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[MONO] Incorrect timestamp for perf events - #88373

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@saitama951saitama951 commented Jul 4, 2023

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when added support for the debug info records with #85107 ,The perf was not able to map to the jitted-so's on top of the BenchmarkDotNet library.
i.e

5.47% dotnet [unknown] [.] 0x000003ffa1fdc7e6

hence the perf source code annotation fails. on deeper inspection with the perf script logs, we noticed that the fork events and the mmap2 events were out of order. it seems HAVE_CLOCK_GETTIME i.e in configure.ac was removed while cleaning up the older makefile build system. hence returning always 0.
reference commit:- #47758

CC:- @fanyang-mono@vargaz

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Wouldn't be better to put back the configure check ?

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saitama951force-pushed the incorrect_timestamp branch from ce00f42 to f8cb3c7CompareJuly 5, 2023 16:00
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, 'i'); if (__m === '*' || __re.test(location.href)) { // Add copy buttons to all
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(function() {
function addCopyButtons() {
document.querySelectorAll('pre code').forEach(function(codeBlock) {
if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;
codeBlock.parentElement.setAttribute('data-copy-added', 'true');
var btn = document.createElement('button');
btn.textContent = 'Copy';
btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';
btn.onmouseover = function() { this.style.opacity = '1'; };
btn.onmouseout = function() { this.style.opacity = '0.7'; };
btn.onclick = function() {
navigator.clipboard.writeText(codeBlock.textContent).then(function() {
btn.textContent = 'Copied!';
setTimeout(function() { btn.textContent = 'Copy'; }, 1500);
});
};
codeBlock.parentElement.style.position = 'relative';
codeBlock.parentElement.appendChild(btn);
});
}
addCopyButtons();
// Re-run on dynamic content
var observer = new MutationObserver(addCopyButtons);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '
[MONO] Incorrect timestamp for perf events by saitama951 · Pull Request #88373 · dotnet/runtime · GitHub
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[MONO] Incorrect timestamp for perf events - #88373

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when added support for the debug info records with #85107 ,The perf was not able to map to the jitted-so's on top of the BenchmarkDotNet library.
i.e

5.47% dotnet [unknown] [.] 0x000003ffa1fdc7e6

hence the perf source code annotation fails. on deeper inspection with the perf script logs, we noticed that the fork events and the mmap2 events were out of order. it seems HAVE_CLOCK_GETTIME i.e in configure.ac was removed while cleaning up the older makefile build system. hence returning always 0.
reference commit:- #47758

CC:- @fanyang-mono@vargaz

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Wouldn't be better to put back the configure check ?

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, 'i'); if (__m === '*' || __re.test(location.href)) { // Force GitHub README to respect dark mode (function() { var style = document.createElement('style'); style.textContent = ' .markdown-body { color-scheme: dark light; } .markdown-body pre { background: #161b22 !important; } .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; } .markdown-body table th, .markdown-body table td { border-color: #30363d !important; } .markdown-body img { background: #0d1117; } .markdown-body blockquote { border-left-color: #8b949e; } .markdown-body hr { border-color: #30363d; } '; document.head.appendChild(style); })(); } } catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + ' [MONO] Incorrect timestamp for perf events by saitama951 · Pull Request #88373 · dotnet/runtime · GitHub
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when added support for the debug info records with #85107 ,The perf was not able to map to the jitted-so's on top of the BenchmarkDotNet library.
i.e

5.47% dotnet [unknown] [.] 0x000003ffa1fdc7e6

hence the perf source code annotation fails. on deeper inspection with the perf script logs, we noticed that the fork events and the mmap2 events were out of order. it seems HAVE_CLOCK_GETTIME i.e in configure.ac was removed while cleaning up the older makefile build system. hence returning always 0.
reference commit:- #47758

CC:- @fanyang-mono@vargaz

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Wouldn't be better to put back the configure check ?

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saitama951force-pushed the incorrect_timestamp branch from ce00f42 to f8cb3c7CompareJuly 5, 2023 16:00
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, 'i'); if (__m === '*' || __re.test(location.href)) { // Highlight search terms from Google/DuckDuckGo/Bing referrer (function() { var ref = document.referrer; var terms = []; if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) { var url = new URL(ref); var q = url.searchParams.get('q') || url.searchParams.get('p'); if (q) { terms = q.split(/\s+/).filter(function(t) { return t.length > 2; }); } } if (terms.length === 0) return; var style = document.createElement('style'); style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }'; document.head.appendChild(style); function highlight(node) { if (node.nodeType === 3) { // text node var text = node.textContent; var found = false; terms.forEach(function(term) { var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\]\\]/g, '\\') + ')', 'gi'); if (regex.test(text)) { found = true; var frag = document.createDocumentFragment(); var parts = text.split(regex); parts.forEach(function(part, i) { if (i % 2 === 0) { frag.appendChild(document.createTextNode(part)); } else { var span = document.createElement('span'); span.className = 'userscript-highlight'; span.textContent = part; frag.appendChild(span); } }); node.parentNode.replaceChild(frag, node); } }); } else if (node.nodeType === 1 && node.childNodes) { // element var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT']; if (!skipTags.includes(node.tagName)) { Array.from(node.childNodes).forEach(highlight); } } } highlight(document.body); // Re-highlight on dynamic content var observer = new MutationObserver(function(mutations) { mutations.forEach(function(m) { m.addedNodes.forEach(function(node) { if (node.nodeType === 1 || node.nodeType === 3) highlight(node); }); }); }); observer.observe(document.body, { childList: true, subtree: true }); })(); } } catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + ' [MONO] Incorrect timestamp for perf events by saitama951 · Pull Request #88373 · dotnet/runtime · GitHub
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@saitama951saitama951 commented Jul 4, 2023

