On 2019/5/30 11:22 上午, Jianchao Wang wrote: > Dear guys > > We have an about 200T disk array and want to use a 2T ssd to cache it. > How many memory and ssd space are consumed by the bcache when the caching device > is nearly used up ? Hi Jianchao, It heavily depends on your workload for the SSD and memory consuming. It is better to test with your workload and get a number. For a full random I/O on the 200T disk array, bcache may occupy around 75% free space of the SSD, and as many as memory it can require from system. -- Coly Li
