Re:Mkfile(8) is severely syscall limited on OS X
by bogomipz on Sunday February 12, 2017 @11:12AM
(#13628969)
I certainly wouldn't classify myself as an "OS X" supporter by any means. I don't think I've ever actually defended it :)
I was more responding to the blanket statement that system calls are more expensive on OS X.
You first citation is ancient by the way, thats 11 years ago now.
You second link states in the conclusion section:
"First, Mac OSX uses a hybrid monolithic and microkernel architecture inwhich system calls must be wrapped into an RPC messageto the Mach microkernel. "
But in XNU/Darwin there are three different mechanism for systems calls - traditional BSD style traps, Mach traps, and Mach RPC.
I didn't really understand how the other 3 links related or I guess specifically what I was looking for in those.
I was more responding to the blanket statement that system calls are more expensive on OS X.
You first citation is ancient by the way, thats 11 years ago now.
You second link states in the conclusion section:
"First, Mac OSX uses a hybrid monolithic and microkernel architecture inwhich system calls must be wrapped into an RPC messageto the Mach microkernel. "
But in XNU/Darwin there are three different mechanism for systems calls - traditional BSD style traps, Mach traps, and Mach RPC.
I didn't really understand how the other 3 links related or I guess specifically what I was looking for in those.