Weird EMFILE error while open files limit is not reached #933

Closed
Closed
Weird EMFILE error while open files limit is not reached#933

Description

@bloodcarter
bloodcarter
opened on Oct 30, 2017
  • Version: v7.2.1
  • Platform: Linux ip-172-31-16-252 4.9.43-17.39.amzn1.x86_64 Update README for help #1 SMP Fri Sep 15 23:39:41 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
  • Subsystem:

I have a nodejs app constantly spawning and stopping child processes and doing fetch requests. After running for some time I am starting getting EMFILE errors:

 Error: getaddrinfo EMFILE www.googleapis.com:443
at Object.exports._errnoException (util.js:1022:11)
at errnoException (dns.js:33:15)
at GetAddrInfoReqWrap.onlookup [as oncomplete] (dns.js:76:26)

After that error immediatedly goes this one:

Error: spawn /home/ec2-user/workspace/memory/cognitive-task/forward-transformer/speech-parser/tomita-linux64 EMFILE
at exports._errnoException (util.js:1022:11)
at Process.ChildProcess._handle.onexit (internal/child_process.js:193:32)
at onErrorNT (internal/child_process.js:359:16)
at _combinedTickCallback (internal/process/next_tick.js:74:11)
at process._tickDomainCallback (internal/process/next_tick.js:122:9)

Command lsof | grep node shows something like this, i.e. max number of opened file descriptor is 80:

.....
node 3577 ec2-user 78u unix 0xffff88007a594400 0t0 10332349 socket
node 3577 ec2-user 79u unix 0xffff88007a597000 0t0 10332235 socket
node 3577 ec2-user 80u unix 0xffff880004719c00 0t0 10332567 socket
......

If I do lsof | grep node | wc -l I yelds no more than 250 in total.

Output of ulimit -a is:

core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
scheduling priority (-e) 0
file size (blocks, -f) unlimited
pending signals (-i) 7936
max locked memory (kbytes, -l) 64
max memory size (kbytes, -m) unlimited
open files (-n) 4096
pipe size (512 bytes, -p) 8
POSIX message queues (bytes, -q) 819200
real-time priority (-r) 0
stack size (kbytes, -s) 8192
cpu time (seconds, -t) unlimited
max user processes (-u) 7936
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited

It shows that I have limit of 4096 file descriptors and I run simultaneously maybe 10.
I have no idea what is going on and how to fix it. I am pretty sure that no one process stucks or something.

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      , 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all \u003cpre\u003e\u003ccode\u003e 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" + '
      Skip to content

      Weird EMFILE error while open files limit is not reached #933

      Closed
      Closed
      Weird EMFILE error while open files limit is not reached#933

      Description

      @bloodcarter
      bloodcarter
      opened on Oct 30, 2017
      • Version: v7.2.1
      • Platform: Linux ip-172-31-16-252 4.9.43-17.39.amzn1.x86_64 Update README for help #1 SMP Fri Sep 15 23:39:41 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
      • Subsystem:

      I have a nodejs app constantly spawning and stopping child processes and doing fetch requests. After running for some time I am starting getting EMFILE errors:

       Error: getaddrinfo EMFILE www.googleapis.com:443
at Object.exports._errnoException (util.js:1022:11)
at errnoException (dns.js:33:15)
at GetAddrInfoReqWrap.onlookup [as oncomplete] (dns.js:76:26)

      After that error immediatedly goes this one:

      Error: spawn /home/ec2-user/workspace/memory/cognitive-task/forward-transformer/speech-parser/tomita-linux64 EMFILE
at exports._errnoException (util.js:1022:11)
at Process.ChildProcess._handle.onexit (internal/child_process.js:193:32)
at onErrorNT (internal/child_process.js:359:16)
at _combinedTickCallback (internal/process/next_tick.js:74:11)
at process._tickDomainCallback (internal/process/next_tick.js:122:9)

      Command lsof | grep node shows something like this, i.e. max number of opened file descriptor is 80:

      .....
node 3577 ec2-user 78u unix 0xffff88007a594400 0t0 10332349 socket
node 3577 ec2-user 79u unix 0xffff88007a597000 0t0 10332235 socket
node 3577 ec2-user 80u unix 0xffff880004719c00 0t0 10332567 socket
......