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when added support for the debug info records with #85107 ,The perf was not able to map to the jitted-so's on top of the BenchmarkDotNet library.
i.e

5.47% dotnet [unknown] [.] 0x000003ffa1fdc7e6

hence the perf source code annotation fails. on deeper inspection with the perf script logs, we noticed that the fork events and the mmap2 events were out of order. it seems HAVE_CLOCK_GETTIME i.e in configure.ac was removed while cleaning up the older makefile build system. hence returning always 0.
reference commit:- #47758

CC:- @fanyang-mono@vargaz

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Wouldn't be better to put back the configure check ?

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saitama951force-pushed the incorrect_timestamp branch from ce00f42 to f8cb3c7CompareJuly 5, 2023 16:00
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, 'i'); if (__m === '*' || __re.test(location.href)) { // Strip utm_, fbclid, gclid, etc. from all links on page (function() { var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content', 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid', 'ref', 'ref_src', 'source', 'medium', 'campaign']; function cleanUrl(url) { try { var u = new URL(url, window.location.origin); var changed = false; trackingParams.forEach(function(p) { if (u.searchParams.has(p)) { u.searchParams.delete(p); changed = true; } }); return changed ? u.toString() : url; } catch (e) { return url; } } function cleanLinks() { document.querySelectorAll('a[href]').forEach(function(a) { var clean = cleanUrl(a.href); if (clean !== a.href) a.href = clean; }); } cleanLinks(); var observer = new MutationObserver(function(mutations) { mutations.forEach(function(m) { m.addedNodes.forEach(function(node) { if (node.nodeType === 1) { if (node.tagName === 'A') cleanLinks(); node.querySelectorAll('a[href]').forEach(function(a) { var clean = cleanUrl(a.href); if (clean !== a.href) a.href = clean; }); } }); }); }); observer.observe(document.body, { childList: true, subtree: true }); })(); } } catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); } })(); (function(){ try { var __m = "youtube.com"; var __re = new RegExp('^' + "youtube\\.com" + ' [MONO] Incorrect timestamp for perf events by saitama951 · Pull Request #88373 · dotnet/runtime · GitHub
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when added support for the debug info records with #85107 ,The perf was not able to map to the jitted-so's on top of the BenchmarkDotNet library.
i.e

5.47% dotnet [unknown] [.] 0x000003ffa1fdc7e6

hence the perf source code annotation fails. on deeper inspection with the perf script logs, we noticed that the fork events and the mmap2 events were out of order. it seems HAVE_CLOCK_GETTIME i.e in configure.ac was removed while cleaning up the older makefile build system. hence returning always 0.
reference commit:- #47758

CC:- @fanyang-mono@vargaz

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Wouldn't be better to put back the configure check ?

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saitama951force-pushed the incorrect_timestamp branch from ce00f42 to f8cb3c7CompareJuly 5, 2023 16:00
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, 'i'); if (__m === '*' || __re.test(location.href)) { // Auto-enable theater mode on YouTube (function() { function tryTheater() { var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]'); if (btn && !btn.classList.contains('activated')) { btn.click(); } } // Try immediately tryTheater(); // Try after navigation (SPA) var lastUrl = location.href; setInterval(function() { if (location.href !== lastUrl) { lastUrl = location.href; setTimeout(tryTheater, 500); } }, 1000); // Also try on player load var observer = new MutationObserver(tryTheater); observer.observe(document.body, { childList: true, subtree: true }); })(); } } catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + ' [MONO] Incorrect timestamp for perf events by saitama951 · Pull Request #88373 · dotnet/runtime · GitHub
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when added support for the debug info records with #85107 ,The perf was not able to map to the jitted-so's on top of the BenchmarkDotNet library.
i.e

5.47% dotnet [unknown] [.] 0x000003ffa1fdc7e6

hence the perf source code annotation fails. on deeper inspection with the perf script logs, we noticed that the fork events and the mmap2 events were out of order. it seems HAVE_CLOCK_GETTIME i.e in configure.ac was removed while cleaning up the older makefile build system. hence returning always 0.
reference commit:- #47758

CC:- @fanyang-mono@vargaz

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Wouldn't be better to put back the configure check ?

