I only do it with large format, and very occasionally in cases where I'm using rollfilm for studies of something that will eventually be shot in LF. All I write down (in a post-it on the darkslide) is basic equipment-and-exposure info: camera, lens, filter, date, film and EI, shutter and aperture, and the location if it won't be obvious from the image. This is way more information than I've ever needed, but I can at least imagine wanting to have it later.

Normal rolls just get the date, camera/lens, and EI if different from box speed. It's pretty hard to fit more than that into the space on a 120 roll anyway.

-NT