510 lines
16 KiB
HTML
510 lines
16 KiB
HTML
<!DOCTYPE html>
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<html lang="en">
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<head>
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<script src="__javascript__/OOMAnalyser.js" defer="defer"></script>
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<meta charset="UTF-8">
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<title>OOM Analyser</title>
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<style type='text/css'>
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h1 {
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font-size: 2em;
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margin: 0.67em 0;
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}
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#error_box {
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display: none;
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}
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.kbytes {
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text-align: right;
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}
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.kbytes::after {
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content: " kBytes";
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}
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.pages {
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text-align: right;
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}
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.pages::after {
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content: " pages";
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}
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table {
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border-collapse: collapse;
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padding: 10px;
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table-layout: fixed;
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text-align: left;
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width: 100%;
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}
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svg {
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display: block;
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max-height: 200px;
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}
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th {
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font-weight: bold;
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font-size: large;
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padding: 5px;
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}
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th, td {
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border: 1px solid black;
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word-wrap: break-word;
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}
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.terminal {
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font-family: monospace;
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overflow: auto;
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}
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/* Zebra-Layout */
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tr:nth-child(odd) td:nth-child(2), tr:nth-child(odd) td:nth-child(3) {
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background-color: #f2f2f2;
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}
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.license {
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font-size: small;
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display: none;
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}
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</style>
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<script>
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function goBack() {
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window.history.back();
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}
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</script>
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</head>
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<body>
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<h1>Analyse and visualise Linux OOM output</h1>
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<p>
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This web page analyses Linux Out Of Memory (OOM) messages and shows these
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information in a human friendly presentation.
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</p>
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<p>
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Your input will be analysed locally - in your browser - by an integrated
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JavaScript script without transferring your data to foreign servers.
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</p>
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<div id="input">
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<h2>Step 1 - Enter your OOM message</h2>
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<textarea id="textarea_oom" cols="100" rows="20" autocomplete="off" title="OOM input field">Add your OOMhere</textarea>
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<br/>
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<button onclick="OOMAnalyser.oomAnalyser.analyse()" title="Analyse the OOM from the input area">Analyse</button>
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<button onclick="OOMAnalyser.oomAnalyser.reset()" title="Clean the input area">Reset</button>
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<button onclick="OOMAnalyser.oomAnalyser.copy_example()" title="Copy an example OOM into the input area">Insert example</button>
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</div>
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<div id="analysis">
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<h2>Step 2 - Results</h2>
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<p>
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Go back to
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<a href="javascript:void(0);" onclick="OOMAnalyser.oomAnalyser.reset()" title="Run a new analysis">"Step 1 - Enter your OOM message"</a>
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to run a new analysis.
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</p>
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<table>
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<!--
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<thead>
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<tr>
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<th scope="col"></th>
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<th scope="col">Entry</th>
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<th scope="col">Description</th>
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</tr>
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</thead>
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-->
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<tbody>
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<!-- Trigger process -->
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<tr>
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<th scope="row" colspan="3">Tigger process</th>
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</tr>
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<tr>
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<td></td>
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<td><span id="trigger_proc_name"></span> (PID <span id="trigger_proc_pid"></span>)</td>
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<td>This process requests memory and is triggering thereby the OOM situation</td>
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</tr>
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<!-- Killed Process -->
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<tr>
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<th scope="row" colspan="3">Killed process</th>
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</tr>
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<tr>
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<td></td>
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<td><span id="killed_proc_name"></span> (PID <span id="killed_proc_pid"></span>)</td>
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<td>Process killed by Linux kernel to satisfy the memory request</td>
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</tr>
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<tr>
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<td>OOM Score<br>(score)</td>
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<td id="killed_proc_score"></td>
