u/McDonaldsWi-Fi

Hey guys!

I'm a little confused on how the global open file table works and how the kernel decides if a new entry should be added or if an existing one should just just have its f_count++'d

So here is a simple scenario:

Process1 opens a file using flags 123 and mode 456

Process2 also opens that file using flags 123 and mode 456

In this situation would the kernel have 2 file entries in the global open file table, or would it just +1 the f_count on one entry since the inode number, flags, and mode are the same?

If it does just +1 the reference does this mean the 2 processes have to share the file offset? I can't see how that would be good.

So yeah to recap my question is: How does the kernel decide between adding another file entry to the global open file table or just +1 the reference count of an existing one?

Thanks!

I've heard this argument from boosters and others. The argument is these AI companies aren't profitable now because they are sinking too much into their scaling and otherwise they would be profitable (or at least have a path to being profitable)... but I don't think this to be true. The existing GPU depreciation/data center costs alone is massive, and they are still heavily subsidizing their tokens even though enshittification has already begun.

What do you all think?