Merge pull request #14045 from heejaechang/remotehostPriority

set roslyn service hub process to have below normal process priority

src/Workspaces/Remote/ServiceHub/Services/RemoteHostService.cs

@@ -2,6 +2,7 @@
 
 using System;
 using System.Collections.Generic;
+using System.Diagnostics;
 using System.IO;
 using System.Threading;
 using System.Threading.Tasks;
@@ -31,6 +32,11 @@ static RemoteHostService()
             // this is the very first service which will be called from client (VS)
             // we set up logger here
             RoslynLogger.SetLogger(new EtwLogger(GetLoggingChecker()));
+
+            // Set this process's priority BelowNormal.
+            // this should let us to freely try to use all resources possible without worrying about affecting
+            // host's work such as responsiveness or build.
+            Process.GetCurrentProcess().PriorityClass = ProcessPriorityClass.BelowNormal;
         }
 
         public RemoteHostService(Stream stream, IServiceProvider serviceProvider) :