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
23157	O(n) behaviour in default configuration when uploading many duplicate filenames	dw	Tim Graham	"In the default configuration, Django django/core/files/storage.py get_available_name() may degrade to producing a huge number of stat() system calls when a duplicate filename is being uploaded. Since stat() may invoke IO, this may produce a huge data-dependent slowdown that slowly worsens over time.

The problem was originally detected by our test suite, but it is likely that especially older Django installations will be experiencing it too, perhaps without even realizing.

I filed a pull request at https://github.com/django/django/pull/3008 before reading the contributor documentation. It seems to suggest I should file a bug to be triaged before submitting a pull?

This is my first Django contribution, so apologies for any confusion."	Cleanup/optimization	closed	File uploads/storage	dev	Normal	fixed			Accepted	1	0	0	1	0	0