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Asked: 2026-06-05T01:18:19+00:00

I’ve created a pretty simple Django app which somewhat produces a high CPU load:

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I’ve created a pretty simple Django app which somewhat produces a high CPU load: rendering a simple generic view with a list of simple models (20 of them) and 5-6 SQL queries per page produce an apache process which loads CPU by 30% – 50%. While memory usage is pretty ok (30MB), CPU load is not ok to my understanding and this is not because of apache/wsgi settings or something, the same CPU load happens when I run the app via runserver.

Since, I’m new to Django I wanted to ask:
1) Are these 30-50% figures an usual thing for a Django app? (Django 1.4, ubuntu 12.04, python 2.7.3)
2) How do I profile CPU load? I used a profile middleware from here: http://djangosnippets.org/snippets/186/ but it shows only ms numbers not CPU load numbers and there was nothing special, so how do I identify what eats up so much CPU power?

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1 Answer

  1. Editorial Team

    CPU usage itself doesn’t tell how efficient your app is. More important metric to measure the performance is how many requests/second your app can process. The kind of processor your machine has naturally also has a huge effect on the results.

    I suggest you to run ab with multiple concurrent requests and compare the requests/second number to some benchmarks (there should be many around the net). ab will try to test the maximum throughput, so it’s natural that one of the resources will be fully utilized (bottleneck), usually this is disk-io. As an example if you happen to get CPU usage close to 100% it may mean you are wasting CPU somewhere (reqs/second is low) or you that have optimized disk-io well (reqs/s high).

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