Optimized Speculative Execution to Improve Performance of MapReduce Jobs on Virtualized Computing Environment

Table 1

System-level workload considered in this paper.

System-level; workload	Meaning
cpuutil	Average CPU utilization
memutil	Average memory utilization
rps	Average number of read operations per second
wps	Average number of write operations per second
await	Average waiting time of the I/O operations
svctm	Average time spent for the request in the disk device