build,win: add PGO workload scripts - #63696

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JaneaSystems:mefi-win-pgo-workloads
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build,win: add PGO workload scripts#63696
nodejs-github-bot merged 2 commits into
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JaneaSystems:mefi-win-pgo-workloads

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This PR adds PGO workload scripts to be used for the PGO-enabled build of Node.js, as well as the wrapper script to run all of the workloads and combine all of the profraw files into profdata on Windows. This way, the build becomes a 3-step process:

  • Build the instrumented binary: vcbuild.bat pgo-generate
  • Run workloads and merge profile data: pgo.ps1
  • Build the optimized binary: vcbuild.bat pgo-use

While this was developed primarily for Windows, PGO itself is platform-agnostic, so the workloads should do well on other platforms that support PGO, although some utility scripts for running an instrumented build and getting results should probably be added to make its usage simpler.

I will share the performance differences in the following days, showcasing the improvements with PGO enabled on Windows.

Refs: #61964

@StefanStojanovic
build,win: add PGO workload scripts
0206916
Signed-off-by: StefanStojanovic <stefan.stojanovic@janeasystems.com>
@StefanStojanovicStefanStojanovic added windows Issues and PRs related to the Windows platform. build Issues and PRs related to Node.js builds or CI infrastructure. labels Jun 1, 2026
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Pinging @nodejs/build for visibility (@nodejs/platform-windows too).

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Here are the performance improvements calculated based on running the benchmarks from the Node.js repository. https://github.com/JaneaSystems/node-pgo-perf

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CI: https://ci.nodejs.org/job/node-test-pull-request/76004/

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aduh95 pushed a commit that referenced this pull request Aug 25, 2026
@StefanStojanovic@aduh95
build,win: add PGO workload scripts
8a744b2
Signed-off-by: StefanStojanovic <stefan.stojanovic@janeasystems.com>
PR-URL: #63696
Refs: #61964
Reviewed-By: Richard Lau <richard.lau@ibm.com>
aduh95 pushed a commit that referenced this pull request Aug 25, 2026
@StefanStojanovic@aduh95
build,win: add PGO workload scripts
1a4f5e5
Signed-off-by: StefanStojanovic <stefan.stojanovic@janeasystems.com>
PR-URL: #63696
Refs: #61964
Reviewed-By: Richard Lau <richard.lau@ibm.com>
@github-actionsgithub-actionsBot mentioned this pull request Aug 25, 2026
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aduh95 pushed a commit that referenced this pull request Aug 27, 2026
@StefanStojanovic@aduh95
build,win: add PGO workload scripts
07c0921
Signed-off-by: StefanStojanovic <stefan.stojanovic@janeasystems.com>
PR-URL: #63696
Refs: #61964
Reviewed-By: Richard Lau <richard.lau@ibm.com>
@zeexzeexzeexzeex mentioned this pull request Aug 31, 2026
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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
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}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

