perf: clear vfs audit_cache before each run
When generating a stream clone, we spend a large amount of time auditing path.
Before this changes, the first run was warming the vfs cache for the other
runs, leading to a large runtime difference and a "faulty" reported timing for
the operation.
We now clear this important cache between run to get a more realistic timing.
Below are some example of median time change when clearing these cases. The
maximum time for a run did not changed significantly.
### data-env-vars.name = mozilla-central-2018-08-01-zstd-sparse-revlog
# benchmark.name = hg.perf.exchange.stream.generate
# bin-env-vars.hg.flavor = default
# bin-env-vars.hg.py-re2-module = default
# benchmark.variants.version = latest
no-clearing: 17.289905
cache-clearing: 21.587965 (+24.86%, +4.30)
## data-env-vars.name = mozilla-central-2024-03-22-zstd-sparse-revlog
no-clearing: 32.670748
cache-clearing: 40.467095 (+23.86%, +7.80)
## data-env-vars.name = mozilla-try-2019-02-18-zstd-sparse-revlog
no-clearing: 37.838858
cache-clearing: 46.072749 (+21.76%, +8.23)
## data-env-vars.name = mozilla-unified-2024-03-22-zstd-sparse-revlog
no-clearing: 32.969395
cache-clearing: 39.646209 (+20.25%, +6.68)
In addition, this significantly reduce the timing difference between the
performance command, from the perf extensions and a `real `hg bundle` call
producing a stream bundle. Some significant differences remain especially on
the "mozilla-try" repositories, but they are now smaller.
Note that some of that difference will actually not be
attributable to the stream generation (like maybe phases or branch map
computation).
Below are some benchmarks done on a currently draft changeset fixing some
unrelated slowness in `hg bundle` (34a78972af409d1ff37c29e60f6ca811ad1a457d)
### data-env-vars.name = mozilla-central-2018-08-01-zstd-sparse-revlog
# bin-env-vars.hg.flavor = default
# bin-env-vars.hg.py-re2-module = default
hg.perf.exchange.stream.generate: 21.587965
hg.command.bundle: 24.301799 (+12.57%, +2.71)
## data-env-vars.name = mozilla-central-2024-03-22-zstd-sparse-revlog
hg.perf.exchange.stream.generate: 40.467095
hg.command.bundle: 44.831317 (+10.78%, +4.36)
## data-env-vars.name = mozilla-unified-2024-03-22-zstd-sparse-revlog
hg.perf.exchange.stream.generate: 39.646209
hg.command.bundle: 45.395258 (+14.50%, +5.75)
## data-env-vars.name = mozilla-try-2019-02-18-zstd-sparse-revlog
hg.perf.exchange.stream.generate: 46.072749
hg.command.bundle: 55.882608 (+21.29%, +9.81)
## data-env-vars.name = mozilla-try-2023-03-22-zlib-general-delta
hg.perf.exchange.stream.generate: 334.716708
hg.command.bundle: 377.856767 (+12.89%, +43.14)
## data-env-vars.name = mozilla-try-2023-03-22-zstd-sparse-revlog
hg.perf.exchange.stream.generate: 302.972301
hg.command.bundle: 326.098755 (+7.63%, +23.13)
