Inserting LOBs got slower each time the process was restarted.

h2/src/main/org/h2/store/fs/FileObjectMemory.java

@@ -20,7 +20,7 @@ import org.h2.util.MathUtils;
  */
 public class FileObjectMemory implements FileObject {
     private static final int CACHE_SIZE = 8;
-    private static final int BLOCK_SIZE_SHIFT = 16;
+    private static final int BLOCK_SIZE_SHIFT = 10;
     private static final int BLOCK_SIZE = 1 << BLOCK_SIZE_SHIFT;
     private static final int BLOCK_SIZE_MASK = BLOCK_SIZE - 1;
     private static final CompressLZF LZF = new CompressLZF();

h2/src/test/org/h2/test/db/TestLob.java

@@ -85,7 +85,7 @@ public class TestLob extends TestBase {
         stat.execute("set MAX_LENGTH_INPLACE_LOB 1");
         PreparedStatement prep = conn.prepareCall("insert into test values('0000')");
         // long start = System.currentTimeMillis();
-        for (int i = 0; i < 10000; i++) {
+        for (int i = 0; i < 2000; i++) {
             // if (i % 1000 == 0) {
             //     long now = System.currentTimeMillis();
             //     System.out.println(i + " " + (now - start));