On Thu, Aug 9, 2018 at 9:31 AM, 刘硕然 <liushuoran@xxxxxx> wrote: > Thank you for the prompt reply. > > I tried this config, but still can get balance_dirty_pages triggered. I think it may be due to BDI_CAP_STRICTLIMIT used by fuse. If you remove that setting from fuse in the kernel you should not be getting the balance_dirty_pages() as often. Not sure if that's the realproblem, though, that depends on how much time is spent in balance_dirty_pages(). You can try profiling the kernel to find that out. My guess is that the real cause of the slowdown is some other place. There's for example a known issue with selinux related getxattr thrashing. Disabling getxattr on your filesystem may significantly improve performance. Thanks, Miklos
