Re: Counting System Calls

kwr@kwr.hnv.com
Fri, 17 Apr 1998 17:13:22 -0500 (CDT)


And lo, MOLNAR Ingo saith unto me:
> but there is a granularity problem i think. With modules we 'waste' about
> 2K per module due to 4K page sizes. (every module has to have it's own set
> of pages). With 183 syscalls we'd waste much more 'partial pages', about
> 183*2K=366K resident memory, brrr.

The only reason to advocate as 1:1 system call:syscall module ratio would
be getting such timers "for free". In real life, I think you want to
modularize in somewhat larger chunks than a single syscall, and if you
modularize a syscall there's probably a good bit of related code that
can go into the same module, since only that syscall (or those few
syscalls) uses it...

If someone really wants a syscall count, they should just count the
syscalls and skip the Rube Goldberg bit with the modules.

Keith

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu