How many is too many files per directory?

As the title would suggest, what is the recommended max number of files per directory on baobab or yggdrasil if we don’t want to cripple performace for ourselves or others?
Apologies if this has been answered elsewhere, I did a quick search and did not find the relevant info.
Thanks

Hi,

You can check this page: hpc:storage_on_hpc [eResearch Doc]
As you may see, the max we recommend is 1000 files per directory.

Thank you, I missed this, my mistake.