> On Dec 26, 2023, at 23:38, Michael S. Tsirkin <mst@xxxxxxxxxx> wrote: > > On Tue, Dec 26, 2023 at 05:01:40PM +0800, Li Feng wrote: >> I don't have ideas right now to answer Christoph/Paolo's question. > > Paolo did some testing on this thread and posted some concerns. > Do you disagree with his analysis? Paolo gave a very detailed data analysis. Indeed, in some low queue depth scenarios, the data dropped somewhat. However, I suspect that it may be caused by other problems (such as test fluctuations) rather than the benefits brought by deadline. BTW, I think 128 queue depth test is a very important and common performance test item for storage devices. Thanks, Li > > -- > MST >