chromium/content/browser/resources/process/process_internals.html

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  <title>Process Model Internals</title>
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<div id="container">
  <div id="navigation">
    <div id="caption">Process Internals</div>
  </div>
  <div id="content">

    <div id="general">
      <div class="content-header">General Info</div>
      <div id="general-info">
        <button id="refresh-process-info">Refresh</button>
        <div class="description">The information below reflects all profiles in
         this browser process.</div>
        <table>
          <tbody>
            <tr>
              <td>Renderer Process Count:</td>
              <td id="process-count-total"></td>
              <td class="description">This includes the total count of renderer
                processes, but not utility or plugin processes.</td>
            </tr>
            <tr>
              <td>Renderer Process Count for Limit:</td>
              <td id="process-count-for-limit"></td>
              <td class="description">The number of renderer processes
                considered against the limit below, possibly ignoring some of
                the total (e.g., to prevent extensions from using up the limit).
              </td>
            </tr>
            <tr>
              <td>Renderer Process Limit:</td>
              <td id="process-limit"></td>
              <td class="description">A soft limit to the number of renderer
                processes, after which same-site processes will be reused when
                possible.</td>
            </tr>
            <tr>
              <td>Over Process Limit?</td>
              <td id="over-process-limit"></td>
              <td class="description">Whether processes will be reused for new
                main-frame documents when possible.</td>
            </tr>
            <tr>
              <td>ProcessPerSite for main frames:</td>
              <td id="process-per-site-mode"></td>
              <td class="description">Whether processes will be aggressively
                shared for new main frame documents, even when under the
                process limit, when possible.</td>
           </tr>
          </tbody>
        </table>
      </div>
    </div>

    <div id="site-isolation">
      <div class="content-header">Site Isolation</div>
      <div id="site-isolation-mode">Site Isolation mode:
        <span id='isolation-mode'>unknown</span></div>
      <div id="isolated-origins-container">
        <div id="user-triggered-isolated-origins"></div>
        <div id="web-triggered-isolated-origins"></div>
        <div id="global-isolated-origins"></div>
      </div>
    </div>

    <div id="web-contents">
      <div class="content-header">Frame Trees</div>
      <div id="wc-list" class="list pages"></div>
      <div id="tree-view-container">
        <button id="refresh-frame-trees">Refresh</button>
        <div class="description">This page only contains information about the
          current profile.</div>
        <table>
          <tbody>
            <tr>
              <td>Tab Count:</td>
              <td id="tab-count"></td>
              <td class="description">The number of WebContents objects in this
                profile.</td>
            </tr>
            <tr>
              <td>Frame Count:</td>
              <td id="frame-count"></td>
              <td class="description">The number of RenderFrameHosts in this
                profile. Note that this does not include RenderFrameHosts that
                are speculative or pending deletion.</td>
            </tr>
            <tr>
              <td>OOPIF Count:</td>
              <td id="oopif-count"></td>
              <td class="description">The number of out-of-process iframes in
                this profile (as a subset of the Frame Count).</td>
            </tr>
            <tr>
              <td>Process Count:</td>
              <td id="profile-process-count"></td>
              <td class="description">The number of renderer processes in this
                profile.</td>
            </tr>
          </tbody>
        </table>
        <div>Legend: Frame[<i>process_id</i>:<i>routing_id</i>]:
          SI:<i>site_instance_id</i>, SIG:<i>site_instance_group_id</i>,
          BI:<i>browsing_instance_id</i>,
          <i>is process locked to a site?</i>, site: <i>site_url</i> | url:
          <i>last_committed_url</i>
        </div>
        <cr-tree id="tree-view"></cr-tree>
      </div>
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