diff --git a/performanceDb/src/main/java/org/lucares/performance/db/PdbExport.java b/performanceDb/src/main/java/org/lucares/performance/db/PdbExport.java
index 5173539..27d431c 100644
--- a/performanceDb/src/main/java/org/lucares/performance/db/PdbExport.java
+++ b/performanceDb/src/main/java/org/lucares/performance/db/PdbExport.java
@@ -78,7 +78,8 @@ public class PdbExport {
 
 			long count = 0;
 			long lastEpochMilli = 0;
-
+			long begin = System.currentTimeMillis();
+			
 			for (final PdbFile pdbFile : pdbFiles) {
 
 				if (writer == null || Files.size(exportFile) > GB) {
@@ -90,6 +91,8 @@ public class PdbExport {
 					exportFiles.add(exportFile);
 					writer = createWriter(exportFile);
 					LOGGER.info("new export file: {}", exportFile);
+					
+					lastEpochMilli = 0;
 				}
 
 				final Stream<LongList> timeValueStream = PdbFile.toStream(Arrays.asList(pdbFile), db.getDataStore());
@@ -97,6 +100,7 @@ public class PdbExport {
 				final Tags tags = pdbFile.getTags();
 				final long tagsId = addNewTagsToDictionary(writer, tags, tagsIdCounter);
 
+				
 				final Iterator<LongList> it = timeValueStream.iterator();
 				while (it.hasNext()) {
 					final LongList entry = it.next();
@@ -117,8 +121,13 @@ public class PdbExport {
 						writer.write('\n');
 
 						count++;
-						if (count % 100000 == 0) {
-							LOGGER.info("progress: " + count);
+						final long chunk = 10_000_000;
+						if (count % chunk == 0) {
+							long end = System.currentTimeMillis();
+							long duration = end-begin;
+							long entriesPerSecond = (long)((double)chunk / (duration / 1000.0));
+							LOGGER.info("progress: {} - {} entries/s + duration {}" , String.format("%,d",count), String.format("%,d",entriesPerSecond), duration);
+							begin = System.currentTimeMillis();
 						}
 					}
 				}