> the setting
> maximum_object_size 4 MB
> is the default;
> would the following setting
> maximum_object_size 2 MB
> also mean,
> that there would be stored much more objects on disk?
Yes, but ... it depends on what object sizes your network is
transferring and whether those smaller ones will fill your cache. And on
how many 2-4 MB files are actually being stored already.
You also have to consider how popular the big objects are. It is no use
preventing big and popular objects from caching just to store smaller
and less popular ones. That would reduce bandwidth savings.