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<td></td>
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</tr>
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<tr>
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<td>Virtual Memory <br> (total-vm) </td>
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<td id="killed_proc_vm_kb" class="kbytes"></td>
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<td>Virtual memory used by this process</td>
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</tr>
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<tr>
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<td>Resident anonymous memory <br> (anon-rss) </td>
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<td id="killed_proc_anon_rss_kb" class="kbytes"></td>
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<td>Part of the virtual process memory mapped into RAM</td>
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</tr>
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<tr>
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<td>Resident file mapping memory <br> (file-rss) </td>
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<td id="killed_proc_file_rss_kb" class="kbytes"></td>
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<td>Files which have been mapped into RAM (with
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<a href="http://man7.org/linux/man-pages/man2/mmap.2.html">mmap(2)</a>)
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</td>
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</tr>
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<tr>
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<td>Resident shared memory <br> (shmem-rss) </td>
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<td id="killed_proc_shmem_rss_kb" class="kbytes"></td>
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<td>This may include System V shared memory and shared anonymous memory</td>
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</tr>
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<!-- Memory Chunks -->
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<tr>
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<th scope="row" colspan="3">Memory Usage</th>
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</tr>
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<tr>
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<td style="font-weight: bold">RAM Summary</td>
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<td colspan="2"><div id="svg_ram"></div></td>
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</tr>
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<tr>
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<td style="font-weight: bold">Swap Summary</td>
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<td colspan="2"><div id="svg_swap"></div></td>
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</tr>
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<tr>
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<td style="font-weight: bold">RAM usage</td>
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<td></td>
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<td></td>
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</tr>
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<tr>
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<td>Active anonymous memory</td>
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<td id="active_anon_pages" class="pages"></td>
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<td>Recently used anonymous memory.<br>
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These memory pages will usually not swapped out.
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</td>
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</tr>
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<tr>
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<td>Inactive anonymous memory</td>
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<td id="inactive_anon_pages" class="pages"></td>
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<td>Least recently used anonymous memory.<br>
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These memory pages can be swapped out.
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</td>
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</tr>
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<tr>
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<td>Isolated anonymous memory</td>
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<td id="isolated_anon_pages" class="pages"></td>
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<td>Memory isolation is used to separate memory between different virtual machines.</td>
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</tr>
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<tr>
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<td>Active Pagecache</td>
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<td id="active_file_pages" class="pages"></td>
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<td>Pagecache that has been used more recently and usually not reclaimed unless absolutely necessary.</td>
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</tr>
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<tr>
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<td>Inactive Pagecache</td>
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<td id="inactive_file_pages" class="pages"></td>
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<td>Pagecache which has been less recently used. It can be reclaimed without huge performance impact.</td>
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</tr>
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<tr>
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<td>Isolated Pagecache</td>
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<td id="isolated_file_pages" class="pages"></td>
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<td>Memory isolation is used to separate memory between different virtual machines.</td>
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</tr>
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<tr>
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<td>Unevictable Pages</td>
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<td id="unevictable_pages" class="pages"></td>
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<td>Unevictable memory. It can't be swapped out because the pages are owned by ramfs or protected by
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<a href="http://man7.org/linux/man-pages/man3/mlock.5.html" target="_blank">mlock(3)</a> /
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<a href="http://man7.org/linux/man-pages/man2/shmctl.2.html" target="_blank">shmctl(SHM_LOCK)</a>.
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Unevictable pages are managed by kernels LRU framework.
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</td>
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</tr>
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<tr>
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<td>Dirty Pages</td>
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<td id="dirty_pages" class="pages"></td>
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<td>Memory which is waiting to get written back to the disk.
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<sup><a href="#footnote-proc5">[1]</a></sup>
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</td>
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</tr>
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<tr>
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<td>Writeback</td>
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<td id="writeback_pages" class="pages"></td>
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<td>
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Memory which is actively being written back to the disk.
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<sup><a href="#footnote-proc5">[1]</a></sup>
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</td>
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</tr>
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<tr>
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<td>Unstable</td>
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<td id="unstable_pages" class="pages"></td>
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<td>Not yet committed to stable storage.</td>
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</tr>
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<tr>
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<td>Slab Reclaimable</td>
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<td id="slab_reclaimable_pages" class="pages"></td>
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<td>
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Slab is a in-kernel data structures cache. Part of Slab, that might be reclaimed, such as caches.