# install-dependencies.ps1 - Install Windows dependencies for building Mercurial
#
# Copyright 2019 Gregory Szorc <gregory.szorc@gmail.com>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
# This script can be used to bootstrap a Mercurial build environment on
# Windows.
#
# The script makes a lot of assumptions about how things should work.
# For example, the install location of Python is hardcoded to c:\hgdev\*.
#
# The script should be executed from a PowerShell with elevated privileges
# if you don't want to see a UAC prompt for various installers.
#
# The script is tested on Windows 10 and Windows Server 2019 (in EC2).
$VS_BUILD_TOOLS_URL = "https://download.visualstudio.microsoft.com/download/pr/a1603c02-8a66-4b83-b821-811e3610a7c4/aa2db8bb39e0cbd23e9940d8951e0bc3/vs_buildtools.exe"
$VS_BUILD_TOOLS_SHA256 = "911E292B8E6E5F46CBC17003BDCD2D27A70E616E8D5E6E69D5D489A605CAA139"
$PYTHON37_x86_URL = "https://www.python.org/ftp/python/3.7.9/python-3.7.9.exe"
$PYTHON37_x86_SHA256 = "769bb7c74ad1df6d7d74071cc16a984ff6182e4016e11b8949b93db487977220"
$PYTHON37_X64_URL = "https://www.python.org/ftp/python/3.7.9/python-3.7.9-amd64.exe"
$PYTHON37_x64_SHA256 = "e69ed52afb5a722e5c56f6c21d594e85c17cb29f12f18bb69751cf1714e0f987"
$PYTHON38_x86_URL = "https://www.python.org/ftp/python/3.8.10/python-3.8.10.exe"
$PYTHON38_x86_SHA256 = "ad07633a1f0cd795f3bf9da33729f662281df196b4567fa795829f3bb38a30ac"
$PYTHON38_x64_URL = "https://www.python.org/ftp/python/3.8.10/python-3.8.10-amd64.exe"
$PYTHON38_x64_SHA256 = "7628244cb53408b50639d2c1287c659f4e29d3dfdb9084b11aed5870c0c6a48a"
$PYTHON39_x86_URL = "https://www.python.org/ftp/python/3.9.12/python-3.9.12.exe"
$PYTHON39_x86_SHA256 = "3d883326f30ac231c06b33f2a8ea700a185c20bf98d01da118079e9134d5fd20"
$PYTHON39_X64_URL = "https://www.python.org/ftp/python/3.9.12/python-3.9.12-amd64.exe"
$PYTHON39_x64_SHA256 = "2ba57ab2281094f78fc0227a27f4d47c90d94094e7cca35ce78419e616b3cb63"
$PYTHON310_x86_URL = "https://www.python.org/ftp/python/3.10.4/python-3.10.4.exe"
$PYTHON310_x86_SHA256 = "97c37c53c7a826f5b00e185754ab2a324a919f7afc469b20764b71715c80041d"
$PYTHON310_X64_URL = "https://www.python.org/ftp/python/3.10.4/python-3.10.4-amd64.exe"
$PYTHON310_x64_SHA256 = "a81fc4180f34e5733c3f15526c668ff55de096366f9006d8a44c0336704e50f1"
# PIP 22.0.4.
$PIP_URL = "https://github.com/pypa/get-pip/raw/38e54e5de07c66e875c11a1ebbdb938854625dd8/public/get-pip.py"
$PIP_SHA256 = "e235c437e5c7d7524fbce3880ca39b917a73dc565e0c813465b7a7a329bb279a"
$INNO_SETUP_URL = "http://files.jrsoftware.org/is/5/innosetup-5.6.1-unicode.exe"
$INNO_SETUP_SHA256 = "27D49E9BC769E9D1B214C153011978DB90DC01C2ACD1DDCD9ED7B3FE3B96B538"
$MINGW_BIN_URL = "https://osdn.net/frs/redir.php?m=constant&f=mingw%2F68260%2Fmingw-get-0.6.3-mingw32-pre-20170905-1-bin.zip"
$MINGW_BIN_SHA256 = "2AB8EFD7C7D1FC8EAF8B2FA4DA4EEF8F3E47768284C021599BC7435839A046DF"
$MERCURIAL_WHEEL_FILENAME = "mercurial-6.1.4-cp39-cp39-win_amd64.whl"
$MERCURIAL_WHEEL_URL = "https://files.pythonhosted.org/packages/82/86/fbcc4b552f6c1bdfdbbc5a68b0896a55ac3c6c0e8baf51394816bdc320bd/$MERCURIAL_WHEEL_FILENAME"
$MERCURIAL_WHEEL_SHA256 = "ab578daec7c21786c668b0da2e71282a290d18010255719f78d0e55145020d46"
$RUSTUP_INIT_URL = "https://static.rust-lang.org/rustup/archive/1.21.1/x86_64-pc-windows-gnu/rustup-init.exe"
$RUSTUP_INIT_SHA256 = "d17df34ba974b9b19cf5c75883a95475aa22ddc364591d75d174090d55711c72"
$PYOXIDIZER_URL = "https://github.com/indygreg/PyOxidizer/releases/download/pyoxidizer%2F0.17/PyOxidizer-0.17.0-x64.msi"
$PYOXIDIZER_SHA256 = "85c3bc21a18eb5e2db4dad87cca29accf725c7d59dd364a853ab5099c272024b"
