From 9364062300ec882ce4142b0f5765306d4550260c Mon Sep 17 00:00:00 2001
From: Aleksandr Chebotov <47745270+al-cheb@users.noreply.github.com>
Date: Thu, 30 Jul 2020 09:56:11 +0300
Subject: [PATCH] [Windows] .NET Framework  Performance Issue (#1316)

* ngen KB2570538

* suppress ngen log output
---
 images/win/Windows2019-Azure.json          | 6 ++++++
 images/win/scripts/Installers/Run-NGen.ps1 | 6 ++++++
 2 files changed, 12 insertions(+)
 create mode 100644 images/win/scripts/Installers/Run-NGen.ps1

diff --git a/images/win/Windows2019-Azure.json b/images/win/Windows2019-Azure.json
index 431d1af29..f7f414f3f 100644
--- a/images/win/Windows2019-Azure.json
+++ b/images/win/Windows2019-Azure.json
@@ -771,6 +771,12 @@
                 "{{ template_dir }}/scripts/Installers/Disable-JITDebugger.ps1"
             ]
         },
+        {
+            "type": "powershell",
+            "scripts":[
+                "{{ template_dir }}/scripts/Installers/Run-NGen.ps1"
+            ]
+        },
         {
             "type": "powershell",
             "inline": [
diff --git a/images/win/scripts/Installers/Run-NGen.ps1 b/images/win/scripts/Installers/Run-NGen.ps1
new file mode 100644
index 000000000..c00aa1a4a
--- /dev/null
+++ b/images/win/scripts/Installers/Run-NGen.ps1
@@ -0,0 +1,6 @@
+Write-Host "NGen: Microsoft.PowerShell.Utility.Activities"
+$null = & $env:SystemRoot\Microsoft.NET\Framework64\v4.0.30319\ngen.exe install "Microsoft.PowerShell.Utility.Activities, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
+Write-Host "NGen: Framework64"
+$null = & $env:SystemRoot\Microsoft.NET\Framework64\v4.0.30319\ngen.exe update
+Write-Host "NGen: Framework"
+$null = & $env:SystemRoot\Microsoft.NET\Framework\v4.0.30319\ngen.exe update
\ No newline at end of file