我的笔记本电脑很新（不到一年）并且规格不错，但从半个月开始，即使我做一些以前可以轻松完成的事情（开发+浏览），它就变得非常慢。
这使得它无法使用，并且特别令人失望，因为：
- 我的笔记本电脑可以更早地处理这些任务，
- 我安装了 Lubuntu，因为我想关注性能而不关心 UI
我的问题是：
我如何确保没有后台程序消耗我的所有资源？
我特别怀疑我的处理器没有充分利用其容量。我怎么才能知道这一点呢？
这是否有可能是我当前发行版（Lubuntu 13.10）的一个错误，可以通过 14.04 解决？（我有点怀疑升级到 13.04 时出现了糟糕的性能问题）。
如果是硬件缺陷，我可以知道吗？
以下是生成的报告System profiler and Benchmark：
Computer
Summary
Computer
Processor 4x Intel(R) Core(TM) i5-2557M CPU @ 1.70GHz
Memory 3947MB (3224MB used)
Operating System Ubuntu 13.10
User Name augustin (augustin)
Date/Time mer. 09 avril 2014 18:25:02 CEST
Display
Resolution 1600x900 pixels
OpenGL Renderer Unknown
X11 Vendor The X.Org Foundation
Multimedia
Audio Adapter HDA-Intel - HDA Intel PCH
Input Devices
Lid Switch
Power Button
Sleep Button
AT Translated Set 2 keyboard
USB2.0 VGA Webcam
Asus WMI hotkeys
ETPS/2 Elantech Touchpad
Video Bus
HDA Intel PCH HDMI/DP,pcm 3=
HDA Intel PCH Headphone
HDA Intel PCH Mic
Printers (CUPS)
HP-Officejet-7400-series Default
Photosmart_B010
Photosmart_B010_2
SCSI Disks
ATA SanDisk SSD U100
Generic- xD/SD/M.S.
Operating System
Version
Kernel Linux 3.11.0-19-generic (x86_64)
Compiled #33-Ubuntu SMP Tue Mar 11 18:48:34 UTC 2014
C Library Unknown
Default C Compiler GNU C Compiler version 4.8.1 (Ubuntu/Linaro 4.8.1-10ubuntu9)
Distribution Ubuntu 13.10
Current Session
Computer Name sempiternel
User Name augustin (augustin)
Home Directory /home/augustin
Desktop Environment LXDE (Lubuntu)
Misc
Uptime 18 hours, 59 minutes
Load Average 0,00, 0,00, 0,00
Kernel Modules
Loaded Modules
pci_stub
vboxpci Oracle VM VirtualBox PCI access Driver
vboxnetadp Oracle VM VirtualBox Network Adapter Driver
vboxnetflt Oracle VM VirtualBox Network Filter Driver
vboxdrv Oracle VM VirtualBox Support Driver
zram Compressed RAM Block Device
parport_pc PC-style parallel port driver
ppdev
rfcomm Bluetooth RFCOMM ver 1.11
bnep Bluetooth BNEP ver 1.3
binfmt_misc
snd_hda_codec_hdmi HDMI HD-audio codec
snd_hda_codec_realtek Realtek HD-audio codec
joydev Joystick device interfaces
x86_pkg_temp_thermal X86 PKG TEMP Thermal Driver
intel_powerclamp Package Level C-state Idle Injection for Intel CPUs
coretemp Intel Core temperature monitor
kvm_intel
kvm
crct10dif_pclmul T10 DIF CRC calculation accelerated with PCLMULQDQ.
crc32_pclmul
ghash_clmulni_intel GHASH Message Digest Algorithm, acclerated by PCLMULQDQ-NI
aesni_intel Rijndael (AES) Cipher Algorithm, Intel AES-NI instructions optimized
aes_x86_64 Rijndael (AES) Cipher Algorithm, asm optimized
lrw LRW block cipher mode
gf128mul Functions for multiplying elements of GF(2^128)
glue_helper
ablk_helper
cryptd Software async crypto daemon
ath3k Atheros AR30xx firmware driver
btusb Generic Bluetooth USB driver ver 0.6
bluetooth Bluetooth Core ver 2.16
asus_nb_wmi Asus Notebooks WMI Hotkey Driver
asus_wmi Asus Generic WMI Driver
sparse_keymap Generic support for sparse keymaps
uvcvideo USB Video Class driver
videobuf2_vmalloc vmalloc memory handling routines for videobuf2
videobuf2_memops common memory handling routines for videobuf2
videobuf2_core Driver helper framework for Video for Linux 2
videodev Device registrar for Video4Linux drivers v2
arc4 ARC4 Cipher Algorithm
ath9k Support for Atheros 802.11n wireless LAN cards.
