You can see that I have new computer with core i5 and 8GB DDR3 memory, but I see slow work of Unity.
My top's screen:
top - 13:21:10 up 1:02, 3 users, load average: 15.14, 10.00, 5.61
Tasks: 247 total, 1 running, 242 sleeping, 0 stopped, 4 zombie
Cpu(s): 6.0%us, 1.7%sy, 0.0%ni, 15.7%id, 76.5%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 8157416k total, 7084848k used, 1072568k free, 215372k buffers
Swap: 8388604k total, 0k used, 8388604k free, 3847924k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
2243 robotex 9 -11 163m 7932 6140 S 8 0.1 0:41.81 pulseaudio
1094 root 20 0 157m 28m 10m S 5 0.4 3:15.86 Xorg
2237 robotex 20 0 369m 66m 28m S 5 0.8 3:42.66 compiz
5253 robotex 20 0 408m 63m 34m S 3 0.8 0:39.43 iron
5082 robotex 20 0 364m 93m 26m S 2 1.2 0:46.64 skype
2338 robotex 20 0 180m 22m 10m S 2 0.3 1:46.12 unity-panel-ser
2340 robotex 20 0 68692 7804 3408 S 1 0.1 0:58.19 hud-service
5009 robotex 20 0 167m 17m 11m S 1 0.2 0:01.35 gnome-terminal
7331 robotex 20 0 205m 57m 32m S 1 0.7 0:02.87 apport-gtk
2208 robotex 20 0 8588 4484 620 S 1 0.1 0:33.23 dbus-daemon
2270 robotex 20 0 159m 10m 8068 S 1 0.1 0:38.28 indicator-multi
7999 robotex 20 0 2836 1236 884 R 1 0.0 0:00.09 top
11 root 20 0 0 0 0 S 0 0.0 0:08.16 kworker/0:1
1059 mysql 20 0 332m 82m 6208 S 0 1.0 0:01.66 mysqld
2308 robotex 20 0 152m 10m 7712 S 0 0.1 0:07.19 bamfdaemon
5074 robotex 20 0 73820 16m 9720 S 0 0.2 0:02.31 python
5517 robotex 20 0 300m 68m 22m S 0 0.9 1:52.42 iron
Load average is a very large.
In moments, when system works very slow I see in iotop that many processes uses IO on 99,9%. So, I think that problem somewhere in working with IO devices. (Maybe problem in HDD system?)
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: unity 5.12-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-24.37-generic-pae 3.2.14
Uname: Linux 3.2.0-24-generic-pae i686
.tmp.unity.support.test.0:
ApportVersion: 2.0.1-0ubuntu7
Architecture: i386
CompizPlugins: [core,bailer,detection,composite,opengl,decor,compiztoolbox,snap,colorfilter,text,workarounds,neg,copytex,annotate,clone,commands,gnomecompat,move,place,regex,resize,rotate,screenshot,imgpng,water,zoom,grid,imgsvg,unitymtgrabhandles,expo,winrules,kdecompat,session,vpswitch,mousepoll,shift,ezoom,resizeinfo,mag,switcher,thumbnail,wall,ring,fade,scale,unityshell,scaleaddon,opacify]
CompositorRunning: compiz
Date: Wed May 16 13:20:29 2012
DistUpgraded: 2012-04-27 13:58:27,499 DEBUG enabling apt cron job
DistroCodename: precise
DistroVariant: ubuntu
DkmsStatus:
virtualbox, 4.1.12, 3.0.0-17-generic-pae, i686: installed
virtualbox, 4.1.12, 3.2.0-24-generic-pae, i686: installed
GraphicsCard:
Intel Corporation Core Processor Integrated Graphics Controller [8086:0042] (rev 18) (prog-if 00 [VGA controller])
Subsystem: ASUSTeK Computer Inc. Device [1043:8383]
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
MachineType: System manufacturer System Product Name
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.2.0-24-generic-pae root=UUID=a4cb5a27-10a2-4ca3-8de3-2703f24cd560 ro quiet splash vt.handoff=7
SourcePackage: unity
UpgradeStatus: Upgraded to precise on 2012-04-27 (18 days ago)
dmi.bios.date: 08/18/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1101
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: P7H55-M
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev X.0x
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1101:bd08/18/2010:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP7H55-M:rvrRevX.0x:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
version.compiz: compiz 1:0.9.7.8-0ubuntu1
version.libdrm2: libdrm2 2.4.32-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.2-0ubuntu3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.2-0ubuntu3
version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu10.1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20111219.aacbd629-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.17.0-1ubuntu4
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20111201+b5534a1-1build2
As I said before, something wrong with HDD. In attachment my iotop window after reading or writing HDD operations. When HDD reads/writes, any other processes can't access disk in this moment and 10-20 minutes after this moment. So, any disk operation takes very much time.