I just tried kernel 5.3.0, and it's noticeably faster in opening
windows.  Not sure about overall throughput, though.

I'd be interested in how quick it is in unblocking processes who just got I/O. I have servers doing arrays of heavily parallel network requests who race each other to get back, but then compete to get a core to service them.

--dave

-- 
David Collier-Brown,         | Always do right. This will gratify
System Programmer and Author | some people and astonish the rest
davecb@spamcop.net           |                      -- Mark Twain