ath9k_common Shared library for Atheros wireless 802.11n LAN cards.
ath9k_hw Support for Atheros 802.11n wireless LAN cards.
snd_hda_intel Intel HDA driver
snd_hda_codec HDA codec core
snd_hwdep Hardware dependent layer
ath Shared library for Atheros wireless LAN cards.
snd_pcm Midlevel PCM code for ALSA.
snd_page_alloc Memory allocator for ALSA system.
snd_seq_midi Advanced Linux Sound Architecture sequencer MIDI synth.
snd_seq_midi_event MIDI byte <-> sequencer event coder
snd_rawmidi Midlevel RawMidi code for ALSA.
mac80211 IEEE 802.11 subsystem
rts5139 Realtek RTS5139/29 USB card reader driver
snd_seq Advanced Linux Sound Architecture sequencer.
cfg80211 wireless configuration support
snd_seq_device ALSA sequencer device management
snd_timer ALSA timer interface
microcode Microcode Update Driver
psmouse PS/2 mouse driver
i915 Intel Graphics
serio_raw Raw serio driver
lpc_ich LPC interface for Intel ICH
drm_kms_helper DRM KMS helper
mac_hid
snd Advanced Linux Sound Architecture driver for soundcards.
mei_me Intel(R) Management Engine Interface
drm DRM shared core routines
mei Intel(R) Management Engine Interface
soundcore Core sound module
wmi ACPI-WMI Mapping Driver
i2c_algo_bit I2C-Bus bit-banging algorithm
video ACPI Video Driver
option USB Driver for GSM modems
usb_wwan USB Driver for GSM modems
usbserial USB Serial Driver core
lp
parport
ahci AHCI SATA low-level driver
libahci Common AHCI SATA low-level routines
Boots
Boots
Tue Apr 8 2:25 33..11.0-19-generi|-
Tue Apr 8 2:24 33..11.0-19-generi|-
Tue Apr 8 2:34 33..11.0-19-generi|-
Tue Apr 8 1:02 33..11.0-19-generi|-
Tue Apr 8 0:28 33..11.0-18-generi|-
Tue Apr 8 0:01 33..11.0-18-generi|-
Mon Apr 7 1:03 33..11.0-18-generi|-
Sun Apr 6 2:15 33..11.0-18-generi|-
Thu Apr 3 2:45 33..11.0-18-generi|-
Thu Apr 3 2:37 33..11.0-18-generi|-
Thu Apr 3 0:20 33..11.0-18-generi|-
Thu Apr 3 0:10 33..11.0-18-generi|-
Wed Apr 2 1:50 33..11.0-18-generi|-
Tue Apr 1 2:51 33..11.0-18-generi|-
Tue Apr 1 1:22 33..11.0-18-generi|-
Tue Apr 1 1:09 33..11.0-18-generi|-
Tue Apr 1 1:08 33..11.0-18-generi|-
Tue Apr 1 1:08 33..11.0-18-generi|-
Tue Apr 1 0:36 33..11.0-18-generi|-
Tue Apr 1 0:49 33..11.0-18-generi|-
Languages
Available Languages
en_AG English language locale for Antigua and Barbuda
en_AG.utf8 English language locale for Antigua and Barbuda
en_AU.utf8 English locale for Australia
en_BW.utf8 English locale for Botswana
en_CA.utf8 English locale for Canada
en_DK.utf8 English locale for Denmark
en_GB.utf8 English locale for Britain
en_HK.utf8 English locale for Hong Kong
en_IE.utf8 English locale for Ireland
en_IN English language locale for India
en_IN.utf8 English language locale for India
en_NG English locale for Nigeria
en_NG.utf8 English locale for Nigeria
en_NZ.utf8 English locale for New Zealand
en_PH.utf8 English language locale for Philippines
en_SG.utf8 English language locale for Singapore
en_US.utf8 English locale for the USA
en_ZA.utf8 English locale for South Africa