# Writing progress slows down downloads substantially. So disable it.
$progressPreference = 'silentlyContinue'
function Secure-Download($url, $path, $sha256) {
if (Test-Path -Path $path) {
Get-FileHash -Path $path -Algorithm SHA256 -OutVariable hash
if ($hash.Hash -eq $sha256) {
Write-Output "SHA256 of $path verified as $sha256"
return
}
Write-Output "hash mismatch on $path; downloading again"
}
Write-Output "downloading $url to $path"
Invoke-WebRequest -Uri $url -OutFile $path
Get-FileHash -Path $path -Algorithm SHA256 -OutVariable hash
if ($hash.Hash -ne $sha256) {
Remove-Item -Path $path
throw "hash mismatch when downloading $url; got $($hash.Hash), expected $sha256"
}
}
function Invoke-Process($path, $arguments) {
echo "$path $arguments"
$p = Start-Process -FilePath $path -ArgumentList $arguments -Wait -PassThru -WindowStyle Hidden
if ($p.ExitCode -ne 0) {
# If the MSI is already installed, ignore the error
if ($p.ExitCode -eq 1638) {
Write-Output "program already installed; continuing..."
}
else {
throw "process exited non-0: $($p.ExitCode)"
}
}
}
function Install-Python3($name, $installer, $dest, $pip) {
Write-Output "installing $name"
# We hit this when running the script as part of Simple Systems Manager in
# EC2. The Python 3 installer doesn't seem to like per-user installs
# when running as the SYSTEM user. So enable global installs if executed in
# this mode.
if ($env:USERPROFILE -eq "C:\Windows\system32\config\systemprofile") {
Write-Output "running with SYSTEM account; installing for all users"
$allusers = "1"
}
else {
$allusers = "0"
}
Invoke-Process $installer "/quiet TargetDir=${dest} InstallAllUsers=${allusers} AssociateFiles=0 CompileAll=0 PrependPath=0 Include_doc=0 Include_launcher=0 InstallLauncherAllUsers=0 Include_pip=0 Include_test=0"
Invoke-Process ${dest}\python.exe $pip
}
function Install-Rust($prefix) {
Write-Output "installing Rust"
$Env:RUSTUP_HOME = "${prefix}\rustup"
$Env:CARGO_HOME = "${prefix}\cargo"
Invoke-Process "${prefix}\assets\rustup-init.exe" "-y --default-host x86_64-pc-windows-msvc"
Invoke-Process "${prefix}\cargo\bin\rustup.exe" "target add i686-pc-windows-msvc"
Invoke-Process "${prefix}\cargo\bin\rustup.exe" "install 1.52.0"
Invoke-Process "${prefix}\cargo\bin\rustup.exe" "component add clippy"
}
function Install-Dependencies($prefix) {
if (!(Test-Path -Path $prefix\assets)) {
New-Item -Path $prefix\assets -ItemType Directory
}
$pip = "${prefix}\assets\get-pip.py"
Secure-Download $PYTHON37_x86_URL ${prefix}\assets\python37-x86.exe $PYTHON37_x86_SHA256
Secure-Download $PYTHON37_x64_URL ${prefix}\assets\python37-x64.exe $PYTHON37_x64_SHA256
Secure-Download $PYTHON38_x86_URL ${prefix}\assets\python38-x86.exe $PYTHON38_x86_SHA256
Secure-Download $PYTHON38_x64_URL ${prefix}\assets\python38-x64.exe $PYTHON38_x64_SHA256
Secure-Download $PYTHON39_x86_URL ${prefix}\assets\python39-x86.exe $PYTHON39_x86_SHA256
Secure-Download $PYTHON39_x64_URL ${prefix}\assets\python39-x64.exe $PYTHON39_x64_SHA256
Secure-Download $PYTHON310_x86_URL ${prefix}\assets\python310-x86.exe $PYTHON310_x86_SHA256
Secure-Download $PYTHON310_x64_URL ${prefix}\assets\python310-x64.exe $PYTHON310_x64_SHA256
Secure-Download $PIP_URL ${pip} $PIP_SHA256
Secure-Download $VS_BUILD_TOOLS_URL ${prefix}\assets\vs_buildtools.exe $VS_BUILD_TOOLS_SHA256