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<sup><a href="#footnote-proc5">[1]</a></sup>
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<br>
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Additional details are listed in
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<a href="http://man7.org/linux/man-pages/man5/slabinfo.5.html" target="_blank">slabinfo(5)</a> also.
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</td>
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</tr>
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<tr>
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<td>Slab Unreclaimable</td>
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<td id="slab_unreclaimable_pages" class="pages"></td>
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<td>
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Part of Slab, that cannot be reclaimed on memory pressure.
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<sup><a href="#footnote-proc5">[1]</a></sup>
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</td>
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</tr>
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<tr>
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<td>Mapped</td>
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<td id="mapped_pages" class="pages"></td>
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<td>
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Files which have been mapped into memory (with
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<a href="http://man7.org/linux/man-pages/man2/mmap.2.html">mmap(2)</a>), such as libraries.
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<sup><a href="#footnote-proc5">[1]</a></sup>
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</td>
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</tr>
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<tr>
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<td>shmem</td>
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<td id="shmem_pages" class="pages"></td>
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<td>
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Amount of memory consumed in
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<a href="http://man7.org/linux/man-pages/man5/tmpfs.5.html">tmpfs(5)</a>
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filesystems.
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<sup><a href="#footnote-proc5">[1]</a></sup>
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</td>
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</tr>
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<tr>
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<td>Pagetables</td>
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<td id="pagetables_pages" class="pages"></td>
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<td>
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Amount of memory dedicated to the lowest level of pagetables.
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<sup><a href="#footnote-proc5">[1]</a></sup>
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</td>
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</tr>
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<tr>
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<td>Bounce</td>
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<td id="bounce_pages" class="pages"></td>
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<td>
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Memory used for block device "bounce buffers".
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<sup><a href="#footnote-proc5">[1]</a></sup>
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</td>
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</tr>
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<tr>
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<td>free</td>
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<td id="free_pages" class="pages"></td>
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<td></td>
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</tr>
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<tr>
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<td>free_pcp</td>
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<td id="free_pcp_pages" class="pages"></td>
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<td></td>
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</tr>
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<tr>
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<td>free_cma</td>
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<td id="free_cma_pages" class="pages"></td>
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<td></td>
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</tr>
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<tr>
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<td>Total Pagecache</td>
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<td id="pagecache_total_pages" class="pages"></td>
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<td></td>
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</tr>
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<!-- Swap Usage -->
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<tr>
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<td style="font-weight: bold">Swap usage</td>
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<td></td>
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<td></td>
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</tr>
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<tr>
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<td>Swap Total</td>
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<td id="swap_total_kb" class="kbytes"></td>
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<td>Total amount of swap space available.
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<sup><a href="#footnote-proc5">[1]</a></sup>
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</td>
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</tr>
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<tr>
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<td>Swap Free</td>
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<td id="swap_free_kb" class="kbytes"></td>
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<td>Amount of swap space that is currently unused.
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<sup><a href="#footnote-proc5">[1]</a></sup>
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</td>
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</tr>
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<tr>
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<td>Swap Cached</td>
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<td id="swap_cache_kb" class="kbytes"></td>
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<td>Memory that once was swapped out, is swapped back in
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but still also is in the swap file. (If memory pres‐
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sure is high, these pages don't need to be swapped out
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again because they are already in the swap file. This
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saves I/O).
