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Slow performance #74

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Open
Slow performance#74

Description

@Stas-Buzunko
Stas-Buzunko
opened on Jan 11, 2024

Used react-native-image-cache ^3.1.0. These are the milliseconds it takes to read from the cache for 6 profile pictures, each around 50KB:

LOG onLoad 298
LOG onLoad 304
LOG onLoad 328
LOG onLoad 318
LOG onLoad 320
LOG onLoad 314
Average 313ms

And here are the same 6 profile pictures using the default Image once they are loaded:

LOG onLoad 187
LOG onLoad 174
LOG onLoad 162
LOG onLoad 151
LOG onLoad 138
LOG onLoad 129
Average 156.83ms

Additionally, there is some time until the default loading animation is replaced with the image, making the whole experience feel slow. I initially thought caching didn't work at all and spent more than an hour debugging. It feels 3-4 times slower than using the default Image once the source is loaded.

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      , 'i'); if (__m === '*' || __re.test(location.href)) { // Add copy buttons to all 
       blocks
(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" + '
Slow performance · Issue #74 · georstat/react-native-image-cache · GitHub
      Skip to content
      Slow performance #74
      Open
      Open
      Slow performance#74
      Description
      @Stas-Buzunko
      Stas-Buzunko
      opened on Jan 11, 2024
      Used react-native-image-cache ^3.1.0. These are the milliseconds it takes to read from the cache for 6 profile pictures, each around 50KB:
      LOG onLoad 298
LOG onLoad 304
LOG onLoad 328
LOG onLoad 318
LOG onLoad 320
LOG onLoad 314
Average 313ms

      And here are the same 6 profile pictures using the default Image once they are loaded:
      LOG onLoad 187
LOG onLoad 174
LOG onLoad 162
LOG onLoad 151
LOG onLoad 138
LOG onLoad 129
Average 156.83ms

      Additionally, there is some time until the default loading animation is replaced with the image, making the whole experience feel slow. I initially thought caching didn't work at all and spent more than an hour debugging. It feels 3-4 times slower than using the default Image once the source is loaded.
      Metadata
      Metadata
      Assignees
      No one assigned
        Labels
        No labels
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        No type
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          No milestone
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          None yet
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          No branches or pull requests
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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('^' + ".*" + '
Slow performance · Issue #74 · georstat/react-native-image-cache · GitHub
          Skip to content
          Slow performance #74
          Open
          Open
          Slow performance#74
          Description
          @Stas-Buzunko
          Stas-Buzunko
          opened on Jan 11, 2024
          Used react-native-image-cache ^3.1.0. These are the milliseconds it takes to read from the cache for 6 profile pictures, each around 50KB:
          LOG onLoad 298
LOG onLoad 304
LOG onLoad 328
LOG onLoad 318
LOG onLoad 320
LOG onLoad 314
Average 313ms

          And here are the same 6 profile pictures using the default Image once they are loaded:
          LOG onLoad 187
LOG onLoad 174
LOG onLoad 162
LOG onLoad 151
LOG onLoad 138
LOG onLoad 129
Average 156.83ms

          Additionally, there is some time until the default loading animation is replaced with the image, making the whole experience feel slow. I initially thought caching didn't work at all and spent more than an hour debugging. It feels 3-4 times slower than using the default Image once the source is loaded.
          Metadata
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          No one assigned
            Labels
            No labels
            No labels
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            No type
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            No projects
              Milestone
              No milestone
              Relationships
              None yet
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              No branches or pull requests
              Issue actions
              
, '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('^' + ".*" + '
Slow performance · Issue #74 · georstat/react-native-image-cache · GitHub
              Skip to content
              Slow performance #74
              Open
              Open
              Slow performance#74
              Description
              @Stas-Buzunko
              Stas-Buzunko
              opened on Jan 11, 2024
              Used react-native-image-cache ^3.1.0. These are the milliseconds it takes to read from the cache for 6 profile pictures, each around 50KB:
              LOG onLoad 298
LOG onLoad 304
LOG onLoad 328
LOG onLoad 318
LOG onLoad 320
LOG onLoad 314
Average 313ms

              And here are the same 6 profile pictures using the default Image once they are loaded:
              LOG onLoad 187
LOG onLoad 174
LOG onLoad 162
LOG onLoad 151
LOG onLoad 138
LOG onLoad 129
Average 156.83ms

              Additionally, there is some time until the default loading animation is replaced with the image, making the whole experience feel slow. I initially thought caching didn't work at all and spent more than an hour debugging. It feels 3-4 times slower than using the default Image once the source is loaded.
              Metadata
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              Assignees
              No one assigned
                Labels
                No labels
                No labels
                Type
                No type
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                No projects
                  Milestone
                  No milestone
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                  None yet
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                  No branches or pull requests
                  Issue actions
                  
, '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" + '
Slow performance · Issue #74 · georstat/react-native-image-cache · GitHub
                  Skip to content
                  Slow performance #74
                  Open
                  Open
                  Slow performance#74
                  Description
                  @Stas-Buzunko
                  Stas-Buzunko
                  opened on Jan 11, 2024
                  Used react-native-image-cache ^3.1.0. These are the milliseconds it takes to read from the cache for 6 profile pictures, each around 50KB:
                  LOG onLoad 298
LOG onLoad 304
LOG onLoad 328
LOG onLoad 318
LOG onLoad 320
LOG onLoad 314
Average 313ms

