in default mode,Sony's ROM uses swaps, it means uses memory card as RAM
You can disable it by kernel aduitor app in virtual memory >> z-ram
Try it and see what happens
Hey there alireza21 - I've just finished deleting a number of duplicate posts you made about this problem in several threads - that is not allowed per Rule #5:
What you should have done is post about your problem with that kernel in the Q&A...