      If I do lsof | grep node | wc -l I yelds no more than 250 in total.

      Output of ulimit -a is:

      core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
scheduling priority (-e) 0
file size (blocks, -f) unlimited
pending signals (-i) 7936
max locked memory (kbytes, -l) 64
max memory size (kbytes, -m) unlimited
open files (-n) 4096
pipe size (512 bytes, -p) 8
POSIX message queues (bytes, -q) 819200
real-time priority (-r) 0
stack size (kbytes, -s) 8192
cpu time (seconds, -t) unlimited
max user processes (-u) 7936
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited

      It shows that I have limit of 4096 file descriptors and I run simultaneously maybe 10.
      I have no idea what is going on and how to fix it. I am pretty sure that no one process stucks or something.

      Activity

      Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

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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

          Weird EMFILE error while open files limit is not reached #933

          Closed
          Closed
          Weird EMFILE error while open files limit is not reached#933

          Description

          @bloodcarter
          bloodcarter
          opened on Oct 30, 2017
          • Version: v7.2.1
          • Platform: Linux ip-172-31-16-252 4.9.43-17.39.amzn1.x86_64 Update README for help #1 SMP Fri Sep 15 23:39:41 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
          • Subsystem:

          I have a nodejs app constantly spawning and stopping child processes and doing fetch requests. After running for some time I am starting getting EMFILE errors:

           Error: getaddrinfo EMFILE www.googleapis.com:443
at Object.exports._errnoException (util.js:1022:11)
at errnoException (dns.js:33:15)
at GetAddrInfoReqWrap.onlookup [as oncomplete] (dns.js:76:26)

          After that error immediatedly goes this one:

          Error: spawn /home/ec2-user/workspace/memory/cognitive-task/forward-transformer/speech-parser/tomita-linux64 EMFILE
at exports._errnoException (util.js:1022:11)
at Process.ChildProcess._handle.onexit (internal/child_process.js:193:32)
at onErrorNT (internal/child_process.js:359:16)
at _combinedTickCallback (internal/process/next_tick.js:74:11)
at process._tickDomainCallback (internal/process/next_tick.js:122:9)

          Command lsof | grep node shows something like this, i.e. max number of opened file descriptor is 80:

          .....
node 3577 ec2-user 78u unix 0xffff88007a594400 0t0 10332349 socket
node 3577 ec2-user 79u unix 0xffff88007a597000 0t0 10332235 socket
node 3577 ec2-user 80u unix 0xffff880004719c00 0t0 10332567 socket
......

          If I do lsof | grep node | wc -l I yelds no more than 250 in total.

          Output of ulimit -a is:

          core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
scheduling priority (-e) 0
file size (blocks, -f) unlimited
pending signals (-i) 7936
max locked memory (kbytes, -l) 64
max memory size (kbytes, -m) unlimited
open files (-n) 4096
pipe size (512 bytes, -p) 8
POSIX message queues (bytes, -q) 819200
real-time priority (-r) 0
stack size (kbytes, -s) 8192
cpu time (seconds, -t) unlimited
max user processes (-u) 7936
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited

          It shows that I have limit of 4096 file descriptors and I run simultaneously maybe 10.
          I have no idea what is going on and how to fix it. I am pretty sure that no one process stucks or something.

          Activity

          Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

          Metadata

          Metadata

          Assignees

          No one assigned

            Labels

            No labels
            No labels

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            No type

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            No projects

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              No milestone

              Relationships

              None yet

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              No branches or pull requests

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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 \u003e 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

              Weird EMFILE error while open files limit is not reached #933

              Closed
              Closed
              Weird EMFILE error while open files limit is not reached#933

              Description

              @bloodcarter
              bloodcarter
              opened on Oct 30, 2017
              • Version: v7.2.1
              • Platform: Linux ip-172-31-16-252 4.9.43-17.39.amzn1.x86_64 Update README for help #1 SMP Fri Sep 15 23:39:41 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
              • Subsystem:

              I have a nodejs app constantly spawning and stopping child processes and doing fetch requests. After running for some time I am starting getting EMFILE errors:

               Error: getaddrinfo EMFILE www.googleapis.com:443
at Object.exports._errnoException (util.js:1022:11)
at errnoException (dns.js:33:15)
at GetAddrInfoReqWrap.onlookup [as oncomplete] (dns.js:76:26)

