客户端调用wcf服务，如何提高调用性能

/// <summary>
/// IO服务通道
/// by:jgl
/// date:15-10-10
/// </summary>
public sealed class EmpIOChannelFacotry
{
private static readonly object LockObject = new object();
private static StreamServiceClient client;

public static StreamServiceClient Channel
{
get
{
lock (LockObject)
{
var locaClient = client;
if (locaClient != null && locaClient.State != CommunicationState.Faulted) return locaClient;
client = new StreamServiceClient();
return client;
}
}
set
{
lock (LockObject)
{
if (client == null) return;
if (client.State != CommunicationState.Opened)
client.Abort();
client.Close();
client = value;
}
}
}
}