en_ZM English locale for Zambia
en_ZM.utf8 English locale for Zambia
en_ZW.utf8 English locale for Zimbabwe
fr_BE.utf8 French locale for Belgium
fr_CA.utf8 French locale for Canada
fr_CH.utf8 French locale for Switzerland
fr_FR.utf8 French locale for France
fr_LU.utf8 French locale for Luxemburg
Filesystems
Mounted File Systems
/dev/sda2 / 86,25 % (15,1 GiB of 109,9 GiB)
none /sys/fs/cgroup 0,00 % (4,0 KiB of 4,0 KiB)
udev /dev 0,00 % (1,9 GiB of 1,9 GiB)
tmpfs /run 0,28 % (384,4 MiB of 385,5 MiB)
none /run/lock 0,00 % (5,0 MiB of 5,0 MiB)
none /run/shm 2,51 % (1,8 GiB of 1,9 GiB)
none /run/user 0,03 % (100,0 MiB of 100,0 MiB)
Display
Display
Resolution 1600x900 pixels
Vendor The X.Org Foundation
Version 1.14.5
Monitors
Monitor 0 1600x900 pixels
Extensions
BIG-REQUESTS
Composite
DAMAGE
DOUBLE-BUFFER
DPMS
DRI2
GLX
Generic Event Extension
MIT-SCREEN-SAVER
MIT-SHM
RANDR
RECORD
RENDER
SECURITY
SGI-GLX
SHAPE
SYNC
X-Resource
XC-MISC
XFIXES
XFree86-DGA
XFree86-VidModeExtension
XINERAMA
XInputExtension
XKEYBOARD
XTEST
XVideo
OpenGL
Vendor Unknown
Renderer Unknown
Version Unknown
Direct Rendering No
Environment Variables
Environment Variables
USER augustin
LANGUAGE fr_FR
UPSTART_INSTANCE
XDG_SEAT seat0
TEXTDOMAIN im-config
SSH_AGENT_PID 1457
SESSION Lubuntu
HOME /home/augustin
DESKTOP_SESSION Lubuntu
XDG_SEAT_PATH /org/freedesktop/DisplayManager/Seat0
INSTANCE
DBUS_SESSION_BUS_ADDRESS unix:abstract=/tmp/dbus-jfsbk0sTSw
MANDATORY_PATH /usr/share/gconf/Lubuntu.mandatory.path
IM_CONFIG_PHASE 1
SESSIONTYPE lxsession
UPSTART_JOB lxsession
LOGNAME augustin
DEFAULTS_PATH /usr/share/gconf/Lubuntu.default.path
XDG_SESSION_ID c2
PATH /usr/lib/lightdm/lightdm:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games
GDM_LANG fr_FR
XDG_SESSION_PATH /org/freedesktop/DisplayManager/Session0
XDG_RUNTIME_DIR /run/user/1000
DISPLAY :0
LANG fr_FR.UTF-8
XAUTHORITY /home/augustin/.Xauthority
SSH_AUTH_SOCK /tmp/ssh-tQb03q64JLd2/agent.1452
SHELL /bin/zsh
NODE_PATH /usr/lib/nodejs:/usr/lib/node_modules:/usr/share/javascript
GDMSESSION Lubuntu
UPSTART_EVENTS started xsession
TEXTDOMAINDIR /usr/share/locale/
UPSTART_SESSION unix:abstract=/com/ubuntu/upstart-session/1000/1358
XDG_VTNR 7
PWD /home/augustin
XDG_CONFIG_DIRS /etc/xdg/lubuntu:/etc/xdg:/etc/xdg/xdg-Lubuntu:/usr/share/upstart/xdg:/etc/xdg
XDG_DATA_DIRS /etc/xdg/lubuntu:/usr/local/share:/usr/share:/usr/share/gdm:/var/lib/menu-xdg:/etc/xdg/xdg-Lubuntu:/usr/share/upstart/xdg:/etc/xdg
JOB dbus
XDG_CURRENT_DESKTOP LXDE
_LXSESSION_PID 1477
XDG_MENU_PREFIX lxde-
SAL_USE_VCLPLUGIN gtk
XDG_CONFIG_HOME /home/augustin/.config
Users
Users
root root
daemon daemon
bin bin
sys sys
sync sync
games games
man man
lp lp
mail mail
news news
uucp uucp
proxy proxy
www-data www-data
backup backup
list Mailing List Manager
irc ircd
gnats Gnats Bug-Reporting System (admin)
nobody nobody
libuuid
syslog
messagebus
usbmux usbmux daemon
dnsmasq dnsmasq
ntp
whoopsie
lightdm Light Display Manager
augustin augustin
