Improve ETA performance - #165

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CarlOlson wants to merge 3 commits into
npkgz:masterfrom
CarlOlson:eta-performance
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Improve ETA performance#165
CarlOlson wants to merge 3 commits into
npkgz:masterfrom
CarlOlson:eta-performance

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@CarlOlson

@CarlOlsonCarlOlson commented Feb 7, 2026•
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ETA had some noticeable issues when processing large amounts of real world data. Low values of etaBuffer with fast increments cause the ETA to go to zero. High values of etaBuffer cause serious performance issues due to excess allocations. This PR improves the ETA behaviour in both situations.

I've added tests to verify the changes and a benchmark to demonstrate the difference.

Master branch (4x speed):
old-bench

This PR (1x speed):
new-bench

Notice the improved ETA stability and overall performance. Increasing etaBuffer will make the old implementation slower and slower, while the new implementation stays at about the same speed.

BTW It seems the maintainer isn't very active. I would be happy to contribute more to this repo as a contributor.

The repo's code style is very outdated and could use an overhaul, so I'll likely just do a rewrite if this doesn't get merged. (But I think it would be best to improve this repo since it has many users)

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@CarlOlson
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n 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;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} 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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Improve ETA performance - #165
Open
CarlOlson wants to merge 3 commits into
npkgz:masterfrom 
CarlOlson:eta-performance
Open
Improve ETA performance#165
CarlOlson wants to merge 3 commits into
npkgz:masterfrom 
CarlOlson:eta-performance
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@CarlOlson
@CarlOlsonCarlOlson
commented
Feb 7, 2026•

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ETA had some noticeable issues when processing large amounts of real world data. Low values of etaBuffer with fast increments cause the ETA to go to zero. High values of etaBuffer cause serious performance issues due to excess allocations. This PR improves the ETA behaviour in both situations.
I've added tests to verify the changes and a benchmark to demonstrate the difference.
Master branch (4x speed):
old-bench
This PR (1x speed):
new-bench
Notice the improved ETA stability and overall performance. Increasing etaBuffer will make the old implementation slower and slower, while the new implementation stays at about the same speed.
BTW It seems the maintainer isn't very active. I would be happy to contribute more to this repo as a contributor.
The repo's code style is very outdated and could use an overhaul, so I'll likely just do a rewrite if this doesn't get merged. (But I think it would be best to improve this repo since it has many users)
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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('^' + ".*" + '

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Improve ETA performance - #165
Open
CarlOlson wants to merge 3 commits into
npkgz:masterfrom 
CarlOlson:eta-performance
Open
Improve ETA performance#165
CarlOlson wants to merge 3 commits into
npkgz:masterfrom 
CarlOlson:eta-performance
Conversation
@CarlOlson
@CarlOlsonCarlOlson
commented
Feb 7, 2026•

edited

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ETA had some noticeable issues when processing large amounts of real world data. Low values of etaBuffer with fast increments cause the ETA to go to zero. High values of etaBuffer cause serious performance issues due to excess allocations. This PR improves the ETA behaviour in both situations.
I've added tests to verify the changes and a benchmark to demonstrate the difference.
Master branch (4x speed):
old-bench
This PR (1x speed):
new-bench
Notice the improved ETA stability and overall performance. Increasing etaBuffer will make the old implementation slower and slower, while the new implementation stays at about the same speed.
BTW It seems the maintainer isn't very active. I would be happy to contribute more to this repo as a contributor.
The repo's code style is very outdated and could use an overhaul, so I'll likely just do a rewrite if this doesn't get merged. (But I think it would be best to improve this repo since it has many users)
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@CarlOlson

, '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");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
Improve ETA performance - #165
Open
CarlOlson wants to merge 3 commits into
npkgz:masterfrom 
CarlOlson:eta-performance
Open
Improve ETA performance#165
CarlOlson wants to merge 3 commits into
npkgz:masterfrom 
CarlOlson:eta-performance
Conversation
@CarlOlson
@CarlOlsonCarlOlson
commented
Feb 7, 2026•

edited

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ETA had some noticeable issues when processing large amounts of real world data. Low values of etaBuffer with fast increments cause the ETA to go to zero. High values of etaBuffer cause serious performance issues due to excess allocations. This PR improves the ETA behaviour in both situations.
I've added tests to verify the changes and a benchmark to demonstrate the difference.
Master branch (4x speed):
old-bench
This PR (1x speed):
new-bench
Notice the improved ETA stability and overall performance. Increasing etaBuffer will make the old implementation slower and slower, while the new implementation stays at about the same speed.
BTW It seems the maintainer isn't very active. I would be happy to contribute more to this repo as a contributor.
The repo's code style is very outdated and could use an overhaul, so I'll likely just do a rewrite if this doesn't get merged. (But I think it would be best to improve this repo since it has many users)
Sign up for freeto join this conversation on GitHub.
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@CarlOlson

