BOOMR.plugins. Memory

Plugin to collect memory, page construction (DOM), screen, CPU and battery metrics (when available).

For information on how to include this plugin, see the Building tutorial.

Beacon Parameters

• Resources:
  • dom.res: Number of resources fetched in the main frame (via ResourceTiming)
  • dom.doms: Number of unique domains in the main page (via ResourceTiming)
• Memory
  • mem.total: memory.totalJSHeapSize
  • mem.limit: memory.jsHeapSizeLimit
  • mem.used: memory.usedJSHeapSize
  • mem.lssz: Number of localStorage bytes used
  • mem.lsln: Number of localStorage keys used
  • mem.sssz: Number of sessionStorage bytes used
  • mem.ssln: Number of sessionStorage keys used
  • dev.mem: Device memory
• Screen
  • scr.xy: screen.width and screen.height (e.g. 100x200)
  • scr.bpp: screen.colorDepth and screen.pixelDepth (e.g. 32/24)
  • scr.dpx: screen.devicePixelRatio
  • scr.orn: screen.orientation.angle and screen.orientation.type (e.g. 90/landscape-primary)
  • scr.sxy: window.scrollX and window.scrollY (e.g. 0x1000)
• Hardware
  • scr.mtp: navigator.maxTouchPoints
  • cpu.cnc: [navigator.hardwareConcurrency] (https://developer.mozilla.org/en-US/docs/Web/API/NavigatorConcurrentHardware/hardwareConcurrency)
• DOM
  • dom.ln: Number of DOM nodes in the main frame
  • dom.sz: Number of HTML bytes of of the main frame
  • dom.ck: Number of bytes stored as cookies available to JavaScript on the current domain
  • dom.img: Number of IMG nodes in the main frame
  • dom.img.ext: Number of external (e.g. not data: URI) IMG nodes in the main frame
  • dom.img.uniq: Number of unique IMG src nodes in the main frame
  • dom.script: Number of SCRIPT nodes in the main frame
  • dom.script.ext: Number of external (e.g. not inline or data: URI) SCRIPT nodes in the main frame
  • dom.script.uniq: Number of unique SCRIPT src nodes in the main frame
  • dom.iframe: Number of IFRAME nodes in the main frame
  • dom.iframe.ext: Number of external (e.g. not javascript: or about: URI) IFRAME nodes in the main frame
  • dom.iframe.uniq: Number of unique IFRAME src nodes in the main frame
  • dom.link: Number of LINK nodes in the main frame
  • dom.link.css: Number of rel="stylesheet" LINK nodes in the main frame
  • dom.link.css.uniq: Number of unique rel="stylesheet" LINK nodes in the main frame
• Net
  • net.sd: Boolean stating whether the user has data saver turned on or not