pulse PulseAudio daemon
rtkit RealtimeKit
postgres PostgreSQL administrator
avahi Avahi mDNS daemon
mapbox MapBox system user
couchdb CouchDB Administrator
memcache Memcached
saned
Devices
Processor
Processors
Intel(R) Core(TM) i5-2557M CPU @ 1.70GHz 1701,00MHz
Intel(R) Core(TM) i5-2557M CPU @ 1.70GHz 1701,00MHz
Intel(R) Core(TM) i5-2557M CPU @ 1.70GHz 1600,00MHz
Intel(R) Core(TM) i5-2557M CPU @ 1.70GHz 1701,00MHz
Memory
Memory
Total Memory 3947240 kB
Free Memory 129840 kB
Buffers 9908 kB
Cached 602272 kB
Cached Swap 925048 kB
Active 2083128 kB
Inactive 959920 kB
Active(anon) 2010676 kB
Inactive(anon) 895780 kB
Active(file) 72452 kB
Inactive(file) 64140 kB
Unevictable 0 kB
Mlocked 0 kB
Virtual Memory 9785708 kB
Free Virtual Memory 7224180 kB
Dirty 80 kB
Writeback 0 kB
AnonPages 2166272 kB
Mapped 141020 kB
Shmem 475588 kB
Slab 82140 kB
SReclaimable 39600 kB
SUnreclaim 42540 kB
KernelStack 5280 kB
PageTables 69612 kB
NFS_Unstable 0 kB
Bounce 0 kB
WritebackTmp 0 kB
CommitLimit 11759328 kB
Committed_AS 10360736 kB
VmallocTotal 34359738367 kB
VmallocUsed 359556 kB
VmallocChunk 34359368572 kB
HardwareCorrupted 0 kB
AnonHugePages 0 kB
HugePages_Total 0
HugePages_Free 0
HugePages_Rsvd 0
HugePages_Surp 0
Hugepagesize 2048 kB
DirectMap4k 66592 kB
DirectMap2M 4028416 kB
PCI Devices
PCI Devices
Host bridge Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09)
VGA compatible controller Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) (prog-if 00 [VGA controller])
Communication controller Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 (rev 04)
Audio device Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 05)
PCI bridge Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 (rev b5) (prog-if 00 [Normal decode])
PCI bridge Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 2 (rev b5) (prog-if 00 [Normal decode])
PCI bridge Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 4 (rev b5) (prog-if 00 [Normal decode])
USB controller Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 (rev 05) (prog-if 20 [EHCI])
ISA bridge Intel Corporation QS67 Express Chipset Family LPC Controller (rev 05)
SATA controller Intel Corporation 6 Series/C200 Series Chipset Family 6 port SATA AHCI Controller (rev 05) (prog-if 01 [AHCI 1.0])
SMBus Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller (rev 05)
Network controller Qualcomm Atheros AR9485 Wireless Network Adapter (rev 01)
USB controller Fresco Logic FL1009 USB 3.0 Host Controller (rev 02) (prog-if 30 [XHCI])
USB Devices
Printers
Printers (CUPS)
HP-Officejet-7400-series Default
Photosmart_B010
Photosmart_B010_2
Battery
No batteries
No batteries found on this system
Sensors
Input Devices
Input Devices
Lid Switch
Power Button
Sleep Button
AT Translated Set 2 keyboard
USB2.0 VGA Webcam
Asus WMI hotkeys
ETPS/2 Elantech Touchpad
Video Bus
HDA Intel PCH HDMI/DP,pcm 3=
HDA Intel PCH Headphone
HDA Intel PCH Mic
Storage
SCSI Disks
ATA SanDisk SSD U100
Generic- xD/SD/M.S.
