I installed xubuntu 16.04 (clean installation) on 3 machines. Two of
them have 4gb ram and duo core celeron cpu and the 3rd has only 2gb but
a core duo cpu. Generally, I see that 16.04 needs more ram than 14.04
did to run the same applications. On my 3rd machine (this with 2gb ram
only) many times (when many tabs on internet browser are open or flash
is running) exceeds the whole ram and starts swap (set vm.swappiness=1
instead the default 60). Under 14.04 my 3rd machine never needed to use
swap.
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https://bugs.launchpad.net/bugs/1572801
Title:
Ubuntu 16.04 Unity desktop uses much more ram than Ubuntu 15.10
Status in linux package in Ubuntu:
Incomplete
Status in linux source package in Xenial:
Confirmed
Bug description:
Ubuntu 16.04 64bit ISO number 20160420.1
unity version 7.4.0+16.04.20160415-0ubuntu1
Ubuntu 16.04 64bit ram usage has increase dramatically over Ubuntu 15.10
Ubuntu 16.04 ram roughly 1 GB Ubuntu15.10 can be tuned to 420, 450 MB
Ubuntu 16.04 with unity uses 1GB whereas Kubuntu 16.04 is using 420MB live usb
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: unity 7.4.0+16.04.20160415-0ubuntu1
ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
Uname: Linux 4.4.0-21-generic x86_64
.tmp.unity_support_test.0:
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
CasperVersion: 1.376
CompizPlugins: No value set for
`/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
CurrentDesktop: Unity
Date: Thu Apr 21 01:44:22 2016
DistUpgraded: Fresh install
DistroCodename: xenial
DistroVariant: ubuntu
GraphicsCard:
Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics
Controller [8086:0412] (rev 06) (prog-if 00 [VGA controller])
Subsystem: ASUSTeK Computer Inc. Xeon E3-1200 v3/4th Gen Core Processor
Integrated Graphics Controller [1043:8534]
GsettingsChanges:
b'org.compiz.core' b'outputs' b"['1920x1080+0+0']"
b'org.compiz.core' b'active-plugins' b"['core', 'composite', 'opengl',
'place', 'regex', 'resize', 'session', 'snap', 'vpswitch', 'wall', 'animation',
'commands', 'compiztoolbox', 'copytex', 'fade', 'grid', 'imgpng', 'mousepoll',
'move', 'scale', 'unitymtgrabhandles', 'workarounds', 'expo', 'ezoom',
'unityshell']"
b'org.gnome.desktop.interface' b'gtk-im-module' b"'gtk-im-context-simple'"
b'org.gnome.desktop.interface' b'scaling-factor' b'uint32 1'
LiveMediaBuild: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
MachineType: ASUS All Series
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi
file=/cdrom/preseed/username.seed boot=casper quiet splash ---
cdrom-detect/try-usb=true noprompt
SourcePackage: unity
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 06/03/2014
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 2004
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: Z87-PLUS
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr2004:bd06/03/2014:svnASUS:pnAllSeries:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnZ87-PLUS:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: All Series
dmi.product.version: System Version
dmi.sys.vendor: ASUS
version.compiz: compiz 1:0.9.12.2+16.04.20160415-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.67-1
version.libgl1-mesa-dri: libgl1-mesa-dri 11.2.0-1ubuntu2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 11.2.0-1ubuntu2
version.xserver-xorg-core: xserver-xorg-core 2:1.18.3-1ubuntu2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.1-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.7.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel
2:2.99.917+git20160325-1ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau
1:1.0.12-1build2
xserver.bootTime: Thu Apr 21 01:37:17 2016
xserver.configfile: default
xserver.errors:
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
xserver.version: 2:1.18.3-1ubuntu2
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