traffic get stuck for some seconds

I got the x86 system i got some issues with while traffic flow its doesn’t continiously and get stuck for some seconds and as well it stop real graffing too.. what might be cause behind it?
i got simple queue on it to manage b/w. i’ve attached to snap of my interface and vlan interface too.

regards
Srijan
int.JPG

Are you sure, the traffic is really stopping for a moment??

I can see this graph “leak” on my very far devices too, but the traffic is not missing any packet, only the graph.

what are the best way to manage b/w for dedicated and shared client ? is it possible with simple queue or some thing else…
help me in this matter.

give leaf with limit-at to the dedicated customer in a queue tree that has other leafs for the other clients and manages all traffic,

read this http://wiki.mikrotik.com/wiki/NetworkPro_on_Quality_of_Service and ask here if it leaves unanswered questions

do not worry about the holes in the WinBox graphs - those are separate from the actual traffic itself, as you can verify with ping etc