On Sat, 23 Oct 2004, Tom Lane wrote: > Seems to me the overhead of any such scheme would swamp the savings from > avoiding kernel/userspace copies ...
Well, one really can't know without testing, but memory copies are extremely expensive if they go outside of the cache. > the locking issues alone would be painful. I don't see why they would be any more painful than the current locking issues. In fact, I don't see any reason to add more locking than we already use when updating pages. cjs -- Curt Sampson <[EMAIL PROTECTED]> +81 90 7737 2974 http://www.NetBSD.org Make up enjoying your city life...produced by BIC CAMERA ---------------------------(end of broadcast)--------------------------- TIP 1: subscribe and unsubscribe commands go to [EMAIL PROTECTED]