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build,win: add PGO workload scripts - #63696
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JaneaSystems:mefi-win-pgo-workloads
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build,win: add PGO workload scripts#63696
nodejs-github-bot merged 2 commits into
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JaneaSystems:mefi-win-pgo-workloads
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This PR adds PGO workload scripts to be used for the PGO-enabled build of Node.js, as well as the wrapper script to run all of the workloads and combine all of the profraw files into profdata on Windows. This way, the build becomes a 3-step process:
  • Build the instrumented binary: vcbuild.bat pgo-generate
  • Run workloads and merge profile data: pgo.ps1
  • Build the optimized binary: vcbuild.bat pgo-use
While this was developed primarily for Windows, PGO itself is platform-agnostic, so the workloads should do well on other platforms that support PGO, although some utility scripts for running an instrumented build and getting results should probably be added to make its usage simpler.
I will share the performance differences in the following days, showcasing the improvements with PGO enabled on Windows.
Refs: #61964
@StefanStojanovic
build,win: add PGO workload scripts
0206916
Signed-off-by: StefanStojanovic <stefan.stojanovic@janeasystems.com>
@StefanStojanovicStefanStojanovic
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Pinging @nodejs/build for visibility (@nodejs/platform-windows too).
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Here are the performance improvements calculated based on running the benchmarks from the Node.js repository. https://github.com/JaneaSystems/node-pgo-perf
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@StefanStojanovic@aduh95
build,win: add PGO workload scripts
8a744b2
Signed-off-by: StefanStojanovic <stefan.stojanovic@janeasystems.com>
PR-URL: #63696
Refs: #61964
Reviewed-By: Richard Lau <richard.lau@ibm.com>
aduh95 pushed a commit
that referenced
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Aug 25, 2026
@StefanStojanovic@aduh95
build,win: add PGO workload scripts
1a4f5e5
Signed-off-by: StefanStojanovic <stefan.stojanovic@janeasystems.com>
PR-URL: #63696
Refs: #61964
Reviewed-By: Richard Lau <richard.lau@ibm.com>
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@StefanStojanovic@aduh95
build,win: add PGO workload scripts
07c0921
Signed-off-by: StefanStojanovic <stefan.stojanovic@janeasystems.com>
PR-URL: #63696
Refs: #61964
Reviewed-By: Richard Lau <richard.lau@ibm.com>
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
build,win: add PGO workload scripts - #63696
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nodejs-github-bot merged 2 commits into
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JaneaSystems:mefi-win-pgo-workloads
Aug 20, 2026
Merged
build,win: add PGO workload scripts#63696
nodejs-github-bot merged 2 commits into
nodejs:mainfrom 
JaneaSystems:mefi-win-pgo-workloads
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@StefanStojanovic
@StefanStojanovicStefanStojanovic
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This PR adds PGO workload scripts to be used for the PGO-enabled build of Node.js, as well as the wrapper script to run all of the workloads and combine all of the profraw files into profdata on Windows. This way, the build becomes a 3-step process:
  • Build the instrumented binary: vcbuild.bat pgo-generate
  • Run workloads and merge profile data: pgo.ps1
  • Build the optimized binary: vcbuild.bat pgo-use
While this was developed primarily for Windows, PGO itself is platform-agnostic, so the workloads should do well on other platforms that support PGO, although some utility scripts for running an instrumented build and getting results should probably be added to make its usage simpler.
I will share the performance differences in the following days, showcasing the improvements with PGO enabled on Windows.
Refs: #61964
@StefanStojanovic
build,win: add PGO workload scripts
0206916
Signed-off-by: StefanStojanovic <stefan.stojanovic@janeasystems.com>
@StefanStojanovicStefanStojanovic
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Pinging @nodejs/build for visibility (@nodejs/platform-windows too).
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Here are the performance improvements calculated based on running the benchmarks from the Node.js repository. https://github.com/JaneaSystems/node-pgo-perf
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@StefanStojanovic@aduh95
build,win: add PGO workload scripts
8a744b2
Signed-off-by: StefanStojanovic <stefan.stojanovic@janeasystems.com>
PR-URL: #63696
Refs: #61964
Reviewed-By: Richard Lau <richard.lau@ibm.com>
aduh95 pushed a commit
that referenced
this pull request
Aug 25, 2026
@StefanStojanovic@aduh95
build,win: add PGO workload scripts
1a4f5e5
Signed-off-by: StefanStojanovic <stefan.stojanovic@janeasystems.com>
PR-URL: #63696
Refs: #61964
Reviewed-By: Richard Lau <richard.lau@ibm.com>
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aduh95 pushed a commit
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@StefanStojanovic@aduh95
build,win: add PGO workload scripts
07c0921
Signed-off-by: StefanStojanovic <stefan.stojanovic@janeasystems.com>
PR-URL: #63696
Refs: #61964
Reviewed-By: Richard Lau <richard.lau@ibm.com>
@zeexzeexzeexzeex
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
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})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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JaneaSystems:mefi-win-pgo-workloads
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nodejs-github-bot merged 2 commits into
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This PR adds PGO workload scripts to be used for the PGO-enabled build of Node.js, as well as the wrapper script to run all of the workloads and combine all of the profraw files into profdata on Windows. This way, the build becomes a 3-step process:
  • Build the instrumented binary: vcbuild.bat pgo-generate
  • Run workloads and merge profile data: pgo.ps1
  • Build the optimized binary: vcbuild.bat pgo-use
While this was developed primarily for Windows, PGO itself is platform-agnostic, so the workloads should do well on other platforms that support PGO, although some utility scripts for running an instrumented build and getting results should probably be added to make its usage simpler.
I will share the performance differences in the following days, showcasing the improvements with PGO enabled on Windows.
Refs: #61964
@StefanStojanovic
build,win: add PGO workload scripts
0206916
Signed-off-by: StefanStojanovic <stefan.stojanovic@janeasystems.com>
@StefanStojanovicStefanStojanovic
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Pinging @nodejs/build for visibility (@nodejs/platform-windows too).
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Here are the performance improvements calculated based on running the benchmarks from the Node.js repository. https://github.com/JaneaSystems/node-pgo-perf
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@StefanStojanovic@aduh95
build,win: add PGO workload scripts
8a744b2
Signed-off-by: StefanStojanovic <stefan.stojanovic@janeasystems.com>
PR-URL: #63696
Refs: #61964
Reviewed-By: Richard Lau <richard.lau@ibm.com>
aduh95 pushed a commit
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@StefanStojanovic@aduh95
build,win: add PGO workload scripts
1a4f5e5
Signed-off-by: StefanStojanovic <stefan.stojanovic@janeasystems.com>
PR-URL: #63696
Refs: #61964
Reviewed-By: Richard Lau <richard.lau@ibm.com>
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@StefanStojanovic@aduh95
build,win: add PGO workload scripts
07c0921
Signed-off-by: StefanStojanovic <stefan.stojanovic@janeasystems.com>
PR-URL: #63696
Refs: #61964
Reviewed-By: Richard Lau <richard.lau@ibm.com>
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@StefanStojanovic@nodejs-github-bot@richardlau@joyeecheung

