000_000);
    PageCacheStressTest runner = new PageCacheStressTest.Builder().withWorkingDirectory(testDirectory.directory()).with(monitor).with(condition).build();
    runner.run();
}

Example 2 with DefaultPageCacheTracer

use of org.neo4j.io.pagecache.tracing.DefaultPageCacheTracer in project neo4j by neo4j.

the class NeoStoresTest method tracePageCacheAccessOnTransactionCloseCall.

@Test
void tracePageCacheAccessOnTransactionCloseCall() {
    StoreFactory factory = getStoreFactory(Config.defaults(), databaseLayout, fs, LOG_PROVIDER);
    try (NeoStores neoStore = factory.openAllNeoStores(true)) {
        MetaDataStore store = neoStore.getMetaDataStore();
        var cacheTracer = new DefaultPageCacheTracer();
        var cursorContext = new CursorContext(cacheTracer.createPageCursorTracer("tracePageCacheAccessOnTransactionCloseCall"));
        store.transactionClosed(store.nextCommittingTransactionId(), 6666, 15, cursorContext);
        PageCursorTracer cursorTracer = cursorContext.getCursorTracer();
        assertEquals(1, cursorTracer.pins());
        assertEquals(1, cursorTracer.hits());
        assertEquals(1, cursorTracer.unpins());
    }
}

Example 3 with DefaultPageCacheTracer

use of org.neo4j.io.pagecache.tracing.DefaultPageCacheTracer in project neo4j by neo4j.

the class NeoStoresIT method tracePageCacheAccessOnUpdateRecord.

@Test
void tracePageCacheAccessOnUpdateRecord() {
    var storageEngine = db.getDependencyResolver().resolveDependency(RecordStorageEngine.class);
    var neoStores = storageEngine.testAccessNeoStores();
    var nodeStore = neoStores.getNodeStore();
    long nodeId;
    try (Transaction transaction = db.beginTx()) {
        var node = transaction.createNode();
        node.setProperty("a", "b");
        nodeId = node.getId();
        transaction.commit();
    }
    var cursorContext = new CursorContext(new DefaultPageCacheTracer().createPageCursorTracer("tracePageCacheAccessOnUpdateRecord"));
    nodeStore.updateRecord(new NodeRecord(nodeId), cursorContext);
    PageCursorTracer cursorTracer = cursorContext.getCursorTracer();
    assertEquals(5, cursorTracer.hits());
    assertEquals(6, cursorTracer.pins());
    assertEquals(6, cursorTracer.unpins());
}

Example 4 with DefaultPageCacheTracer

use of org.neo4j.io.pagecache.tracing.DefaultPageCacheTracer in project neo4j by neo4j.

the class NeoStoresIT method tracePageCacheAccessOnHighIdScan.

@Test
void tracePageCacheAccessOnHighIdScan() {
    var storageEngine = db.getDependencyResolver().resolveDependency(RecordStorageEngine.class);
    var neoStores = storageEngine.testAccessNeoStores();
    var propertyStore = neoStores.getPropertyStore();
    for (int i = 0; i < 1000; i++) {
        try (Transaction transaction = db.beginTx()) {
            var node = transaction.createNode();
            node.setProperty("a", randomAscii(1024));
            transaction.commit();
        }
    }
    var cursorContext = new CursorContext(new DefaultPageCacheTracer().createPageCursorTracer("tracePageCacheAccessOnHighIdScan"));
    propertyStore.scanForHighId(cursorContext);
    PageCursorTracer cursorTracer = cursorContext.getCursorTracer();
    assertEquals(1, cursorTracer.hits());
    assertEquals(1, cursorTracer.pins());
    assertEquals(1, cursorTracer.unpins());
}

Example 5 with DefaultPageCacheTracer

use of org.neo4j.io.pagecache.tracing.DefaultPageCacheTracer in project neo4j by neo4j.

the class NeoStoresIT method tracePageCacheAccessOnGetRawRecordData.

@Test
void tracePageCacheAccessOnGetRawRecordData() throws IOException {
    var storageEngine = db.getDependencyResolver().resolveDependency(RecordStorageEngine.class);
    var neoStores = storageEngine.testAccessNeoStores();
    var propertyStore = neoStores.getPropertyStore();
    try (Transaction transaction = db.beginTx()) {
        var node = transaction.createNode();
        node.setProperty("a", "b");
        transaction.commit();
    }
    var cursorContext = new CursorContext(new DefaultPageCacheTracer().createPageCursorTracer("tracePageCacheAccessOnGetRawRecordData"));
    propertyStore.getRawRecordData(1L, cursorContext);
    PageCursorTracer cursorTracer = cursorContext.getCursorTracer();
    assertEquals(1, cursorTracer.hits());
    assertEquals(1, cursorTracer.pins());
    assertEquals(1, cursorTracer.unpins());
}