16.04 - sysctl: cannot stat /proc/sys/vm/bdflush: No such file or directory - Ask Ubuntu

i wanted make adjustment vm settings in ubuntu 16.04, following option wouldn't work saying bdflush file doesn't exist. removed in ubuntu 16.04?

added vm.bdflush setting => /etc/sysctl.conf:

#improve file system performance  vm.bdflush = 100 1200 128 512 15 5000 500 1884 2    $ echo "100 1200 128 512 15 5000 500 1884 2">/proc/sys/vm/bdflush bash: /proc/sys/vm/bdflush: no such file or directory  $ sudo sysctl -p sysctl: cannot stat /proc/sys/vm/bdflush: no such file or directory