We've got an application that is running behind apache, mod_wsgi and front ending a postgres 8.3 db. We needed to upgrade our Satchmo to the latest version which requires Django 1.1. After the upgrade the system starts eventually running out of memory until it thrashes and locks up the machine under a fairly light load, just a few reqs per second. I can understand the system using more memory but it doesn't seem to release it when the load stops.
This graph: http://www.flickr.com/photos/proteusguy/3589788760 shows the results of both systems which, besides the Django & Satchmo versions are identical. You can see that when the test completes on the old system the process returns a great amount of memory but the new one never releases the memory. In production this will eventually grow to consume all RAM. This particular test is of a set of 7 different requests simulating what a typical user might do. This graph: http://www.flickr.com/photos/proteusguy/3589788752 shows a similar test except it only contains a single request out of the seven from the prior test. We were hoping to identify that something in one of our requests was the cause of the problem but similar exclusive test runs with all 7 requests from the combined test from above show similar results - fairly stable memory usage. This leads me to believe that the issue is systemic to django, most likely in the db handling as most of the requests don't touch the Satchmo system. If this was a C++ app I'd be able to figure this out pretty quick but I'm not sure how to attack the problem in a dynamic language environment like python. So this leaves me with two questions: 1. Is anyone else seeing this kind of memory extra memory usage and an inability to return memory once requests end? 2. What suggestions does anyone have about how I can determine what aspect of the system is using this extra memory and holding onto it? thanx very much, -- Ben Scherrey --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~----------~----~----~----~------~----~------~--~---
