On 03/15/2012 08:02 PM, Konrad Rzeszutek Wilk wrote: > > > > Nice. This takes care of the tail-end of the streaming (the more > > important one - since it always involves a cold copy). What about the > > other side? Won't the read code invoke cleancache_get_page() for every > > page? (this one is just a null hypercall, so it's cheaper, but still > > expensive). > > That is something we should fix - I think it was mentioned in the frontswap > email thread the need for batching and it certainly seems required as those > hypercalls aren't that cheap. In fact when tmem was first proposed I asked for two changes - make it batchable, and make it asynchronous (so we can offload copies to a dma engine, etc). Of course that would have made tmem significantly more complicated. -- error compiling committee.c: too many arguments to function -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
