On 6/25/24 2:39 AM, hexue wrote: > On 6/19/24 15:51, Jens Axboe wrote: >> On 6/19/24 08:18, hexue wrote: >> >> While I do suspect there are cases where hybrid polling will be more >> efficient, not sure there are many of them. And you're most likely >> better off just doing IRQ driven IO at that point? Particularly with the >> fairly substantial overhead of maintaining the data you need, and time >> querying. > > I rebuilt the test cases based on your information, that is, each drive has > only one thread with high pressure, there is a significant performance loss. > I previously provided test data for a single drive with multi-threaded, which > can achieve performance stable and CPU savings. > > Thanks for your data, I will reduce the cost of each IO and submit the next > version. Sounds good, thanks. I don't doubt it's useful for some cases as-is, but I think there's the potential for it to be more useful. -- Jens Axboe
