超出软进程大小限制错误怎么修？

问题描述

| 我的GAE应用程序出现以下错误：   2011-06-25 00：15：59.023 /发布500   30878ms 1796cpu_ms 0kb   Picasa / 117.430000（gzip），gzip（gfe）      2011-06-25 00：15：59.010超软   进程大小限制为197.977 MB   服务后，总共有16个请求 这是代码：

def post(self):
    \'\'\'Here we receive photos from the GetPostDetailsHandler (/).
    We upload them to vkontakte server one-by-one (vkontakte accepts
    5 files at once,but urlfetch allows only 1 Mb per request),and then save details of photos uploaded in memcache.
    Cookies are also saved there.
    \'\'\'
    # list of files for upload (max 5 files can be in the list)
    files = []
    # counts number of uploads to vkontakte server
    posts_sent = 0
    # calculate total number of files received
    # and store field names with files in files_arguments list
    arguments = self.request.arguments()
    files_arguments = []
    for argument in arguments:
        if \'localhost\' in argument:
        # if not (argument in [\'album\',\'albums_list\',\'album_custom\',\'upload_url\',\'album_id\',\'user_id\',\'body\',\'title\']): 
            files_arguments.append(argument) 
    logging.info(\'(POST) ... number of photos received: \'+str(len(files_arguments)))

    logging.info(\'(POST) ... upload process started\')
    files_counter = 0 # counts total number of files sent
    for argument in files_arguments:
        files_counter +=1
        file_size = len(self.request.get(argument))/(1024.0*1024.0)
        logging.info(\'(POST) ... size of file \'+str(files_counter)+\' is \'+str(file_size)+\' Mb\')
        if file_size <= 1:
            files.append(MultipartParam(\'file1\',self.request.get(argument),\'file\'+str(files_counter)+\'.jpg\',\'application/x-www-form-urlencoded\'))
            # sending file
            data,headers = multipart_encode(files)
            # try 3 times to send the file
            for i in range(3):
                try:
                    result = urlfetch.fetch(url=self.request.get(\'upload_url\'),payload=\'\'.join(data),method=urlfetch.POST,headers=headers,deadline=10
                                            )              
                    break
                except DownloadError:
                    logging.error(\'(POST) ... error during file upload,attempt \' + str(i))
                    pass
            if result.status_code == 200:
                # save result in the memcache for 10 minutes
                memcache.add(key=self.request.get(\'user_id\')+\'_\'+self.request.get(\'album_id\')+\'_\'+str(files_counter),value=result.content,time=600)
                # save description in the memcache
                memcache.add(key=self.request.get(\'user_id\')+\'_\'+self.request.get(\'album_id\')+\'_\'+str(files_counter)+\'_desc\',value=self.request.get(\'desc\'+str(files_counter)),time=600)
                logging.info(\'(POST) ... result of photos upload (\'+str(files_counter)+\'): \'+result.content)
                files = []      
    # save cookies
    cookies = self.request.headers.get(\'Cookie\')
    logging.info(cookies)
    memcache.add(key=self.request.get(\'user_id\')+\'_\'+self.request.get(\'album_id\')+\'_\'+\'cookies\',value=cookies,time=600)
    logging.info(\'(POST) ... upload process finished\')
    # return url for Picasa - SavePhotosHandler (/save) - it will be opened in user\'s default browser
    # so,we have to pass there key of data we saved in memcache
    self.response.out.write(\'http://picasa2vkontakte.appspot.com/save?\'+self.request.get(\'user_id\')+\'_\'+self.request.get(\'album_id\'))

怎么了我还发现，此类错误通常意味着应用程序内存泄漏。如何找到？     

解决方法

        这可能不是内存泄漏-您只是在使用所有可用的内存来处理上传的文件。最好的选择是使用Blobstore服务来避免自己处理文件。另外，请仔细检查您的代码，查看是否有任何实例复制了上传文件的内容（操纵这些文件，与字符串进行相互转换的任何操作等），并尝试将其最小化。 另外，由于您似乎只是立即将文件上传到另一个服务，因此请让您的用户直接上传到那里。     ,        因此问题出在脚本执行之前。上传的所有文件都存储在实例的内存中，实例在两次请求之间共享她的内存。 如果许多用户上传的图片太大，则可能会由于“超出内存限制”异常而杀死您的实例。 服务器端您无法解决问题，但可以使用Flash之类的插件在上传之前检查文件的大小。 或者另一种方式是使用服务blobstoreService