iperf3 client does NOT report cpu_utilization_percent to server

Context

• Version of iperf3: latest master

• Hardware: VirtualBox VM

• Operating system (and distribution, if any): CentOS release 6.4 (Final)

• Other relevant information (for example, non-default compilers, libraries, cross-compiling, etc.): Static native build (./configure --enable-static --disable-shared)

Bug Report

• Expected Behavior: Both client and server JSON have both client and server cpu_utilization_percent

• Actual Behavior: Client JSON contains both host and remote cpu_utilization_percent (working correctly). Server JSON only contains host cpu_utilization_percent (remote is all zeros).

• Steps to Reproduce - Client: ./iperf3 -c localhost -t 1 --json > /tmp/iperfc.master.json

# cat /tmp/iperfc.master.json | grep 'cpu_util' -A 7
		"cpu_utilization_percent":	{
			"host_total":	32.868187611614886,
			"host_user":	5.842320347964546,
			"host_system":	28.025060167043431,
			"remote_total":	20.288637666431178,
			"remote_user":	3.1487965658301182,
			"remote_system":	17.439537588637879
		}

• Steps to Reproduce - Server: ./iperf3 -s -1 --json > /tmp/iperfs.master.json

# cat /tmp/iperfs.master.json | grep 'cpu_util' -A 7
		"cpu_utilization_percent":	{
			"host_total":	20.288637666431178,
			"host_user":	3.1487965658301182,
			"host_system":	17.439537588637879,
			"remote_total":	0,
			"remote_user":	0,
			"remote_system":	0
		}

• Possible Solution: Add cpu_utilization_percent from client in server JSON output.