International Journal of Computer Applications |
Foundation of Computer Science (FCS), NY, USA |
Volume 183 - Number 36 |
Year of Publication: 2021 |
Authors: Kithinji Joseph, Makau S. Mutua, Gitonga D. Mwathi |
10.5120/ijca2021921746 |
Kithinji Joseph, Makau S. Mutua, Gitonga D. Mwathi . HPDDRR: Optimized Scheduler Shaper for Bandwidth Management and Traffic Shaping in Internet Protocol Storage Area Networks. International Journal of Computer Applications. 183, 36 ( Nov 2021), 20-32. DOI=10.5120/ijca2021921746
Providing QOS (quality of service) is a vital problem in storage area networks. In this paper a technique known as HPDDRR(hierarchical priority based dynamic deficit round robin) which is scheduler shaper that uses hit ration for flow prioritization and a dynamic quantum calculated based on the priority for scheduling is presented. Based on the applications used, packets may vary in sizes and belonging to different priority classes. To ensure that big low priority packets don’t delay small high priority packets this study uses hierarchical priority queues instead of FIFO (first in first out) queues for scheduling. This allows for performance isolation as well as resource sharing. The evaluation results proof that HPDDRR is able to optimize bandwidth utilization as well as latency for competing traffic flows under Service level objectives constraints.