DMI
BIOS
Date 01/20/2012
Vendor American Megatrends Inc. (www.ami.com)
Version UX31E.211
Board
Name UX31E
Vendor ASUSTeK Computer Inc. (SEAGATE, www.seagate.com)
Resources
I/O Ports
0000-0cf7 PCI Bus 0000:00
0000-001f dma1
0020-0021 pic1
0040-0043 timer0
0050-0053 timer1
0060-0060 keyboard
0062-0062 EC data
0064-0064 keyboard
0066-0066 EC cmd
0070-0077 rtc0
0080-008f dma page reg
00a0-00a1 pic2
00c0-00df dma2
00f0-00ff fpu
0240-0259 pnp 00:07
0400-0403 ACPI PM1a_EVT_BLK
0404-0405 ACPI PM1a_CNT_BLK
0408-040b ACPI PM_TMR
0410-0415 ACPI CPU throttle
0420-042f ACPI GPE0_BLK
0430-0433 iTCO_wdt
0450-0450 ACPI PM2_CNT_BLK
0454-0457 pnp 00:06
0458-047f pnp 00:04
0460-047f iTCO_wdt
0500-057f pnp 00:04
0680-069f pnp 00:04
0cf8-0cff PCI conf1
0d00-ffff PCI Bus 0000:00
1000-100f pnp 00:04
164e-164f pnp 00:04
b000-bfff PCI Bus 0000:03
c000-cfff PCI Bus 0000:02
d000-dfff PCI Bus 0000:01
e000-e03f Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) (prog-if 00 [VGA controller])
e040-e05f Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller (rev 05)
e060-e07f Intel Corporation 6 Series/C200 Series Chipset Family 6 port SATA AHCI Controller (rev 05) (prog-if 01 [AHCI 1.0])
e060-e07f AHCI SATA low-level driver
e080-e083 Intel Corporation 6 Series/C200 Series Chipset Family 6 port SATA AHCI Controller (rev 05) (prog-if 01 [AHCI 1.0])
e080-e083 AHCI SATA low-level driver
e090-e097 Intel Corporation 6 Series/C200 Series Chipset Family 6 port SATA AHCI Controller (rev 05) (prog-if 01 [AHCI 1.0])
e090-e097 AHCI SATA low-level driver
e0a0-e0a3 Intel Corporation 6 Series/C200 Series Chipset Family 6 port SATA AHCI Controller (rev 05) (prog-if 01 [AHCI 1.0])
e0a0-e0a3 AHCI SATA low-level driver
e0b0-e0b7 Intel Corporation 6 Series/C200 Series Chipset Family 6 port SATA AHCI Controller (rev 05) (prog-if 01 [AHCI 1.0])
e0b0-e0b7 AHCI SATA low-level driver
ffff-ffff pnp 00:04
ffff-ffff pnp 00:04
Memory
00000000-00000fff reserved
00001000-0009e7ff System RAM
0009e800-0009ffff reserved
000a0000-000bffff PCI Bus 0000:00
000c0000-000ce7ff Video ROM
000d0000-000d3fff PCI Bus 0000:00
000d4000-000d7fff PCI Bus 0000:00
000d8000-000dbfff PCI Bus 0000:00
000dc000-000dffff PCI Bus 0000:00
000e0000-000fffff reserved
000e0000-000e3fff PCI Bus 0000:00
000e4000-000e7fff PCI Bus 0000:00
000f0000-000fffff System ROM
00100000-1fffffff System RAM
01000000-016fcdc6 Kernel code
016fcdc7-01d0eeff Kernel data
01e6e000-01fd0fff Kernel bss
20000000-201fffff reserved
20000000-201fffff pnp 00:0c
20200000-3fffffff System RAM
40000000-401fffff reserved
40000000-401fffff pnp 00:0c
40200000-ba883fff System RAM
ba884000-ba9e9fff reserved
ba9ea000-bac0bfff System RAM
bac0c000-bad95fff reserved
bad96000-bad96fff System RAM
bad97000-bade7fff reserved
bade8000-bae33fff System RAM
bae34000-bafe7fff ACPI Non-volatile Storage
bafe8000-baffcfff System RAM
baffd000-baffffff ACPI Tables
bb000000-bfffffff reserved
c0000000-feafffff PCI Bus 0000:00
c0000000-cfffffff Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) (prog-if 00 [VGA controller])
d0000000-d09fffff PCI Bus 0000:03
d0b00000-d14fffff PCI Bus 0000:02
d1600000-d1ffffff PCI Bus 0000:01
d2000000-d2000fff pnp 00:0b
ddc00000-ddffffff Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) (prog-if 00 [VGA controller])
de000000-de9fffff PCI Bus 0000:03
de000000-de00ffff Fresco Logic FL1009 USB 3.0 Host Controller (rev 02) (prog-if 30 [XHCI])
de000000-de00ffff xhci_hcd
de010000-de010fff Fresco Logic FL1009 USB 3.0 Host Controller (rev 02) (prog-if 30 [XHCI])
de011000-de011fff Fresco Logic FL1009 USB 3.0 Host Controller (rev 02) (prog-if 30 [XHCI])
dea00000-df3fffff PCI Bus 0000:02
dea00000-dea7ffff Qualcomm Atheros AR9485 Wireless Network Adapter (rev 01)
dea00000-dea7ffff Support for Atheros 802.11n wireless LAN cards.
