duration, err := time.ParseDuration(durationStr)
	if err != nil {
		duration = globalNetPerfMinDuration
	}

	if duration < globalNetPerfMinDuration {
		// We need sample size of minimum 10 secs.
		duration = globalNetPerfMinDuration
	}

	duration = duration.Round(time.Second)

	results, err := globalSiteReplicationSys.Netperf(ctx, duration)
	if err != nil {

		haddrs, err := globalDNSCache.LookupHost(ctx, host)
		if err == nil {
			for _, addr := range haddrs {
				addrs.Add(net.JoinHostPort(addr, globalMinioPort))
			}
		} else {
			// Unable to lookup host in 2-secs, let it fail later anyways.
			addrs.Add(globalMinioAddr)
		}
	} else {
		addrs.Add(globalMinioAddr)
	}
	return addrs.ToSlice()
}

var globalLoggerOutput io.WriteCloser