Script updates:

- option not to shut down sccache after 10 minutes
- zero sccache stats before running the build
- decrease number of jenkins agents

containers/agent-windows-buildkite/start_agent.ps1

@@ -3,6 +3,7 @@ c:\credentials\buildkite-env.ps1
 iex ((New-Object System.Net.WebClient).DownloadString('https://raw.githubusercontent.com/buildkite/agent/master/install.ps1'))
 
 $env:SCCACHE_DIR="C:\ws\sccache"
+$env:SCCACHE_IDLE_TIMEOUT="0"
 Remove-Item -Recurse -Force -ErrorAction Ignore $env:SCCACHE_DIR
 sccache --start-server
 

kubernetes/jenkins.yaml

@@ -154,7 +154,7 @@ metadata:
   name: agent-debian-testing-ssd
   namespace: jenkins
 spec:
-  replicas: 4
+  replicas: 2
   template:
     metadata:
       labels:

scripts/buildkite/build_branch_pipeline.py

@@ -42,7 +42,7 @@ if __name__ == '__main__':
         'label': ':windows: build and test windows',
         'key': 'windows',
         'commands': [
-            'sccache --show-stats',
+            'sccache --zero-stats',
             'set SRC=%BUILDKITE_BUILD_PATH%/llvm-premerge-checks',
             'rm -rf %SRC%',
             'git clone --depth 1 --branch %scripts_branch% https://github.com/google/llvm-premerge-checks.git %SRC%',

scripts/buildkite/build_master_pipeline.py

@@ -37,7 +37,7 @@ if __name__ == '__main__':
         'label': ':windows: build and test windows',
         'key': 'windows',
         'commands': [
-            'sccache --show-stats',
+            'sccache --zero-stats',
             'set SRC=%BUILDKITE_BUILD_PATH%/llvm-premerge-checks',
             'rm -rf %SRC%',
             'git clone --depth 1 --branch %scripts_branch% https://github.com/google/llvm-premerge-checks.git %SRC%',