Around 21 o'clock on Oct 22, Alan Cox wrote: > Unmapping something, especially with threaded apps on SMP boxes is > really really expensive. If you do the audit as you copy the data it may > well actually cost no more than a single copy
How expensive is it on a uniprocessor system? Copying data prior to DMA is not free, especially if the buffers span a significant fraction of the cache size. Keith Packard XFree86 Core Team HP Cambridge Research Lab ------------------------------------------------------- This sf.net emial is sponsored by: Influence the future of Java(TM) technology. Join the Java Community Process(SM) (JCP(SM)) program now. http://ad.doubleclick.net/clk;4699841;7576301;v?http://www.sun.com/javavote _______________________________________________ Dri-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/dri-devel
