Public bug reported:
Since the Firefox 56 upgrade, CPU utilization has been high during idle
and light usage. Just typing this bugreport, here's a sample top:
top - 23:02:20 up 2 days, 41 min, 5 users, load average: 0.78, 0.80, 0.77
Tasks: 243 total, 2 running, 240 sleeping, 0 stopped, 1 zombie
%Cpu(s): 9.0 us, 0.5 sy, 0.0 ni, 90.0 id, 0.5 wa, 0.0 hi, 0.0 si, 0.0 st
KiB Mem : 7130052 total, 2096428 free, 2678412 used, 2355212 buff/cache
KiB Swap: 524280 total, 524280 free, 0 used. 4027112 avail Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
1895 js1 20 0 4701160 2.032g 175340 R 100.0 29.9 1086:22 firefox
Please let me know if I need to provide any additional debug or info.
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: firefox 56.0+build6-0ubuntu0.16.04.2
ProcVersionSignature: Ubuntu 4.4.0-97.120-generic 4.4.87
Uname: Linux 4.4.0-97-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia
AddonCompatCheckDisabled: False
ApportVersion: 2.20.1-0ubuntu2.10
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: js1 1957 F.... pulseaudio
/dev/snd/controlC1: js1 1957 F.... pulseaudio
BuildID: 20171003101344
Channel: Unavailable
CurrentDesktop: XFCE
Date: Sun Oct 15 22:57:05 2017
Extensions: extensions.sqlite corrupt or missing
ForcedLayersAccel: False
IfupdownConfig:
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback
IncompatibleExtensions: Unavailable (corrupt or non-existant compatibility.ini
or extensions.sqlite)
InstallationDate: Installed on 2016-05-01 (532 days ago)
InstallationMedia: Xubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
IpRoute:
default via 10.23.21.1 dev wlp7s4 proto static metric 600
10.23.21.0/26 dev wlp7s4 proto kernel scope link src 10.23.21.18 metric
600
169.254.0.0/16 dev wlp7s4 scope link metric 1000
Locales: extensions.sqlite corrupt or missing
MostRecentCrashID: bp-5bca9619-b74f-4910-9909-6bd1b0170925
Plugins: Shockwave Flash - /usr/lib/flashplugin-installer/libflashplayer.so
PrefSources: prefs.js
Profiles: Profile0 (Default) - LastVersion=56.0/20171003101344 (In use)
RfKill:
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
RunningIncompatibleAddons: False
SourcePackage: firefox
Themes: extensions.sqlite corrupt or missing
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/28/2013
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A16
dmi.board.name: 0D881F
dmi.board.vendor: Dell Inc.
dmi.board.version: A05
dmi.chassis.type: 7
dmi.chassis.vendor: Dell Inc.
dmi.modalias:
dmi:bvnDellInc.:bvrA16:bd05/28/2013:svnDellInc.:pnPrecisionWorkStationT7500:pvr:rvnDellInc.:rn0D881F:rvrA05:cvnDellInc.:ct7:cvr:
dmi.product.name: Precision WorkStation T7500
dmi.sys.vendor: Dell Inc.
** Affects: firefox (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug xenial
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https://bugs.launchpad.net/bugs/1723840
Title:
Firefox 56.0 High CPU
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