Closed Bug 1482642 Opened 6 years ago Closed 6 years ago

High CPU, heat, and fan with media content on macOS

Categories

(Firefox :: General, defect)

Product:
Firefox
Component:
General
Version:
61 Branch
Platform:
x86_64
macOS
Type:
defect
Priority:
Not set
Severity:
normal

Tracking

()

Status:
RESOLVED DUPLICATE of bug 1404042

People

(Reporter: xracoonx, Unassigned)

Details

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:61.0) Gecko/20100101 Firefox/61.0
Build ID: 20180807170231

Steps to reproduce:

Play media (audio, video) on website (Facebook, news websites, etc.)


Actual results:

Firefox uses ~60% CPU (~15% Firefox, ~45% Firefox CP Web Content while Chrome and Safari use below 2%.

This heats up the MacBook and causes noise by fast fan spinning.


Expected results:

Firefox uses way less CPU resources.
The bug was filed from another computer. The operating system on the computer having trouble is MacBook Pro (Retina, 15", mid 2014) with macOS High Sierra 10.13.6.

The problem exists since Quantum was introduced (so I switched to Safari but I really would like to go back...).
I already tried Save Mode and a refresh.
OS: Unspecified → Mac OS X
Hardware: Unspecified → x86_64
Hi xracoonx,

Can you provide additional information from about:support from your MacBook Pro?
Component: Untriaged → General
Flags: needinfo?(xracoonx)
{
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    "buildID": "20180807170231",
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    "safeMode": false,
    "updateChannel": "release",
    "supportURL": "https://support.mozilla.org/1/firefox/61.0.2/Darwin/en-US/",
    "numTotalWindows": 1,
    "numRemoteWindows": 1,
    "remoteAutoStart": true,
    "currentContentProcesses": 5,
    "maxContentProcesses": 4,
    "autoStartStatus": 1,
    "policiesStatus": 0,
    "keyGoogleFound": true,
    "keyMozillaFound": true
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  "securitySoftware": {
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    "registeredAntiSpyware": "",
    "registeredFirewall": ""
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    "browser.urlbar.timesBeforeHidingSuggestionsHint": 0,
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    "browser.urlbar.daysBeforeHidingSuggestionsPrompt": 0,
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    "plugin.state.silverlight": 0,
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    "plugins.ctprollout.cohort": "test",
    "privacy.history.custom": true,
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    "privacy.sanitize.migrateClearSavedPwdsOnExit": true,
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    "privacy.donottrackheader.value": 1,
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    "privacy.sanitize.pending": "[{\"id\":\"newtab-container\",\"itemsToClear\":[],\"options\":{}}]",
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    "security.sandbox.content.tempDirSuffix": "{eddf8083-bf05-5648-b5c7-af8e660c58c5}",
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      {
        "name": "Internal Speakers",
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  "javaScript": {
    "incrementalGCEnabled": true
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    "forceDisabled": 0,
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    "instantiator": ""
  },
  "libraryVersions": {
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      "version": "4.19"
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    "NSS": {
      "minVersion": "3.37.3",
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    "NSSUTIL": {
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    "NSSSSL": {
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    "NSSSMIME": {
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  "userJS": {
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  "intl": {
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      "available": [
        "en-US",
        "de"
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      "regionalPrefs": [
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    "osPrefs": {
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      "regionalPrefsLocales": [
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    }
  },
  "crashes": {
    "submitted": [],
    "pending": 0
  },
  "sandbox": {
    "contentSandboxLevel": 3,
    "effectiveContentSandboxLevel": 3
  },
  "graphics": {
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    "numAcceleratedWindows": 1,
    "windowLayerManagerType": "OpenGL",
    "windowLayerManagerRemote": true,
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    "adapterRAM": "",
    "adapterDrivers": "",
    "driverVersion": "",
    "driverDate": "",
    "usesTiling": true,
    "contentUsesTiling": true,
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    "webgl1WSIInfo": "CGL",
    "webgl2Renderer": "Intel Inc. -- Intel Iris Pro OpenGL Engine",
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        {
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          "log": [
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      "fallbacks": []
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    "crashGuards": []
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  "extensions": [
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    },
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  ],
  "features": [
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      "name": "Activity Stream",
      "version": "2018.06.29.1026-fa231556",
      "id": "activity-stream@mozilla.org"
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    {
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    {
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      "id": "screenshots@mozilla.org"
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    {
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      "id": "formautofill@mozilla.org"
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    {
      "name": "Photon onboarding",
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      "id": "onboarding@mozilla.org"
    },
    {
      "name": "Pocket",
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      "id": "firefox@getpocket.com"
    },
    {
      "name": "Web Compat",
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      "id": "webcompat@mozilla.org"
    },
    {
      "name": "WebCompat Reporter",
      "version": "1.0.0",
      "id": "webcompat-reporter@mozilla.org"
    }
  ]
}
Flags: needinfo?(xracoonx)
Here is an example of a website I see this massive difference in CPU usage: 

https://www.tagesschau.de/multimedia/audio/audio-59273.html
(In reply to xracoonx from comment #5)
> Here is an example of a website I see this massive difference in CPU usage: 
> 
> https://www.tagesschau.de/multimedia/audio/audio-59273.html

Would you be able to try this using Nightly? [1]
We've had similar reports since 57 and it would help to know if this problem still occurs for you with the current version. 

https://www.mozilla.org/firefox/channel/desktop/#nightly
Flags: needinfo?(xracoonx)
(In reply to Sam Foster [:sfoster] from comment #6)
> (In reply to xracoonx from comment #5)
> > Here is an example of a website I see this massive difference in CPU usage: 
> > 
> > https://www.tagesschau.de/multimedia/audio/audio-59273.html
> 
> Would you be able to try this using Nightly? [1]
> We've had similar reports since 57 and it would help to know if this problem
> still occurs for you with the current version. 
> 
> https://www.mozilla.org/firefox/channel/desktop/#nightly

Unfortunately, the same problem occurs in (current) Nightly.
Flags: needinfo?(xracoonx)
Now I have found some other reports on high CPU usage on mac. Since you are asking people to give more information, I am wondering whether you don't see the same on your MacBooks? Is it something that affects only a small part of people on MacBooks? 

Please let me know whether I can give any further information. 

I'd love to see Firefox succeed on the mac but at the moment it doesn't (at least for me).
Status: UNCONFIRMED → RESOLVED
Closed: 6 years ago
Resolution: --- → DUPLICATE
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