use special logger for insertion metrics

This allows us to enable/disable metric logging without having to log 
other stuff.

pdb-ui/src/main/java/org/lucares/pdbui/TcpIngestor.java

@@ -102,7 +102,7 @@ public class TcpIngestor implements Ingestor, AutoCloseable, DisposableBean {
 					}
 
 					if (entry.isPresent()) {
-						LOGGER.trace("adding entry to queue: {}", entry);
+						LOGGER.debug("adding entry to queue: {}", entry);
 						queue.put(entry.get());
 					}
 

performanceDb/src/main/java/org/lucares/performance/db/PerformanceDb.java

@@ -32,6 +32,7 @@ import com.fasterxml.jackson.databind.ObjectMapper;
 
 public class PerformanceDb implements AutoCloseable, CollectionUtils {
 	private final static Logger LOGGER = LoggerFactory.getLogger(PerformanceDb.class);
+	private final static Logger METRICS_LOGGER = LoggerFactory.getLogger("org.lucares.metrics.ingestion.block");
 
 	private final TagsToFile tagsToFile;
 
@@ -65,7 +66,7 @@ public class PerformanceDb implements AutoCloseable, CollectionUtils {
 
 	public void put(final BlockingIterator<Entry> entries) throws WriteException {
 
-		final int blocksize = 10000;
+		final int blocksize = 100000;
 		long count = 0;
 
 		try {
@@ -90,8 +91,8 @@ public class PerformanceDb implements AutoCloseable, CollectionUtils {
 					if (count % blocksize == 0) {
 						final long end = System.currentTimeMillis();
 						final long duration = end - start;
-						LOGGER.debug("inserting the last " + blocksize + " took " + duration + " ms; total entries: "
-								+ count / 1_000_000.0 + " million");
+						METRICS_LOGGER.debug("inserting the last " + blocksize + " took " + duration
+								+ " ms; total entries: " + count / 1_000_000.0 + " million");
 
 						start = System.currentTimeMillis();
 					}