From df832576932cd3f8dc8e966670eb171353242680 Mon Sep 17 00:00:00 2001 From: Andres Freund Date: Mon, 7 Aug 2023 16:56:29 -0700 Subject: [PATCH v3 09/10] ci: windows: Disabling write cache flushing during test This has been measured to reduce windows test times by about 30s. --- .cirrus.tasks.yml | 6 ++++++ src/tools/ci/windows_write_cache.ps1 | 20 ++++++++++++++++++++ 2 files changed, 26 insertions(+) create mode 100644 src/tools/ci/windows_write_cache.ps1 diff --git a/.cirrus.tasks.yml b/.cirrus.tasks.yml index d1730ce08a8..360b1c775fd 100644 --- a/.cirrus.tasks.yml +++ b/.cirrus.tasks.yml @@ -547,6 +547,12 @@ task: setup_additional_packages_script: | REM choco install -y --no-progress ... + # Define the write cache to be power protected. This reduces the rate of + # cache flushes, which seems to help metadata heavy workloads on NTFS. We're + # just testing here anyway, so ... + change_write_caching_script: + - powershell src/tools/ci/windows_write_cache.ps1 2>&1 + setup_hosts_file_script: | echo 127.0.0.1 pg-loadbalancetest >> c:\Windows\System32\Drivers\etc\hosts echo 127.0.0.2 pg-loadbalancetest >> c:\Windows\System32\Drivers\etc\hosts diff --git a/src/tools/ci/windows_write_cache.ps1 b/src/tools/ci/windows_write_cache.ps1 new file mode 100644 index 00000000000..5c67b3ce54b --- /dev/null +++ b/src/tools/ci/windows_write_cache.ps1 @@ -0,0 +1,20 @@ +# Define the write cache to be power protected. This reduces the rate of cache +# flushes, which seems to help metadata heavy workloads on NTFS. We're just +# testing here anyway, so ... +# +# Let's do so for all disks, this could be useful beyond cirrus-ci. + +Set-Location "HKLM:/SYSTEM/CurrentControlSet/Enum/SCSI"; + +Get-ChildItem -Path "*/*" | foreach-object { + Push-Location; + cd /$_; + pwd; + cd 'Device Parameters'; + if (!(Test-Path -Path "Disk")) { + New-Item -Path "Disk"; + } + + Set-ItemProperty -Path Disk -Type DWord -name CacheIsPowerProtected -Value 1; + Pop-Location; +} -- 2.38.0