On 3/21/19 5:10 PM, Christoph Hellwig wrote: > Hi all, > > with all the discussion on small I/O performance lately I thought > it was time off to dust my old idea to optimize this path a bit > by avoiding to build a scatterlist. I've only done very basic > testing because I've been a bit busy, but I thought it might be > worthwhile to get it out for feedback. I ran this through some quick testing, and it's a big win for 4k IOs here. Around an 8% improvement for cases that are CPU bound. -- Jens Axboe
