Add cast to remove warning

Signed-off-by: Hiroshi Shimamoto <hshimamoto@gmx.com>
Add statistics

Signed-off-by: Hiroshi Shimamoto <hshimamoto@gmx.com>
Introduece sink()

Signed-off-by: Hiroshi Shimamoto <hshimamoto@gmx.com>
Calc TAT

Signed-off-by: Hiroshi Shimamoto <hshimamoto@gmx.com>
Get frequency

Signed-off-by: Hiroshi Shimamoto <hshimamoto@gmx.com>
histgram

Signed-off-by: Hiroshi Shimamoto <hshimamoto@gmx.com>
rate limit

Signed-off-by: Hiroshi Shimamoto <hshimamoto@gmx.com>
prepare to show statistics

Signed-off-by: Hiroshi Shimamoto <hshimamoto@gmx.com>