                  And here are the same 6 profile pictures using the default Image once they are loaded:
                  LOG onLoad 187
LOG onLoad 174
LOG onLoad 162
LOG onLoad 151
LOG onLoad 138
LOG onLoad 129
Average 156.83ms

                  Additionally, there is some time until the default loading animation is replaced with the image, making the whole experience feel slow. I initially thought caching didn't work at all and spent more than an hour debugging. It feels 3-4 times slower than using the default Image once the source is loaded.
                  Metadata
                  Metadata
                  Assignees
                  No one assigned
                    Labels
                    No labels
                    No labels
                    Type
                    No type
                    Projects
                    No projects
                      Milestone
                      No milestone
                      Relationships
                      None yet
                      Development
                      No branches or pull requests
                      Issue actions
                      
, '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('^' + ".*" + '
Slow performance · Issue #74 · georstat/react-native-image-cache · GitHub
                      Skip to content
                      Slow performance #74
                      Open
                      Open
                      Slow performance#74
                      Description
                      @Stas-Buzunko
                      Stas-Buzunko
                      opened on Jan 11, 2024
                      Used react-native-image-cache ^3.1.0. These are the milliseconds it takes to read from the cache for 6 profile pictures, each around 50KB:
                      LOG onLoad 298
LOG onLoad 304
LOG onLoad 328
LOG onLoad 318
LOG onLoad 320
LOG onLoad 314
Average 313ms

                      And here are the same 6 profile pictures using the default Image once they are loaded:
                      LOG onLoad 187
LOG onLoad 174
LOG onLoad 162
LOG onLoad 151
LOG onLoad 138
LOG onLoad 129
Average 156.83ms

                      Additionally, there is some time until the default loading animation is replaced with the image, making the whole experience feel slow. I initially thought caching didn't work at all and spent more than an hour debugging. It feels 3-4 times slower than using the default Image once the source is loaded.
                      Metadata
                      Metadata
                      Assignees
                      No one assigned
                        Labels
                        No labels
                        No labels
                        Type
                        No type
                        Projects
                        No projects
                          Milestone
                          No milestone
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                          None yet
                          Development
                          No branches or pull requests
                          Issue actions
                          
, '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('^' + ".*" + '
Slow performance · Issue #74 · georstat/react-native-image-cache · GitHub
                          Skip to content
                          Slow performance #74
                          Open
                          Open
                          Slow performance#74
                          Description
                          @Stas-Buzunko
                          Stas-Buzunko
                          opened on Jan 11, 2024
                          Used react-native-image-cache ^3.1.0. These are the milliseconds it takes to read from the cache for 6 profile pictures, each around 50KB:
                          LOG onLoad 298
LOG onLoad 304
LOG onLoad 328
LOG onLoad 318
LOG onLoad 320
LOG onLoad 314
Average 313ms

                          And here are the same 6 profile pictures using the default Image once they are loaded:
                          LOG onLoad 187
LOG onLoad 174
LOG onLoad 162
LOG onLoad 151
LOG onLoad 138
LOG onLoad 129
Average 156.83ms

                          Additionally, there is some time until the default loading animation is replaced with the image, making the whole experience feel slow. I initially thought caching didn't work at all and spent more than an hour debugging. It feels 3-4 times slower than using the default Image once the source is loaded.
                          Metadata
                          Metadata
                          Assignees
                          No one assigned
                            Labels
                            No labels
                            No labels
                            Type
                            No type
                            Projects
                            No projects
                              Milestone
                              No milestone
                              Relationships
                              None yet
                              Development
                              No branches or pull requests
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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); }
})();
})();
Slow performance · Issue #74 · georstat/react-native-image-cache · GitHub
                              Skip to content
                              Slow performance #74
                              Open
                              Open
                              Slow performance#74
                              Description
                              @Stas-Buzunko
                              Stas-Buzunko
                              opened on Jan 11, 2024
                              Used react-native-image-cache ^3.1.0. These are the milliseconds it takes to read from the cache for 6 profile pictures, each around 50KB:
                              LOG onLoad 298
LOG onLoad 304
LOG onLoad 328
LOG onLoad 318
LOG onLoad 320
LOG onLoad 314
Average 313ms

                              And here are the same 6 profile pictures using the default Image once they are loaded:
                              LOG onLoad 187
LOG onLoad 174
LOG onLoad 162
LOG onLoad 151
LOG onLoad 138
LOG onLoad 129
Average 156.83ms

                              Additionally, there is some time until the default loading animation is replaced with the image, making the whole experience feel slow. I initially thought caching didn't work at all and spent more than an hour debugging. It feels 3-4 times slower than using the default Image once the source is loaded.
                              Metadata
                              Metadata
                              Assignees
                              No one assigned
                                Labels
                                No labels
                                No labels
                                Type
                                No type
                                Projects
                                No projects
                                  Milestone
                                  No milestone
                                  Relationships
                                  None yet
                                  Development
                                  No branches or pull requests
                                  Issue actions