Code Changes - Added the time taken to build FAISS

ragbench.py

@@ -1,7 +1,7 @@
 import os
 import pickle
 from typing import List
-import re, json
+import re, json, time
 from dataclasses import dataclass
 from nltk.tokenize import sent_tokenize
 from langchain_community.embeddings import HuggingFaceEmbeddings
@@ -268,8 +268,13 @@ class RAGSystem:
             print(f"Failed to load FAISS index from {faissFolderPath}, so load from documents")
             if bChunkFileAvailable:
                 print(f"Building FAISS index from downloaded chunks")
+                start = time.time()
                 self.vector_store = FAISS.from_documents(langchain_docs, self.embedder)
-                print(f"FAISS index built successfully from chunks, saving to {faissFolderPath}")
+                duration = time.time() - start
+                # Convert to minutes and seconds
+                minutes = int(duration // 60)
+                seconds = int(duration % 60)
+                print(f"FAISS index built successfully from chunks in {minutes} minutes and {seconds} seconds, saving to {faissFolderPath}")
                 self._store_faiss_files(faissFolderPath)