On Thursday, March 17, 2005 1:38 pm, Evgeniy Polyakov wrote: > The most significant part there - is requirement to store > u32 seq in each CPU's cache and thus flush cacheline + > invalidate/get from mem on each other cpus > each time it is accessed, which is a big price.
Same thing has to happen with the lock. To put it simply, writing global variables from multiple CPUs with anything other than very low frequency is bad. > It is totally Guillaume's work - so he decides, > I would recomend per cpu counters and processor's > id in each message. > And of course userspace should take care of misordered > messages. > I personally prefer such mechanism. Yep, I agree. Hopefully Guillaume will too :) Jesse - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