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

Skip to content
build,win: add PGO workload scripts - #63696
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nodejs-github-bot merged 2 commits into
nodejs:mainfrom 
JaneaSystems:mefi-win-pgo-workloads
Aug 20, 2026
Merged
build,win: add PGO workload scripts#63696
nodejs-github-bot merged 2 commits into
nodejs:mainfrom 
JaneaSystems:mefi-win-pgo-workloads
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This PR adds PGO workload scripts to be used for the PGO-enabled build of Node.js, as well as the wrapper script to run all of the workloads and combine all of the profraw files into profdata on Windows. This way, the build becomes a 3-step process:
  • Build the instrumented binary: vcbuild.bat pgo-generate
  • Run workloads and merge profile data: pgo.ps1
  • Build the optimized binary: vcbuild.bat pgo-use
While this was developed primarily for Windows, PGO itself is platform-agnostic, so the workloads should do well on other platforms that support PGO, although some utility scripts for running an instrumented build and getting results should probably be added to make its usage simpler.
I will share the performance differences in the following days, showcasing the improvements with PGO enabled on Windows.
Refs: #61964
@StefanStojanovic
build,win: add PGO workload scripts
0206916
Signed-off-by: StefanStojanovic <stefan.stojanovic@janeasystems.com>
@StefanStojanovicStefanStojanovic
added

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Pinging @nodejs/build for visibility (@nodejs/platform-windows too).
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Here are the performance improvements calculated based on running the benchmarks from the Node.js repository. https://github.com/JaneaSystems/node-pgo-perf
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aduh95 pushed a commit
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Aug 25, 2026
@StefanStojanovic@aduh95
build,win: add PGO workload scripts
8a744b2
Signed-off-by: StefanStojanovic <stefan.stojanovic@janeasystems.com>
PR-URL: #63696
Refs: #61964
Reviewed-By: Richard Lau <richard.lau@ibm.com>
aduh95 pushed a commit
that referenced
this pull request
Aug 25, 2026
@StefanStojanovic@aduh95
build,win: add PGO workload scripts
1a4f5e5
Signed-off-by: StefanStojanovic <stefan.stojanovic@janeasystems.com>
PR-URL: #63696
Refs: #61964
Reviewed-By: Richard Lau <richard.lau@ibm.com>
@github-actionsgithub-actionsBot
mentioned this pull request
Aug 25, 2026
 Merged

aduh95 pushed a commit
that referenced
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Aug 27, 2026
@StefanStojanovic@aduh95
build,win: add PGO workload scripts
07c0921
Signed-off-by: StefanStojanovic <stefan.stojanovic@janeasystems.com>
PR-URL: #63696
Refs: #61964
Reviewed-By: Richard Lau <richard.lau@ibm.com>
@zeexzeexzeexzeex
mentioned this pull request
Aug 31, 2026
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@StefanStojanovic@nodejs-github-bot@richardlau@joyeecheung

