It seams that the FwgThread is responsible for handling request to underlying filesystem. changing threads parameters does't affect the threads count of FwgThread, always been 8, so how to change it? I want to see how the thread count affect my filesystem performance.
81578 root 20 0 11.6g 808448 17280 D 1.0 0.1 0:03.37 FwgThread OpFor
81577 root 20 0 11.6g 808448 17280 D 0.7 0.1 0:03.36 FwgThread OpFor
81579 root 20 0 11.6g 808448 17280 D 0.7 0.1 0:03.36 FwgThread OpFor
81580 root 20 0 11.6g 808448 17280 D 0.7 0.1 0:03.38 FwgThread OpFor
81581 root 20 0 11.6g 808448 17280 D 0.7 0.1 0:03.36 FwgThread OpFor
81582 root 20 0 11.6g 808448 17280 D 0.7 0.1 0:03.37 FwgThread OpFor
81583 root 20 0 11.6g 808448 17280 D 0.7 0.1 0:03.37 FwgThread OpFor
81584 root 20 0 11.6g 808448 17280 D 0.7 0.1 0:03.36 FwgThread OpFor