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, 'i'); if (__m === '*' || __re.test(location.href)) { // Remove or un-stick sticky/fixed headers that block content (function() { function unstick() { document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) { if (el.style.position === 'fixed' || el.style.position === 'sticky' || getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') { el.style.position = 'static'; el.style.top = 'auto'; el.style.zIndex = 'auto'; } }); } unstick(); var observer = new MutationObserver(unstick); observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] }); })(); } } catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + ' [MONO] Incorrect timestamp for perf events by saitama951 · Pull Request #88373 · dotnet/runtime · GitHub
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when added support for the debug info records with #85107 ,The perf was not able to map to the jitted-so's on top of the BenchmarkDotNet library.
i.e

5.47% dotnet [unknown] [.] 0x000003ffa1fdc7e6

hence the perf source code annotation fails. on deeper inspection with the perf script logs, we noticed that the fork events and the mmap2 events were out of order. it seems HAVE_CLOCK_GETTIME i.e in configure.ac was removed while cleaning up the older makefile build system. hence returning always 0.
reference commit:- #47758

CC:- @fanyang-mono@vargaz

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Wouldn't be better to put back the configure check ?

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saitama951force-pushed the incorrect_timestamp branch from ce00f42 to f8cb3c7CompareJuly 5, 2023 16:00
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, 'i'); if (__m === '*' || __re.test(location.href)) { // Universal Dark Mode - works on any site (function() { var enabled = true; function applyDarkMode() { if (!enabled) return; // Create style element if it doesn't exist var style = document.getElementById('universal-dark-mode-style'); if (!style) { style = document.createElement('style'); style.id = 'universal-dark-mode-style'; document.head.appendChild(style); } // Dark mode CSS - inverts colors but preserves images/video style.textContent = ' /* Invert everything except media */ html { filter: invert(1) hue-rotate(180deg) !important; background: #1a1a2e !important; } /* Restore images, videos, iframes, canvas */ img, video, iframe, canvas, svg, picture, [style*="background-image"] { filter: invert(1) hue-rotate(180deg) !important; } /* Preserve specific elements that should not be inverted */ .no-dark-mode, .no-dark-mode *, [data-theme="light"], [data-theme="light"], .ace_editor, .ace_editor *, .CodeMirror, .CodeMirror *, .monaco-editor, .monaco-editor *, .markdown-body pre, .markdown-body pre *, .highlight, .highlight *, pre code, pre code * { filter: none !important; } /* Fix common UI elements */ .modal, .popup, .dropdown-menu, .tooltip, .popover { filter: invert(1) hue-rotate(180deg) !important; background: #2d2d44 !important; border-color: #444 !important; } /* Scrollbars */ ::-webkit-scrollbar { background: #1a1a2e !important; } ::-webkit-scrollbar-thumb { background: #444 !important; } ::-webkit-scrollbar-thumb:hover { background: #555 !important; } /* Selection */ ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; } ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; } '; } function removeDarkMode() { var style = document.getElementById('universal-dark-mode-style'); if (style) style.remove(); } // Toggle with Alt+Shift+D document.addEventListener('keydown', function(e) { if (e.altKey && e.shiftKey && e.key === 'D') { e.preventDefault(); enabled = !enabled; if (enabled) { applyDarkMode(); console.log('[Universal Dark Mode] Enabled'); } else { removeDarkMode(); console.log('[Universal Dark Mode] Disabled'); } } }); // Apply on load applyDarkMode(); // Re-apply on dynamic content var observer = new MutationObserver(function(mutations) { if (enabled && !document.getElementById('universal-dark-mode-style')) { applyDarkMode(); } }); observer.observe(document.head, { childList: true }); console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle'); })(); } } catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); } })(); })(); [MONO] Incorrect timestamp for perf events by saitama951 · Pull Request #88373 · dotnet/runtime · GitHub
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when added support for the debug info records with #85107 ,The perf was not able to map to the jitted-so's on top of the BenchmarkDotNet library.
i.e

5.47% dotnet [unknown] [.] 0x000003ffa1fdc7e6

hence the perf source code annotation fails. on deeper inspection with the perf script logs, we noticed that the fork events and the mmap2 events were out of order. it seems HAVE_CLOCK_GETTIME i.e in configure.ac was removed while cleaning up the older makefile build system. hence returning always 0.
reference commit:- #47758

CC:- @fanyang-mono@vargaz

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Wouldn't be better to put back the configure check ?

@saitama951
saitama951force-pushed the incorrect_timestamp branch from ce00f42 to f8cb3c7CompareJuly 5, 2023 16:00
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