diff --git a/rag/app/book.py b/rag/app/book.py
index 613c1f2cae022a0598eb525029b52751c4270d5a..3e1eaf725052ae0ada41dde7184d4e687e1809e2 100644
--- a/rag/app/book.py
+++ b/rag/app/book.py
@@ -76,6 +76,7 @@ def chunk(filename, binary=None, from_page=0, to_page=100000,
             binary if binary else filename, from_page=from_page, to_page=to_page)
         remove_contents_table(sections, eng=is_english(
             random_choices([t for t, _ in sections], k=200)))
+        tbls = [((None, lns), None) for lns in tbls]
         callback(0.8, "Finish parsing.")
 
     elif re.search(r"\.pdf$", filename, re.IGNORECASE):
diff --git a/rag/app/naive.py b/rag/app/naive.py
index cd77cdc485da550f567a7401e44d6ac3c63a3e27..2ab05c1aad1acc6736990692740b3143bdc279c7 100644
--- a/rag/app/naive.py
+++ b/rag/app/naive.py
@@ -13,6 +13,7 @@
 from tika import parser
 from io import BytesIO
 from docx import Document
+from timeit import default_timer as timer
 import re
 from deepdoc.parser.pdf_parser import PlainParser
 from rag.nlp import huqie, naive_merge, tokenize_table, tokenize_chunks, find_codec
@@ -67,7 +68,6 @@ class Docx(DocxParser):
 class Pdf(PdfParser):
     def __call__(self, filename, binary=None, from_page=0,
                  to_page=100000, zoomin=3, callback=None):
-        from timeit import default_timer as timer
         start = timer()
         callback(msg="OCR is  running...")
         self.__images__(
@@ -83,7 +83,6 @@ class Pdf(PdfParser):
         start = timer()
         self._layouts_rec(zoomin)
         callback(0.63, "Layout analysis finished.")
-        print("layouts:", timer() - start)
         self._table_transformer_job(zoomin)
         callback(0.65, "Table analysis finished.")
         self._text_merge()
@@ -93,8 +92,7 @@ class Pdf(PdfParser):
         self._concat_downward()
         #self._filter_forpages()
 
-        cron_logger.info("layouts: {}".format(
-            (timer() - start) / (self.total_page + 0.1)))
+        cron_logger.info("layouts: {}".format(timer() - start))
         return [(b["text"], self._line_tag(b, zoomin))
                 for b in self.boxes], tbls
 
@@ -167,12 +165,14 @@ def chunk(filename, binary=None, from_page=0, to_page=100000,
         raise NotImplementedError(
             "file type not supported yet(doc, docx, pdf, txt supported)")
 
+    st = timer()
     chunks = naive_merge(
         sections, parser_config.get(
             "chunk_token_num", 128), parser_config.get(
             "delimiter", "\n!?。；！？"))
 
     res.extend(tokenize_chunks(chunks, doc, eng, pdf_parser))
+    cron_logger.info("naive_merge({}): {}".format(filename, timer() - st))
     return res