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<sup><a href="#footnote-proc5">[1]</a></sup>
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</td>
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</tr>
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<tr>
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<td>Swap Used</td>
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<td id="swap_used_kb" class="kbytes"></td>
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<td>Amount of used swap space w/o cached swap <br>
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(<code>SwapUsed = SwapTotal - SwapFree -SwapCache</code>)
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</td>
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</tr>
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<!-- Operating System -->
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<tr>
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<th scope="row" colspan="3">Operating System</th>
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</tr>
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<tr>
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<td>Kernel</td>
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<td id="kernel_version"></td>
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<td></td>
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</tr>
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<tr>
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<td>Distribution</td>
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<td id="dist"></td>
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<td>Guessed from the kernel version</td>
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</tr>
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<tr>
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<td>Platform</td>
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<td id="platform"></td>
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<td>Guessed from the kernel version</td>
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</tr>
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<tr>
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<td>Page size</td>
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<td id="page_size" class="kbytes"></td>
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<td>Guessed</td>
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</tr>
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<!-- Memory Chunks -->
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<tr>
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<th scope="row" colspan="3">Memory Chunks</th>
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</tr>
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<tr>
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<td></td>
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<td colspan="2" class="terminal">
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<pre id="mem_node_info"></pre>
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</td>
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</tr>
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<tr>
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<th scope="row" colspan="3">Process Table</th>
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</tr>
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<tr>
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<td></td>
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<td colspan="2" class="terminal">
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<pre id="process_table"></pre>
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</td>
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</tr>
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<!-- Hardware Details -->
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<tr>
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<th scope="row" colspan="3">Hardware Details</th>
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</tr>
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<tr>
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<td></td>
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<td colspan="2" class="terminal">
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<pre id="hardware_info"></pre>
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</td>
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</tr>
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<!-- Kernel Call Tree -->
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<tr>
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<th scope="row" colspan="3">Kernel Call Trace</th>
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</tr>
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<tr>
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<td></td>
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<td colspan="2" class="terminal">
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<pre id="call_trace"></pre>
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</td>
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</tr>
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<!-- Initial OOM -->
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<tr>
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<th scope="row" colspan="3">Entire OOM Message</th>
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</tr>
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<tr>
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<td></td>
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<td colspan="2" class="terminal">
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<pre id="oom"></pre>
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</td>
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</tr>
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</tbody>
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</table>
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<p>
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Go back to
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||
<a href="javascript:void(0);" onclick="OOMAnalyser.oomAnalyser.reset()" title="Run a new analysis">"Step 1 - Enter your OOM message"</a>
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to run a new analysis.
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</p>
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<h2>Footnotes</h2>
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<ol>
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<li id="footnote-proc5"><cite><a href="http://man7.org/linux/man-pages/man5/proc.5.html" target="_blank">
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proc(5) - process information pseudo-filesystem</a></cite> (<a href="#" onclick="goBack()">Go Back</a>)
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</li>
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</ol>
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</div>
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<div id="error_box">
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<h2>Error messages</h2>
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<div class="terminal" id="__terminal__"></div>
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</div>
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<hr/>
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<div class="footer">
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OOMAnalyser <span id="version"></span> |
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Copyright (C) 2017 Carsten Grohmann |
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<a href="javascript:void(0);" onclick="OOMAnalyser.toggle('license')" title="Show / hide license text">License: MIT</a> |
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<a href="https://github.com/CarstenGrohmann/OOMAnalyser" title="Source code on GitHub">Source Code on GitHub</a>
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</div>
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<div class="license" id="license">
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<p>
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Copyright (c) 2017 Carsten Grohmann mail <add at here> carsten-grohmann.de
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</p>
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<p>
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Permission is hereby granted, free of charge, to any person obtaining a copy of
|
||
this software and associated documentation files (the "Software"), to deal in
|
||
the Software without restriction, including without limitation the rights to
|
||
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
|
||
of the Software, and to permit persons to whom the Software is furnished to do
|
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so, subject to the following conditions:
|
||
</p>
|
||
<p>
|
||
The above copyright notice and this permission notice shall be included in all
|
||
copies or substantial portions of the Software.
|
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</p>
|
||
<p>
|
||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||
SOFTWARE.
|
||
</p>
|
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</div>
|
||
|
||
</body>
|
||
</html> |