An application which manages kernel parameters. It depends on your kernel which features you can use.
With Kernel Adiutor you can tweak and monitor things like:
CPU (Frequency, Governor)I/O SchedulerKernel Samepage MergingLow Memory Killer (Minfree settings)Virtual MemoryFlash/BackupBuild prop EditorRecovery (Flash, Wipe)Init.d editorSaving Profiles
and a lot more... (check it out, keep in mind that only supported things will appear on your phone!)
Root required Hardware Monitoring I/O Monitoring
Productivity System and Hardware
root-required system-tweaker hardware-monitoring i-o-monitoring os-kernel