Re: Is sendfile all that sexy?

From: Ingo Molnar (mingo@elte.hu)
Date: Tue Jan 16 2001 - 07:42:37 EST


On Tue, 16 Jan 2001, Felix von Leitner wrote:

> I don't know how Linux does it, but returning the first free file
> descriptor can be implemented as O(1) operation.

to put it more accurately: the requirement is to be able to open(), use
and close() an unlimited number of file descriptors with O(1) overhead,
under any allocation pattern, with only RAM limiting the number of files.
Both of my proposals attempt to provide this. It's possible to open() O(1)
but do a O(log(N)) close(), but that is of no practical value IMO.

        Ingo

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
Please read the FAQ at http://www.tux.org/lkml/



This archive was generated by hypermail 2b29 : Tue Jan 23 2001 - 21:00:12 EST