6
在我的Django项目中有一个奇怪的MemoryError问题。Django mod_wsgi MemoryError
- Ubuntu的11
- 的Apache2
- Nginx的
- mod_wsgi的
- python2.7
我有一个模板标记，是在调整使用PIL图像，并在我的dev-的伟大工程机器，但在生产过程中，它会导致500张大图像（〜800px）的错误。模板标签似乎工作没有问题，但只有当原始图像已经非常小。模板标记是http://djangosnippets.org/snippets/1944/的修改版本
刚刚尝试过为python2.7重新编译mod_wsgi - 同样的错误。
有没有办法分配更多的内存，或者有其他的东西，我只是不理解？
任何帮助将不胜感激！
回溯通过电子邮件发送给我的是：
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
编辑：添加代码
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
发布实际的数字。 – agf 2012-04-19 19:16:05
我将我的（修改过的）脚本附加到了原始文章中，谢谢！ – sframe 2012-04-23 20:53:42
你在运行SELinux吗？在启用selinux的某些平台上有一些已知的ctypes问题：http://stackoverflow.com/questions/3762566/occasional-ctypes-error-importing-numpy-from-mod-wsgi-django-app – GDorn 2012-04-30 17:15:31