Update garbage collection settings.

dockerfile.development

@@ -1,4 +1,6 @@
 FROM mcr.microsoft.com/dotnet/sdk:8.0-jammy
 # libgomp needed for thot
 RUN apt update && apt install -y unzip libgomp1 && \
-    curl -sSL https://aka.ms/getvsdbgsh | /bin/sh /dev/stdin -v latest -l /remote_debugger
+    curl -sSL https://aka.ms/getvsdbgsh | /bin/sh /dev/stdin -v latest -l /remote_debugger
+RUN dotnet tool install --global dotnet-counters
+ENV PATH="${PATH}:~/.dotnet/tools"

src/SIL.Machine.AspNetCore/Services/HangfireBuildJob.cs

@@ -56,6 +56,10 @@ CancellationToken cancellationToken
             }
 
             await DoWorkAsync(engineId, buildId, data, buildOptions, @lock, cancellationToken);
+            // actively clear out memory when the job is complete.
+            GC.Collect();
+            GC.WaitForPendingFinalizers();
+            GC.Collect();
         }
         catch (OperationCanceledException)
         {

src/SIL.Machine.AspNetCore/Services/SmtTransferEngineCommitService.cs

@@ -29,6 +29,10 @@ await _stateService.CommitAsync(
                 _engineOptions.CurrentValue.InactiveEngineTimeout,
                 cancellationToken
             );
+            // We've just cleared some things out of memory, so let's do a garbage collection.
+            GC.Collect();
+            GC.WaitForPendingFinalizers();
+            GC.Collect();
         }
         catch (Exception e)
         {

src/SIL.Machine.Serval.EngineServer/runtimeconfig.template.json

@@ -0,0 +1,8 @@
+{
+    "configProperties": {
+        "System.GC.Server": true,
+        "System.GC.Concurrent": true,
+        "System.GC.ConserveMemory": 5,
+        "System.GC.HighMemoryPercent": 80
+    }
+}

src/SIL.Machine.Serval.JobServer/runtimeconfig.template.json

@@ -0,0 +1,8 @@
+{
+    "configProperties": {
+        "System.GC.Server": true,
+        "System.GC.Concurrent": true,
+        "System.GC.ConserveMemory": 5,
+        "System.GC.HighMemoryPercent": 80
+    }
+}