Thanks ,I feel a great honour to finished these test and happy to help improved fio. And I am trying to decrease the librbd latency. I have make some small progess. 2014-10-30 10:55 GMT+08:00 Jens Axboe <axboe@xxxxxxxxx>: > On 2014-10-29 20:50, Ketor D wrote: >> >> Hi Jens, >> >> The current code runs good! >> >> Test Conf: jobs=1 iodepth=1 bs=4k >> >> if busy_poll = 1, IOPS is 38989. >> if busy_poll = 0, IOPS is 33031. >> >> And busy_poll=0 test result looks no difference from the old code than >> do not have sorted events wait. > > > Good to hear! I think we can safely say that we've pushed rbd as far as we > can. At least on the fio side. Still appears to be some suboptimal parts of > the librbd API. And the kernel rbd driver could definitely be improved a lot > as well. Using busy_poll on the user side gets rid of a sleep/wakeup cycle > at that end, but the kernel driver still punts and offloads any work item to > a work queue... > > Thanks for all your testing through this, really appreciated! > > -- > Jens Axboe > -- To unsubscribe from this list: send the line "unsubscribe fio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