Secure-Download $INNO_SETUP_URL ${prefix}\assets\InnoSetup.exe $INNO_SETUP_SHA256
Secure-Download $MINGW_BIN_URL ${prefix}\assets\mingw-get-bin.zip $MINGW_BIN_SHA256
Secure-Download $MERCURIAL_WHEEL_URL ${prefix}\assets\${MERCURIAL_WHEEL_FILENAME} $MERCURIAL_WHEEL_SHA256
Secure-Download $RUSTUP_INIT_URL ${prefix}\assets\rustup-init.exe $RUSTUP_INIT_SHA256
Secure-Download $PYOXIDIZER_URL ${prefix}\assets\PyOxidizer.msi $PYOXIDIZER_SHA256
Install-Python3 "Python 3.7 32-bit" ${prefix}\assets\python37-x86.exe ${prefix}\python37-x86 ${pip}
Install-Python3 "Python 3.7 64-bit" ${prefix}\assets\python37-x64.exe ${prefix}\python37-x64 ${pip}
Install-Python3 "Python 3.8 32-bit" ${prefix}\assets\python38-x86.exe ${prefix}\python38-x86 ${pip}
Install-Python3 "Python 3.8 64-bit" ${prefix}\assets\python38-x64.exe ${prefix}\python38-x64 ${pip}
Install-Python3 "Python 3.9 32-bit" ${prefix}\assets\python39-x86.exe ${prefix}\python39-x86 ${pip}
Install-Python3 "Python 3.9 64-bit" ${prefix}\assets\python39-x64.exe ${prefix}\python39-x64 ${pip}
Install-Python3 "Python 3.10 32-bit" ${prefix}\assets\python310-x86.exe ${prefix}\python310-x86 ${pip}
Install-Python3 "Python 3.10 64-bit" ${prefix}\assets\python310-x64.exe ${prefix}\python310-x64 ${pip}
Write-Output "installing Visual Studio 2017 Build Tools and SDKs"
Invoke-Process ${prefix}\assets\vs_buildtools.exe "--quiet --wait --norestart --nocache --channelUri https://aka.ms/vs/15/release/channel --add Microsoft.VisualStudio.Workload.MSBuildTools --add Microsoft.VisualStudio.Component.Windows10SDK.17763 --add Microsoft.VisualStudio.Workload.VCTools --add Microsoft.VisualStudio.Component.Windows10SDK --add Microsoft.VisualStudio.Component.VC.140"
Write-Output "installing PyOxidizer"
Invoke-Process msiexec.exe "/i ${prefix}\assets\PyOxidizer.msi /l* ${prefix}\assets\PyOxidizer.log /quiet"
Install-Rust ${prefix}
Write-Output "installing Inno Setup"
Invoke-Process ${prefix}\assets\InnoSetup.exe "/SP- /VERYSILENT /SUPPRESSMSGBOXES"
Write-Output "extracting MinGW base archive"
Expand-Archive -Path ${prefix}\assets\mingw-get-bin.zip -DestinationPath "${prefix}\MinGW" -Force
Write-Output "updating MinGW package catalogs"
Invoke-Process ${prefix}\MinGW\bin\mingw-get.exe "update"
Write-Output "installing MinGW packages"
Invoke-Process ${prefix}\MinGW\bin\mingw-get.exe "install msys-base msys-coreutils msys-diffutils msys-unzip"
# Construct a virtualenv useful for bootstrapping. It conveniently contains a
# Mercurial install.
Write-Output "creating bootstrap virtualenv with Mercurial"
Invoke-Process "$prefix\python39-x64\python.exe" "-m venv ${prefix}\venv-bootstrap"
Invoke-Process "${prefix}\venv-bootstrap\Scripts\pip.exe" "install ${prefix}\assets\${MERCURIAL_WHEEL_FILENAME}"
}
function Clone-Mercurial-Repo($prefix, $repo_url, $dest) {
Write-Output "cloning $repo_url to $dest"
# TODO Figure out why CA verification isn't working in EC2 and remove
# --insecure.
Invoke-Process "${prefix}\venv-bootstrap\Scripts\python.exe" "${prefix}\venv-bootstrap\Scripts\hg clone --insecure $repo_url $dest"
# Mark repo as non-publishing by default for convenience.
Add-Content -Path "$dest\.hg\hgrc" -Value "`n[phases]`npublish = false"
}
$prefix = "c:\hgdev"
Install-Dependencies $prefix
Clone-Mercurial-Repo $prefix "https://www.mercurial-scm.org/repo/hg" $prefix\src