On 2018/10/16 下午9:40, Stefan Priebe - Profihost AG wrote: > Hi, > > is there any way to keep a constant writeback dirty size? I have set > writeback_percent to 15 and i want bcache to keep it at 15%. Currently > it often falls below the 15% and massivly higher the i/o and latency. > > I've also set congested_read_threshold_us and > congested_write_threshold_us to 0. > Hi Stefan, Do you mean that you want the dirty size to be stable around the writeback dirty target ? Could you please to explain why you want this ? Thanks. Coly Li