, '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
Improve ETA performance - #165
Open
CarlOlson wants to merge 3 commits into
npkgz:masterfrom 
CarlOlson:eta-performance
Open
Improve ETA performance#165
CarlOlson wants to merge 3 commits into
npkgz:masterfrom 
CarlOlson:eta-performance
Conversation
@CarlOlson
@CarlOlsonCarlOlson
commented
Feb 7, 2026•

edited

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ETA had some noticeable issues when processing large amounts of real world data. Low values of etaBuffer with fast increments cause the ETA to go to zero. High values of etaBuffer cause serious performance issues due to excess allocations. This PR improves the ETA behaviour in both situations.
I've added tests to verify the changes and a benchmark to demonstrate the difference.
Master branch (4x speed):
old-bench
This PR (1x speed):
new-bench
Notice the improved ETA stability and overall performance. Increasing etaBuffer will make the old implementation slower and slower, while the new implementation stays at about the same speed.
BTW It seems the maintainer isn't very active. I would be happy to contribute more to this repo as a contributor.
The repo's code style is very outdated and could use an overhaul, so I'll likely just do a rewrite if this doesn't get merged. (But I think it would be best to improve this repo since it has many users)
Sign up for freeto join this conversation on GitHub.
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Successfully merging this pull request may close these issues.

1 participant

@CarlOlson

, '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
Improve ETA performance - #165
Open
CarlOlson wants to merge 3 commits into
npkgz:masterfrom 
CarlOlson:eta-performance
Open
Improve ETA performance#165
CarlOlson wants to merge 3 commits into
npkgz:masterfrom 
CarlOlson:eta-performance
Conversation
@CarlOlson
@CarlOlsonCarlOlson
commented
Feb 7, 2026•

edited

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ETA had some noticeable issues when processing large amounts of real world data. Low values of etaBuffer with fast increments cause the ETA to go to zero. High values of etaBuffer cause serious performance issues due to excess allocations. This PR improves the ETA behaviour in both situations.
I've added tests to verify the changes and a benchmark to demonstrate the difference.
Master branch (4x speed):
old-bench
This PR (1x speed):
new-bench
Notice the improved ETA stability and overall performance. Increasing etaBuffer will make the old implementation slower and slower, while the new implementation stays at about the same speed.
BTW It seems the maintainer isn't very active. I would be happy to contribute more to this repo as a contributor.
The repo's code style is very outdated and could use an overhaul, so I'll likely just do a rewrite if this doesn't get merged. (But I think it would be best to improve this repo since it has many users)
Sign up for freeto join this conversation on GitHub.
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1 participant

@CarlOlson

, '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
Improve ETA performance - #165
Open
CarlOlson wants to merge 3 commits into
npkgz:masterfrom 
CarlOlson:eta-performance
Open
Improve ETA performance#165
CarlOlson wants to merge 3 commits into
npkgz:masterfrom 
CarlOlson:eta-performance
Conversation
@CarlOlson
@CarlOlsonCarlOlson
commented
Feb 7, 2026•

edited

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ETA had some noticeable issues when processing large amounts of real world data. Low values of etaBuffer with fast increments cause the ETA to go to zero. High values of etaBuffer cause serious performance issues due to excess allocations. This PR improves the ETA behaviour in both situations.
I've added tests to verify the changes and a benchmark to demonstrate the difference.
Master branch (4x speed):
old-bench
This PR (1x speed):
new-bench
Notice the improved ETA stability and overall performance. Increasing etaBuffer will make the old implementation slower and slower, while the new implementation stays at about the same speed.
BTW It seems the maintainer isn't very active. I would be happy to contribute more to this repo as a contributor.
The repo's code style is very outdated and could use an overhaul, so I'll likely just do a rewrite if this doesn't get merged. (But I think it would be best to improve this repo since it has many users)
Sign up for freeto join this conversation on GitHub.
Already have an account?
Sign in to comment

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Successfully merging this pull request may close these issues.

1 participant

@CarlOlson

, '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); }
})();
})();

Skip to content
Improve ETA performance - #165
Open
CarlOlson wants to merge 3 commits into
npkgz:masterfrom 
CarlOlson:eta-performance
Open
Improve ETA performance#165
CarlOlson wants to merge 3 commits into
npkgz:masterfrom 
CarlOlson:eta-performance
Conversation
@CarlOlson
@CarlOlsonCarlOlson
commented
Feb 7, 2026•

edited

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ETA had some noticeable issues when processing large amounts of real world data. Low values of etaBuffer with fast increments cause the ETA to go to zero. High values of etaBuffer cause serious performance issues due to excess allocations. This PR improves the ETA behaviour in both situations.
I've added tests to verify the changes and a benchmark to demonstrate the difference.
Master branch (4x speed):
old-bench
This PR (1x speed):
new-bench
Notice the improved ETA stability and overall performance. Increasing etaBuffer will make the old implementation slower and slower, while the new implementation stays at about the same speed.
BTW It seems the maintainer isn't very active. I would be happy to contribute more to this repo as a contributor.
The repo's code style is very outdated and could use an overhaul, so I'll likely just do a rewrite if this doesn't get merged. (But I think it would be best to improve this repo since it has many users)
Sign up for freeto join this conversation on GitHub.
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1 participant

@CarlOlson