foreach (var traceListener in
        Trace.Listeners.Cast<TraceListener>().Where(traceListener => traceListener.Name == "AzureDiagnostics"))
        traceListener.TraceOutputOptions = TraceOptions.DateTime | TraceOptions.Callstack | TraceOptions.LogicalOperationStack | TraceOptions.ProcessId | TraceOptions.ThreadId | TraceOptions.Timestamp;

<system.diagnostics>
    <trace>
      <listeners>
        <add type="Microsoft.WindowsAzure.Diagnostics.DiagnosticMonitorTraceListener, Microsoft.WindowsAzure.Diagnostics, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" name="AzureDiagnostics" traceOutputOptions="DateTime,Timestamp,Callstack,LogicalOperationStack,ProcessId,ThreadId">
        </add>
      </listeners>
    </trace>
  </system.diagnostics>

Trace.TraceInformation("Thread is sleeping for {0} seconds", CurrentThreadSleepInSeconds);

[WorkerRole.exe] Thread is sleeping for 4 seconds