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
build,win: add PGO workload scripts - #63696
Merged
nodejs-github-bot merged 2 commits into
nodejs:mainfrom 
JaneaSystems:mefi-win-pgo-workloads
Aug 20, 2026
Merged
build,win: add PGO workload scripts#63696
nodejs-github-bot merged 2 commits into
nodejs:mainfrom 
JaneaSystems:mefi-win-pgo-workloads
Conversation
@StefanStojanovic
@StefanStojanovicStefanStojanovic
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This PR adds PGO workload scripts to be used for the PGO-enabled build of Node.js, as well as the wrapper script to run all of the workloads and combine all of the profraw files into profdata on Windows. This way, the build becomes a 3-step process:
  • Build the instrumented binary: vcbuild.bat pgo-generate
  • Run workloads and merge profile data: pgo.ps1
  • Build the optimized binary: vcbuild.bat pgo-use
While this was developed primarily for Windows, PGO itself is platform-agnostic, so the workloads should do well on other platforms that support PGO, although some utility scripts for running an instrumented build and getting results should probably be added to make its usage simpler.
I will share the performance differences in the following days, showcasing the improvements with PGO enabled on Windows.
Refs: #61964
@StefanStojanovic
build,win: add PGO workload scripts
0206916
Signed-off-by: StefanStojanovic <stefan.stojanovic@janeasystems.com>
@StefanStojanovicStefanStojanovic
added

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@StefanStojanovic
tools: fix linter errors
9ede9e7
Signed-off-by: StefanStojanovic <stefan.stojanovic@janeasystems.com>
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Pinging @nodejs/build for visibility (@nodejs/platform-windows too).
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Here are the performance improvements calculated based on running the benchmarks from the Node.js repository. https://github.com/JaneaSystems/node-pgo-perf
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aduh95 pushed a commit
that referenced
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Aug 25, 2026
@StefanStojanovic@aduh95
build,win: add PGO workload scripts
8a744b2
Signed-off-by: StefanStojanovic <stefan.stojanovic@janeasystems.com>
PR-URL: #63696
Refs: #61964
Reviewed-By: Richard Lau <richard.lau@ibm.com>
aduh95 pushed a commit
that referenced
this pull request
Aug 25, 2026
@StefanStojanovic@aduh95
build,win: add PGO workload scripts
1a4f5e5
Signed-off-by: StefanStojanovic <stefan.stojanovic@janeasystems.com>
PR-URL: #63696
Refs: #61964
Reviewed-By: Richard Lau <richard.lau@ibm.com>
@github-actionsgithub-actionsBot
mentioned this pull request
Aug 25, 2026
 Merged

aduh95 pushed a commit
that referenced
this pull request
Aug 27, 2026
@StefanStojanovic@aduh95
build,win: add PGO workload scripts
07c0921
Signed-off-by: StefanStojanovic <stefan.stojanovic@janeasystems.com>
PR-URL: #63696
Refs: #61964
Reviewed-By: Richard Lau <richard.lau@ibm.com>
@zeexzeexzeexzeex
mentioned this pull request
Aug 31, 2026
 Open

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@StefanStojanovic@nodejs-github-bot@richardlau@joyeecheung

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
build,win: add PGO workload scripts - #63696
Merged
nodejs-github-bot merged 2 commits into
nodejs:mainfrom 
JaneaSystems:mefi-win-pgo-workloads
Aug 20, 2026
Merged
build,win: add PGO workload scripts#63696
nodejs-github-bot merged 2 commits into
nodejs:mainfrom 
JaneaSystems:mefi-win-pgo-workloads
Conversation
@StefanStojanovic
@StefanStojanovicStefanStojanovic
commented
Jun 1, 2026

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This PR adds PGO workload scripts to be used for the PGO-enabled build of Node.js, as well as the wrapper script to run all of the workloads and combine all of the profraw files into profdata on Windows. This way, the build becomes a 3-step process:
  • Build the instrumented binary: vcbuild.bat pgo-generate
  • Run workloads and merge profile data: pgo.ps1
  • Build the optimized binary: vcbuild.bat pgo-use
While this was developed primarily for Windows, PGO itself is platform-agnostic, so the workloads should do well on other platforms that support PGO, although some utility scripts for running an instrumented build and getting results should probably be added to make its usage simpler.
I will share the performance differences in the following days, showcasing the improvements with PGO enabled on Windows.
Refs: #61964
@StefanStojanovic
build,win: add PGO workload scripts
0206916
Signed-off-by: StefanStojanovic <stefan.stojanovic@janeasystems.com>
@StefanStojanovicStefanStojanovic
added

