Python Django分析

Question

Problem:

I have a Django application. At the development stage I want to check

1. The number of users my app can support. These users can be :

   • users stored in the database
   • concurrent users

2. Find speed improvements, for example chunks of slow code

Tools Used:

I have installed django-debug-toolbar, which shows the Time (CPU) and SQL queries .

What I want:

I specifically want particular graphs or contitative data which can be presented to a large scale audience and on which improvements can be done.

Answer 1

I don't think there's an app for that matter.

You can use apache ab to measure how many requests your app can handle on a givel URL.

ab -c 5 -n 1000 http://yoururlhere.com

See the ab docs for more.

Your "users stored in the database" are limited by your servers hard disk space available, so this should not be a problem.

To find slow code the django toolbar is a good start. If you finde a site that takes long time to load, you can investigate which methods causing this by manually adding:

import logging
def my_slow_code(self):
  start = time.time()
  [slow code]
  logging.debug('my_slow_code took %s s to load' % str(time.time()-start))