              After that error immediatedly goes this one:

              Error: spawn /home/ec2-user/workspace/memory/cognitive-task/forward-transformer/speech-parser/tomita-linux64 EMFILE
at exports._errnoException (util.js:1022:11)
at Process.ChildProcess._handle.onexit (internal/child_process.js:193:32)
at onErrorNT (internal/child_process.js:359:16)
at _combinedTickCallback (internal/process/next_tick.js:74:11)
at process._tickDomainCallback (internal/process/next_tick.js:122:9)

              Command lsof | grep node shows something like this, i.e. max number of opened file descriptor is 80:

              .....
node 3577 ec2-user 78u unix 0xffff88007a594400 0t0 10332349 socket
node 3577 ec2-user 79u unix 0xffff88007a597000 0t0 10332235 socket
node 3577 ec2-user 80u unix 0xffff880004719c00 0t0 10332567 socket
......

              If I do lsof | grep node | wc -l I yelds no more than 250 in total.

              Output of ulimit -a is:

              core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
scheduling priority (-e) 0
file size (blocks, -f) unlimited
pending signals (-i) 7936
max locked memory (kbytes, -l) 64
max memory size (kbytes, -m) unlimited
open files (-n) 4096
pipe size (512 bytes, -p) 8
POSIX message queues (bytes, -q) 819200
real-time priority (-r) 0
stack size (kbytes, -s) 8192
cpu time (seconds, -t) unlimited
max user processes (-u) 7936
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited

              It shows that I have limit of 4096 file descriptors and I run simultaneously maybe 10.
              I have no idea what is going on and how to fix it. I am pretty sure that no one process stucks or something.

              Activity

              Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

              Metadata

              Metadata

              Assignees

              No one assigned

                Labels

                No labels
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                No type

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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)) { 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

                  Weird EMFILE error while open files limit is not reached #933

                  Closed
                  Closed
                  Weird EMFILE error while open files limit is not reached#933

                  Description

                  @bloodcarter
                  bloodcarter
                  opened on Oct 30, 2017
                  • Version: v7.2.1
                  • Platform: Linux ip-172-31-16-252 4.9.43-17.39.amzn1.x86_64 Update README for help #1 SMP Fri Sep 15 23:39:41 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
                  • Subsystem:

                  I have a nodejs app constantly spawning and stopping child processes and doing fetch requests. After running for some time I am starting getting EMFILE errors:

                   Error: getaddrinfo EMFILE www.googleapis.com:443
at Object.exports._errnoException (util.js:1022:11)
at errnoException (dns.js:33:15)
at GetAddrInfoReqWrap.onlookup [as oncomplete] (dns.js:76:26)

                  After that error immediatedly goes this one:

                  Error: spawn /home/ec2-user/workspace/memory/cognitive-task/forward-transformer/speech-parser/tomita-linux64 EMFILE
at exports._errnoException (util.js:1022:11)
at Process.ChildProcess._handle.onexit (internal/child_process.js:193:32)
at onErrorNT (internal/child_process.js:359:16)
at _combinedTickCallback (internal/process/next_tick.js:74:11)
at process._tickDomainCallback (internal/process/next_tick.js:122:9)

                  Command lsof | grep node shows something like this, i.e. max number of opened file descriptor is 80:

                  .....
node 3577 ec2-user 78u unix 0xffff88007a594400 0t0 10332349 socket
node 3577 ec2-user 79u unix 0xffff88007a597000 0t0 10332235 socket
node 3577 ec2-user 80u unix 0xffff880004719c00 0t0 10332567 socket
......

                  If I do lsof | grep node | wc -l I yelds no more than 250 in total.

                  Output of ulimit -a is:

                  core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
scheduling priority (-e) 0
file size (blocks, -f) unlimited
pending signals (-i) 7936
max locked memory (kbytes, -l) 64
max memory size (kbytes, -m) unlimited
open files (-n) 4096
pipe size (512 bytes, -p) 8
POSIX message queues (bytes, -q) 819200
real-time priority (-r) 0
stack size (kbytes, -s) 8192
cpu time (seconds, -t) unlimited
max user processes (-u) 7936
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited

                  It shows that I have limit of 4096 file descriptors and I run simultaneously maybe 10.
                  I have no idea what is going on and how to fix it. I am pretty sure that no one process stucks or something.