windows
Issues and PRs related to the Windows platform.
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@StefanStojanovic
tools: fix linter errors
9ede9e7
Signed-off-by: StefanStojanovic <stefan.stojanovic@janeasystems.com>
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Pinging @nodejs/build for visibility (@nodejs/platform-windows too).
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Here are the performance improvements calculated based on running the benchmarks from the Node.js repository. https://github.com/JaneaSystems/node-pgo-perf
@richardlaurichardlau
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aduh95 pushed a commit
that referenced
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Aug 25, 2026
@StefanStojanovic@aduh95
build,win: add PGO workload scripts
8a744b2
Signed-off-by: StefanStojanovic <stefan.stojanovic@janeasystems.com>
PR-URL: #63696
Refs: #61964
Reviewed-By: Richard Lau <richard.lau@ibm.com>
aduh95 pushed a commit
that referenced
this pull request
Aug 25, 2026
@StefanStojanovic@aduh95
build,win: add PGO workload scripts
1a4f5e5
Signed-off-by: StefanStojanovic <stefan.stojanovic@janeasystems.com>
PR-URL: #63696
Refs: #61964
Reviewed-By: Richard Lau <richard.lau@ibm.com>
@github-actionsgithub-actionsBot
mentioned this pull request
Aug 25, 2026
 Merged

aduh95 pushed a commit
that referenced
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Aug 27, 2026
@StefanStojanovic@aduh95
build,win: add PGO workload scripts
07c0921
Signed-off-by: StefanStojanovic <stefan.stojanovic@janeasystems.com>
PR-URL: #63696
Refs: #61964
Reviewed-By: Richard Lau <richard.lau@ibm.com>
@zeexzeexzeexzeex
mentioned this pull request
Aug 31, 2026
 Open

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@StefanStojanovic@nodejs-github-bot@richardlau@joyeecheung

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

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build,win: add PGO workload scripts - #63696
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JaneaSystems:mefi-win-pgo-workloads
Aug 20, 2026
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build,win: add PGO workload scripts#63696
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JaneaSystems:mefi-win-pgo-workloads
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@StefanStojanovic
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This PR adds PGO workload scripts to be used for the PGO-enabled build of Node.js, as well as the wrapper script to run all of the workloads and combine all of the profraw files into profdata on Windows. This way, the build becomes a 3-step process:
  • Build the instrumented binary: vcbuild.bat pgo-generate
  • Run workloads and merge profile data: pgo.ps1
  • Build the optimized binary: vcbuild.bat pgo-use
While this was developed primarily for Windows, PGO itself is platform-agnostic, so the workloads should do well on other platforms that support PGO, although some utility scripts for running an instrumented build and getting results should probably be added to make its usage simpler.
I will share the performance differences in the following days, showcasing the improvements with PGO enabled on Windows.
Refs: #61964
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build,win: add PGO workload scripts
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Signed-off-by: StefanStojanovic <stefan.stojanovic@janeasystems.com>
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Pinging @nodejs/build for visibility (@nodejs/platform-windows too).
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Here are the performance improvements calculated based on running the benchmarks from the Node.js repository. https://github.com/JaneaSystems/node-pgo-perf
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CI: https://ci.nodejs.org/job/node-test-pull-request/76004/
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CI: https://ci.nodejs.org/job/node-test-pull-request/76019/
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CI: https://ci.nodejs.org/job/node-test-pull-request/76034/
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build,win: add PGO workload scripts
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Signed-off-by: StefanStojanovic <stefan.stojanovic@janeasystems.com>
PR-URL: #63696
Refs: #61964
Reviewed-By: Richard Lau <richard.lau@ibm.com>
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build,win: add PGO workload scripts
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Signed-off-by: StefanStojanovic <stefan.stojanovic@janeasystems.com>
PR-URL: #63696
Refs: #61964
Reviewed-By: Richard Lau <richard.lau@ibm.com>
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build,win: add PGO workload scripts
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Signed-off-by: StefanStojanovic <stefan.stojanovic@janeasystems.com>
PR-URL: #63696
Refs: #61964
Reviewed-By: Richard Lau <richard.lau@ibm.com>
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