Django mod_wsgi MemoryError

Question

私のDjangoプロジェクトでMemoryErrorに奇妙な問題があります。

• Ubuntuの11
• Apache2の
• nginxの
• のmod_wsgi
• python2.7

私はPILを使って画像をリサイズして、私のDEV-に素晴らしい作品れるテンプレートタグを持っていますしかし、実際には、大きな画像（〜800px）で500エラーが発生します。テンプレートタグは元の画像が既に非常に小さい場合にのみ問題なく動作するように見えます。テンプレートタグはhttp://djangosnippets.org/snippets/1944/

の修正版です。python2.7のmod_wsgiを再コンパイルしようとしました。同じエラーです。

もっと多くのメモリを割り当てる方法があるのでしょうか、それとも私が理解していないことがありますか？

ご協力いただければ幸いです。トレースバックは私に電子メールで送信

は次のとおりです。

Traceback (most recent call last): 

    File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/base.py", line 111, in get_response 
     response = callback(request, *callback_args, **callback_kwargs) 

    File "/var/www/rizzyhome.com/www/django/rizzyhome/products/views.py", line 31, in designs 
     context_instance=RequestContext(request) 

    File "/usr/local/lib/python2.7/dist-packages/django/shortcuts/__init__.py", line 20, in render_to_response 
     return HttpResponse(loader.render_to_string(*args, **kwargs), **httpresponse_kwargs) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/loader.py", line 188, in render_to_string 
     return t.render(context_instance) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/base.py", line 123, in render 
     return self._render(context) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/base.py", line 117, in _render 
     return self.nodelist.render(context) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/base.py", line 744, in render 
     bits.append(self.render_node(node, context)) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/base.py", line 757, in render_node 
     return node.render(context) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/loader_tags.py", line 127, in render 
     return compiled_parent._render(context) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/base.py", line 117, in _render 
     return self.nodelist.render(context) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/base.py", line 744, in render 
     bits.append(self.render_node(node, context)) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/base.py", line 757, in render_node 
     return node.render(context) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/loader_tags.py", line 127, in render 
     return compiled_parent._render(context) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/base.py", line 117, in _render 
     return self.nodelist.render(context) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/base.py", line 744, in render 
     bits.append(self.render_node(node, context)) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/base.py", line 757, in render_node 
     return node.render(context) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/loader_tags.py", line 64, in render 
     result = block.nodelist.render(context) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/base.py", line 744, in render 
     bits.append(self.render_node(node, context)) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/base.py", line 757, in render_node 
     return node.render(context) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/loader_tags.py", line 64, in render 
     result = block.nodelist.render(context) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/base.py", line 744, in render 
     bits.append(self.render_node(node, context)) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/base.py", line 757, in render_node 
     return node.render(context) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/defaulttags.py", line 227, in render 
     nodelist.append(node.render(context)) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/base.py", line 885, in render 
     return func(*func_args) 

    File "/var/www/rizzyhome.com/www/django/rizzyhome/products/templatetags/yair.py", line 108, in thumbnail 
     import Image, ImageOps 

    File "/usr/lib/python2.7/dist-packages/PIL/Image.py", line 45, in <module> 
     __import__("FixTk") 

    File "/usr/lib/python2.7/lib-tk/FixTk.py", line 15, in <module> 
     import ctypes 

    File "/usr/lib/python2.7/ctypes/__init__.py", line 549, in <module> 
     CFUNCTYPE(c_int)(lambda: None) 

    MemoryError 

編集：追加コードのコメントと支援を提供するために多く

import os, errno 

from django import template 
from django.conf import settings 

register = template.Library() 

def _mkdir_p(path): 
    try: 
     os.makedirs(path) 
    except OSError as exc: # Python >2.5 
     if exc.errno == errno.EEXIST: 
      pass 
     else: raise 

@register.simple_tag 
def thumbnail(image_url, width, height, THIS_ROOT=settings.MEDIA_ROOT, THIS_URL=settings.MEDIA_URL, img_w=None, img_h=None, method="crop"): 
    """ 
    Given the url to an image, resizes the image using the given width and 
    height on the first time it is requested, and returns the url to the new 
    resized image. If width or height are zero then the original ratio is 
    maintained. 
    """ 

    if not img_w: 
     img_w = width 

    if not img_h: 
     img_w = height 

    image_url = unicode(image_url) 

    # determine new paths 
    resized_image_reduced = os.path.join('_resized_', image_url.replace(THIS_ROOT, '')) 

    file_name, file_ext = os.path.basename(resized_image_reduced).split(os.extsep) 
    resized_image_absolute_path = os.path.join(
     THIS_ROOT, 
     os.path.dirname(resized_image_reduced), 
     u'%s__%05d-%05d_%s%s%s' % (file_name, width, height, method, os.extsep, file_ext) 
    ) 
    resized_image_relative_url = os.path.join(
     THIS_URL, 
     os.path.dirname(resized_image_reduced), 
     u'%s__%05d-%05d_%s%s%s' % (file_name, width, height, method, os.extsep, file_ext) 
    ) 

    # make sure target directory exists 
    _mkdir_p(os.path.realpath(os.path.dirname(resized_image_absolute_path))) 

    # abort if thumbnail exists, original image doesn't exist, invalid width or 
    # height are given, or PIL not installed, or thumbnail is newer than source image 
    if os.path.exists(resized_image_absolute_path): 
     if os.path.exists(image_url): 
      if os.path.getmtime(resized_image_absolute_path) > os.path.getmtime(image_url): 
       return resized_image_relative_url 
     else: 
      return resized_image_relative_url 
    if not image_url: 
     return "" 

    try: 
     width = int(width) 
     height = int(height) 
    except ValueError: 
     return resized_image_relative_url 

    if not os.path.exists(image_url) or (width == 0 and height == 0): 
     return image_url 

    try: 
     from PIL import Image, ImageOps 
    except ImportError: 
     return resized_image_relative_url 

    # open image, determine ratio if required and resize/crop/save 
    image = Image.open(image_url) 
    if width == 0: 
     width = image.size[0] * height/image.size[1] 
    elif height == 0: 
     height = image.size[1] * width/image.size[0] 
    if image.mode not in ("L", "RGB"): 
     image = image.convert("RGB") 

    try: 
     if method == 'scale': 

      image.thumbnail((width, height), Image.ANTIALIAS) 


      new_w, new_h = image.size 

      x1 = (img_w-new_w) /2 
      y1 = (img_h-new_h) 

      new_image = Image.new(image.mode, (img_w, img_h), (255,255,255)) 
      new_image.paste(image, (x1,y1)) 

      new_image.save(
       resized_image_absolute_path, 
       "JPEG", 
       quality=100 
      ) 

     elif method == 'crop': 
      image = ImageOps.fit(image, (width, height), Image.ANTIALIAS) 
      image.save(
       resized_image_absolute_path, 
       "JPEG", 
       quality=100 
      ) 

    except Exception, e: 
     raise 
     return resized_image_relative_url 

    return resized_image_relative_url 

Answer 1

感謝。

明らかにCTYPEモジュールの__init__.pyに奇妙なバグがあります。 - または何でも、私はそれを読んだだけです:)

修正プログラムは、少なくとも、__init__.pyファイルの最後の行をコメントアウトすることでした。最後の行はWindows 64bit専用で、私のUbuntuを台無しにしているようだ。

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=598727#38