                  Activity

                  Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

                  Metadata

                  Metadata

                  Assignees

                  No one assigned

                    Labels

                    No labels
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                    No type

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                      No milestone

                      Relationships

                      None yet

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                      No branches or pull requests

                      Issue actions

                      , '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

                      Weird EMFILE error while open files limit is not reached #933

                      Closed
                      Closed
                      Weird EMFILE error while open files limit is not reached#933

                      Description

                      @bloodcarter
                      bloodcarter
                      opened on Oct 30, 2017
                      • Version: v7.2.1
                      • Platform: Linux ip-172-31-16-252 4.9.43-17.39.amzn1.x86_64 Update README for help #1 SMP Fri Sep 15 23:39:41 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
                      • Subsystem:

                      I have a nodejs app constantly spawning and stopping child processes and doing fetch requests. After running for some time I am starting getting EMFILE errors:

                       Error: getaddrinfo EMFILE www.googleapis.com:443
at Object.exports._errnoException (util.js:1022:11)
at errnoException (dns.js:33:15)
at GetAddrInfoReqWrap.onlookup [as oncomplete] (dns.js:76:26)

                      After that error immediatedly goes this one:

                      Error: spawn /home/ec2-user/workspace/memory/cognitive-task/forward-transformer/speech-parser/tomita-linux64 EMFILE
at exports._errnoException (util.js:1022:11)
at Process.ChildProcess._handle.onexit (internal/child_process.js:193:32)
at onErrorNT (internal/child_process.js:359:16)
at _combinedTickCallback (internal/process/next_tick.js:74:11)
at process._tickDomainCallback (internal/process/next_tick.js:122:9)

                      Command lsof | grep node shows something like this, i.e. max number of opened file descriptor is 80:

                      .....
node 3577 ec2-user 78u unix 0xffff88007a594400 0t0 10332349 socket
node 3577 ec2-user 79u unix 0xffff88007a597000 0t0 10332235 socket
node 3577 ec2-user 80u unix 0xffff880004719c00 0t0 10332567 socket
......

                      If I do lsof | grep node | wc -l I yelds no more than 250 in total.

                      Output of ulimit -a is:

                      core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
scheduling priority (-e) 0
file size (blocks, -f) unlimited
pending signals (-i) 7936
max locked memory (kbytes, -l) 64
max memory size (kbytes, -m) unlimited
open files (-n) 4096
pipe size (512 bytes, -p) 8
POSIX message queues (bytes, -q) 819200
real-time priority (-r) 0
stack size (kbytes, -s) 8192
cpu time (seconds, -t) unlimited
max user processes (-u) 7936
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited

                      It shows that I have limit of 4096 file descriptors and I run simultaneously maybe 10.
                      I have no idea what is going on and how to fix it. I am pretty sure that no one process stucks or something.

                      Activity

                      Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

                      Metadata

                      Metadata

                      Assignees

                      No one assigned

                        Labels

                        No labels
                        No labels

                        Type

                        No type

                        Projects

                        No projects

                          Milestone

                          No milestone

                          Relationships

                          None yet

                          Development

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                          , '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('^' + ".*" + '
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                          Weird EMFILE error while open files limit is not reached #933

                          Closed
                          Closed
                          Weird EMFILE error while open files limit is not reached#933

                          Description

                          @bloodcarter
                          bloodcarter
                          opened on Oct 30, 2017
                          • Version: v7.2.1
                          • Platform: Linux ip-172-31-16-252 4.9.43-17.39.amzn1.x86_64 Update README for help #1 SMP Fri Sep 15 23:39:41 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
                          • Subsystem:

                          I have a nodejs app constantly spawning and stopping child processes and doing fetch requests. After running for some time I am starting getting EMFILE errors:

                           Error: getaddrinfo EMFILE www.googleapis.com:443
at Object.exports._errnoException (util.js:1022:11)
at errnoException (dns.js:33:15)
at GetAddrInfoReqWrap.onlookup [as oncomplete] (dns.js:76:26)

                          After that error immediatedly goes this one:

                          Error: spawn /home/ec2-user/workspace/memory/cognitive-task/forward-transformer/speech-parser/tomita-linux64 EMFILE
at exports._errnoException (util.js:1022:11)
at Process.ChildProcess._handle.onexit (internal/child_process.js:193:32)
at onErrorNT (internal/child_process.js:359:16)
at _combinedTickCallback (internal/process/next_tick.js:74:11)
at process._tickDomainCallback (internal/process/next_tick.js:122:9)

                          Command lsof | grep node shows something like this, i.e. max number of opened file descriptor is 80:

                          .....
node 3577 ec2-user 78u unix 0xffff88007a594400 0t0 10332349 socket
node 3577 ec2-user 79u unix 0xffff88007a597000 0t0 10332235 socket
node 3577 ec2-user 80u unix 0xffff880004719c00 0t0 10332567 socket
......

                          If I do lsof | grep node | wc -l I yelds no more than 250 in total.

                          Output of ulimit -a is:

                          core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
scheduling priority (-e) 0
file size (blocks, -f) unlimited
pending signals (-i) 7936
max locked memory (kbytes, -l) 64
max memory size (kbytes, -m) unlimited
open files (-n) 4096
pipe size (512 bytes, -p) 8
POSIX message queues (bytes, -q) 819200
real-time priority (-r) 0
stack size (kbytes, -s) 8192
cpu time (seconds, -t) unlimited
max user processes (-u) 7936
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited

                          It shows that I have limit of 4096 file descriptors and I run simultaneously maybe 10.
                          I have no idea what is going on and how to fix it. I am pretty sure that no one process stucks or something.

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                              , '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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                              Weird EMFILE error while open files limit is not reached #933

                              Closed
                              Closed
                              Weird EMFILE error while open files limit is not reached#933

                              Description

                              @bloodcarter
                              bloodcarter
                              opened on Oct 30, 2017
                              • Version: v7.2.1
                              • Platform: Linux ip-172-31-16-252 4.9.43-17.39.amzn1.x86_64 Update README for help #1 SMP Fri Sep 15 23:39:41 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
                              • Subsystem:

                              I have a nodejs app constantly spawning and stopping child processes and doing fetch requests. After running for some time I am starting getting EMFILE errors:

                               Error: getaddrinfo EMFILE www.googleapis.com:443
at Object.exports._errnoException (util.js:1022:11)
at errnoException (dns.js:33:15)
at GetAddrInfoReqWrap.onlookup [as oncomplete] (dns.js:76:26)

                              After that error immediatedly goes this one:

                              Error: spawn /home/ec2-user/workspace/memory/cognitive-task/forward-transformer/speech-parser/tomita-linux64 EMFILE
at exports._errnoException (util.js:1022:11)
at Process.ChildProcess._handle.onexit (internal/child_process.js:193:32)
at onErrorNT (internal/child_process.js:359:16)
at _combinedTickCallback (internal/process/next_tick.js:74:11)
at process._tickDomainCallback (internal/process/next_tick.js:122:9)

                              Command lsof | grep node shows something like this, i.e. max number of opened file descriptor is 80:

                              .....
node 3577 ec2-user 78u unix 0xffff88007a594400 0t0 10332349 socket
node 3577 ec2-user 79u unix 0xffff88007a597000 0t0 10332235 socket
node 3577 ec2-user 80u unix 0xffff880004719c00 0t0 10332567 socket
......

                              If I do lsof | grep node | wc -l I yelds no more than 250 in total.

                              Output of ulimit -a is:

                              core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
scheduling priority (-e) 0
file size (blocks, -f) unlimited
pending signals (-i) 7936
max locked memory (kbytes, -l) 64
max memory size (kbytes, -m) unlimited
open files (-n) 4096
pipe size (512 bytes, -p) 8
POSIX message queues (bytes, -q) 819200
real-time priority (-r) 0
stack size (kbytes, -s) 8192
cpu time (seconds, -t) unlimited
max user processes (-u) 7936
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited

                              It shows that I have limit of 4096 file descriptors and I run simultaneously maybe 10.
                              I have no idea what is going on and how to fix it. I am pretty sure that no one process stucks or something.

                              Activity

                              Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

                              Metadata

                              Metadata

                              Assignees

                              No one assigned

                                Labels

                                No labels
                                No labels

                                Type

                                No type

                                Projects

                                No projects

                                  Milestone

                                  No milestone

                                  Relationships

                                  None yet

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                                  No branches or pull requests

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