id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
11572	Very high memory usage by big sitemaps	Piotr Maliński	nobody	"I'm using Py 2.5, Django 1.X, Nginx/FastCGI hosting at megiteam.pl. The site has a big sitemap - 9K elements, 1,7MB sitemap.xml file. The sitemap is done by the book with Sitemap framework:

{{{
class MainMap(Sitemap):
	changefreq = ""never""
	priority = 0.5
	
	def items(self):
		return JobOffer.objects.filter(published=True, inactive=False)
	
	def lastmod(self, obj):
		return obj.published_at
}}}
The problem is that looking at memstat -v after requesting sitemap.xml shows that memory usage boosts from 6MB just after restart to 105MB, and keeps at that level for every next request of the sitemap (where the file is 1,7MB). If I limit the query to 1000 elements I get ~22MB memory usage."	Cleanup/optimization	closed	contrib.sitemaps	dev	Normal	worksforme		simon@…	Accepted	0	0	0	0	0	0