MVTableEngine

h2/src/main/org/h2/mvstore/db/TransactionStore.java

@@ -128,6 +128,7 @@ public class TransactionStore {
                 // no entry
             } else if (last[0] == id) {
                 Transaction t = new Transaction(this, id, status, name, last[1]);
+                t.setStored(true);
                 openTransactionMap.put(id, t);
             }
         }
@@ -168,10 +169,11 @@ public class TransactionStore {
         if (store.getUnsavedPageCount() > MAX_UNSAVED_PAGES) {
             store.commit();
         }
-        long transactionId = t.getId();
-        if (openTransactions.containsKey(transactionId)) {
+        if (t.isStored()) {
             return;
         }
+        t.setStored(true);
+        long transactionId = t.getId();
         Object[] v = { t.getStatus(), null };
         openTransactions.put(transactionId, v);
         openTransactionMap.put(transactionId, t);
@@ -347,6 +349,8 @@ public class TransactionStore {
         private int status;
 
         private String name;
+        
+        private boolean stored;
 
         Transaction(TransactionStore store, long transactionId, int status, String name, long logId) {
             this.store = store;
@@ -357,6 +361,14 @@ public class TransactionStore {
             this.logId = logId;
         }
 
+        boolean isStored() {
+            return stored;
+        }
+
+        void setStored(boolean stored) {
+            this.stored = stored;
+        }
+
         /**
          * Get the transaction id.
          *
@@ -1047,7 +1059,7 @@ public class TransactionStore {
                     buff.put((byte) 0);
                 } else {
                     buff.put((byte) 1);
-                    t.write(buff, o);
+                    buff = t.write(buff, o);
                 }
             }
             return buff;

h2/src/test/org/h2/test/store/TestMVTableEngine.java

@@ -35,7 +35,7 @@ public class TestMVTableEngine extends TestBase {
     }
 
     public void test() throws Exception {
-        // testSpeed();
+        //testSpeed();
         testExclusiveLock();
         testEncryption();
         testReadOnly();
@@ -71,6 +71,11 @@ int tes;
         String url = getURL(dbName, true);
         String user = getUser();
         String password = getPassword();
+        
+//Profiler prof = new Profiler();
+//prof.sumClasses=true;
+//prof.startCollecting();
+        
         conn = DriverManager.getConnection(url, user, password);
         stat = conn.createStatement();
         long time = System.currentTimeMillis();
@@ -82,39 +87,39 @@ int tes;
                 .prepareStatement("insert into test values(?, ?)");
         
         // -mx4g
+        // fast size
         
         // 10000 / 8000
-        // 1229 mvstore;LOCK_MODE=0
-        // 1455 mvstore;LOCK_MODE=0
-        // 19 mvstore;DEFAULT_TABLE_ENGINE=org.h2.mvstore.db.MVTableEngine;LOCK_MODE=0
-        // 659 mvstore;DEFAULT_TABLE_ENGINE=org.h2.mvstore.db.MVTableEngine;LOCK_MODE=0
+        // 1278 mvstore;LOCK_MODE=0 before
+        // 1524 mvstore;LOCK_MODE=0 after
+        // 790 mvstore;DEFAULT_TABLE_ENGINE=org.h2.mvstore.db.MVTableEngine;LOCK_MODE=0 before
+        // 834 mvstore;DEFAULT_TABLE_ENGINE=org.h2.mvstore.db.MVTableEngine;LOCK_MODE=0 after
 
         // 1000 / 80000
-        // 1383 mvstore;LOCK_MODE=0
-        // 1618 mvstore;LOCK_MODE=0
-        // 244 mvstore;DEFAULT_TABLE_ENGINE=org.h2.mvstore.db.MVTableEngine;LOCK_MODE=0
-        // 965 mvstore;DEFAULT_TABLE_ENGINE=org.h2.mvstore.db.MVTableEngine;LOCK_MODE=0
+        // 1753 mvstore;LOCK_MODE=0 before
+        // 1998 mvstore;LOCK_MODE=0 after
+        // 810 mvstore;DEFAULT_TABLE_ENGINE=org.h2.mvstore.db.MVTableEngine;LOCK_MODE=0 before
+        // 818 mvstore;DEFAULT_TABLE_ENGINE=org.h2.mvstore.db.MVTableEngine;LOCK_MODE=0 after
         
         // 100 / 800000
-        // 2061 mvstore;LOCK_MODE=0
-        // 2281 mvstore;LOCK_MODE=0
-        // 1414 mvstore;DEFAULT_TABLE_ENGINE=org.h2.mvstore.db.MVTableEngine;LOCK_MODE=0
-        // 2647 mvstore;DEFAULT_TABLE_ENGINE=org.h2.mvstore.db.MVTableEngine;LOCK_MODE=0
-
-        // 10 / 8000000
-        // 11453 mvstore;LOCK_MODE=0
-        // 11720 mvstore;LOCK_MODE=0
-        // 13605 mvstore;DEFAULT_TABLE_ENGINE=org.h2.mvstore.db.MVTableEngine;LOCK_MODE=0
-        // 25172 mvstore;DEFAULT_TABLE_ENGINE=org.h2.mvstore.db.MVTableEngine;LOCK_MODE=0
+        // 2270 mvstore;LOCK_MODE=0 before
+        // 2841 mvstore;LOCK_MODE=0 after
+        // 2107 mvstore;DEFAULT_TABLE_ENGINE=org.h2.mvstore.db.MVTableEngine;LOCK_MODE=0 before
+        // 2116 mvstore;DEFAULT_TABLE_ENGINE=org.h2.mvstore.db.MVTableEngine;LOCK_MODE=0 after
+
+        // 10 / 800000
+        // 1312 mvstore;LOCK_MODE=0 before
+        // 1500 mvstore;LOCK_MODE=0 after
+        // 1541 mvstore;DEFAULT_TABLE_ENGINE=org.h2.mvstore.db.MVTableEngine;LOCK_MODE=0 before
+        // 1551 mvstore;DEFAULT_TABLE_ENGINE=org.h2.mvstore.db.MVTableEngine;LOCK_MODE=0 after
         
         prep.setString(2, new String(new char[10]).replace((char) 0, 'x'));
-        for (int i = 0; i < 800000; i++) {
+        for (int i = 0; i < 80000; i++) {
             
             prep.setInt(1, i);
             prep.execute();
         }
         System.out.println((System.currentTimeMillis() - time) + " " + dbName + " before");
-//Profiler prof = new Profiler().startCollecting();
         conn.close();
 //System.out.println(prof.getTop(10));        
         System.out.println((System.currentTimeMillis() - time) + " " + dbName + " after");