after comfyui 52aaee2 update,workflow loadimge became slower too much

[kerker93]

Comfyui 52aaee2 update on 2024.07.02 chaged something about image input.Before this version,realtime is fast,after this version realtime is not real.
the update is like this:

_diff --git a/server.py b/server.py
index 30ea90c6c91c97a603af66b10419cfe65fa083bf..5b98620ad38010f3afb5bf70ab7d1df5242443f0 100644
--- a/server.py
+++ b/server.py
@@ -12,6 +12,7 @@ import json
import glob
import struct
import ssl
+import hashlib
from PIL import Image, ImageOps
from PIL.PngImagePlugin import PngInfo
from io import BytesIO
@@ -153,10 +154,24 @@ class PromptServer():
type_dir = folder_paths.get_output_directory()

         return type_dir, dir_type

•    def compare_image_hash(filepath, image):
  

•        # function to compare hashes of two images to see if it already exists, fix to #3465
  

•        if os.path.exists(filepath):
  

•            a = hashlib.sha256()
  

•            b = hashlib.sha256()
  

•            with open(filepath, "rb") as f:
  

•                a.update(f.read())
  

•                b.update(image.file.read())
  

•                image.file.seek(0)
  

•                f.close()
  

•            return a.hexdigest() == b.hexdigest()
  

•        return False
  

•    def image_upload(post, image_save_function=None):
         image = post.get("image")
         overwrite = post.get("overwrite")
  

•        image_is_duplicate = False
  
         image_upload_type = post.get("type")
         upload_dir, image_upload_type = get_dir_by_type(image_upload_type)
  

@@ -183,15 +198,19 @@ class PromptServer():
else:
i = 1
while os.path.exists(filepath):

•                    if compare_image_hash(filepath, image): #compare hash to prevent saving of duplicates with same name, fix for #3465
  

•                        image_is_duplicate = True
  

•                        break
                     filename = f"{split[0]} ({i}){split[1]}"
                     filepath = os.path.join(full_output_folder, filename)
                     i += 1
  

•            if image_save_function is not None:
  

•                image_save_function(image, post, filepath)
  

•            else:
  

•                with open(filepath, "wb") as f:
  

•                    f.write(image.file.read())
  

•            if not image_is_duplicate: 
  

•                if image_save_function is not None:
  

•                    image_save_function(image, post, filepath)
  

•                else:
  

•                    with open(filepath, "wb") as f:
  

•                        f.write(image.file.read())
  
             return web.json_response({"name" : filename, "subfolder": subfolder, "type": image_upload_type})
         else:_
  

If I delete these codes in comfyui/server.py, everything will be faster.But every update will overwrite server.py.So,somebody could tell why this happen ?