up the walls
(idiomatic, UK, Ireland, regarding a workplace, etc.) Very busy, swamped.
We were up the walls last week and I got ten hours overtime.
We didn't go to the restaurant as it was up the walls.
I need something to do when I'm not working, or I crawl up the walls. So I've just taken up kung fu. I was looking for some kind of calming, relaxing activity. I tried yoga, but it wasn't really me. Ian Hart
Then the song! Ah, then the sabre Flashing up the walls of night! Hate of wrong and love of neighbor Rhymes of battle for the Right! Joaquin Miller