• Anurag Sharma
• Dr. Jitendra Agrawal

Due to the rapid growth of computers and high performance demand by users, single core processors are being replaced by multicore processors. Multicore processors are gaining popularity day by day as they contain two or more cores, placed on the single chip, enabling execution of multiple tasks present in the system. The distribution of these tasks across multiple cores such that the cores are equally utilized, is referred to as load balancing. In order to efficiently utilize the processing cores and to improve system performance, it is important to optimize the existing load balancing algorithms used by operating systems. Existing load balancer of Linux assigns an equal number of tasks to each core. Despite this, load imbalance problem remains because the CPU usage of tasks may vary and size and type of processes may be different and hence workload gets imbalanced in very less time, requiring the load balancing to be done frequently. Therefore, the Linux load balancer performs task migration dynamically, from one core to another core in order to maintain the load balance across the cores, however, this task migration results in an overhead. Thus to minimize the overhead of task migration, the assignment of the task should be based on the type and size of the processes. To improve the system performance, therefore, a new load balancing approach is proposed. In this approach, an Average Load Balancer (ALB) balances the load among cores on the basis of type and size of the process i.e. weight of the tasks. Due to Average Load Balancer the frequency of invoking load balancer gets reduced and thus the system performance is improved. The various tests are performed for single and multiple workload by Phoronix-test-suite tool. The results show that the ALB improves the performance on an average by approx 8% in terms of MIPS and approx 5% in terms of execution time as compared to the existing load balancer.

Multi-core Processors, Load Balancing, Aver- age weight

"Enhanced Linux Load Balancer for Multi-core Processors on the basis of Average Weight of Tasks", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 9, page no.740-743, September-2018, Available :http://www.jetir.org/papers/JETIR1809753.pdf

"Enhanced Linux Load Balancer for Multi-core Processors on the basis of Average Weight of Tasks", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 9, page no. pp740-743, September-2018, Available at : http://www.jetir.org/papers/JETIR1809753.pdf