Enabling Developer dashboard not returning any data

HI,

I have enabled the Developer dashboard using powershell as below. (Usage and Health data collection is enabled in service application).

$svc = [Microsoft.SharePoint.Administration.SPWebService]::ContentService
$dds = $svc.DeveloperDashboardSettings
$dds.DisplayLevel = "OnDemand"
$dds.Update()

I can see the Icon on the site. but no data is getting logged. In the "Get-SPServiceApplication", I can see the service application. How to see data in developer dashboard? I am using publishing site, which has a custom master page.

Thanks