Discard testing

Discard performance on bare device

DIscard performance on ext4 filesystem

Discard performance depending on device used space saturation

Discard kit: http://sourceforge.net/projects/test-discard/files/.
Test discard: http://sourceforge.net/projects/test-discard/files/.

Developers Conference 2011 (link)

Presentation topic: Performance Evaluation of Linux Discard Support (slides)

Linux storage and filesystem summit 2011 (link)

Presentation topic: Discard support review/update and benchmark numbers (slides)