dea80000-dea8ffff Qualcomm Atheros AR9485 Wireless Network Adapter (rev 01)
df400000-dfdfffff PCI Bus 0000:01
dfe00000-dfe03fff Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 05)
dfe00000-dfe03fff ICH HD audio
dfe05000-dfe050ff Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller (rev 05)
dfe06000-dfe067ff Intel Corporation 6 Series/C200 Series Chipset Family 6 port SATA AHCI Controller (rev 05) (prog-if 01 [AHCI 1.0])
dfe06000-dfe067ff AHCI SATA low-level driver
dfe07000-dfe073ff Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 (rev 05) (prog-if 20 [EHCI])
dfe07000-dfe073ff ehci_hcd
dfe09000-dfe0900f Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 (rev 04)
dfe09000-dfe0900f Intel(R) Management Engine Interface
e0000000-e3ffffff PCI MMCONFIG 0000 [bus 00-3f]
e0000000-e3ffffff reserved
e0000000-e3ffffff pnp 00:0a
fec00000-fec00fff reserved
fec00000-fec003ff IOAPIC 0
fed00000-fed003ff HPET 0
fed10000-fed13fff reserved
fed18000-fed19fff reserved
fed18000-fed18fff pnp 00:0a
fed19000-fed19fff pnp 00:0a
fed1c000-fed1ffff reserved
fed1c000-fed1ffff pnp 00:0a
fed1f410-fed1f414 iTCO_wdt
fed20000-fed3ffff pnp 00:0a
fed40000-fed44fff PCI Bus 0000:00
fed45000-fed8ffff pnp 00:0a
fed90000-fed90fff dmar0
fed91000-fed91fff dmar1
fee00000-fee00fff Local APIC
fee00000-fee00fff reserved
ff980000-ffbfffff reserved
ffd80000-ffffffff reserved
100000000-13f7fffff System RAM
13f800000-13fffffff RAM buffer
DMA
4 cascade
Network
Interfaces
Network Interfaces
lo 75,26MiB 75,26MiB 127.0.0.1
wlan0 2523,84MiB 313,60MiB 192.168.10.11
IP Connections
Connections
127.0.0.1:11211 0.0.0.0:* udp
0.0.0.0:80 LISTEN 0.0.0.0:* tcp
127.0.1.1:53 0.0.0.0:* udp
0.0.0.0:3030 LISTEN 0.0.0.0:* tcp
127.0.0.1:631 LISTEN 0.0.0.0:* tcp
0.0.0.0:3000 LISTEN 0.0.0.0:* tcp
127.0.0.1:5432 ESTABLISHED 127.0.0.1:49925 tcp
0.0.0.0:17500 0.0.0.0:* udp
127.0.0.1:5984 LISTEN 0.0.0.0:* tcp
0.0.0.0:59396 0.0.0.0:* udp
127.0.0.1:49923 ESTABLISHED 127.0.0.1:5432 tcp
192.168.10.11:58455 ESTABLISHED 213.199.179.142:40019 tcp
127.0.0.1:5432 ESTABLISHED 127.0.0.1:49925 tcp
192.168.10.11:50182 ESTABLISHED 54.216.68.238:80 tcp
192.168.10.11:53368 ESTABLISHED 75.126.166.165:443 tcp
127.0.0.1:58744 ESTABLISHED 127.0.0.1:5432 tcp
192.168.10.11:49359 ESTABLISHED 54.82.95.91:443 tcp
127.0.0.1:5432 ESTABLISHED 127.0.0.1:49925 tcp
192.168.10.11:43315 ESTABLISHED 198.252.206.25:443 tcp
192.168.10.11:57247 ESTABLISHED 173.194.40.117:443 tcp
127.0.0.1:49924 ESTABLISHED 127.0.0.1:5432 tcp
127.0.0.1:49925 ESTABLISHED 127.0.0.1:5432 tcp
192.168.10.11:57446 ESTABLISHED 157.56.116.210:12350 tcp
192.168.10.11:49708 CLOSE_WAIT 54.216.68.238:80 tcp
192.168.10.11:53765 ESTABLISHED 74.125.132.125:5222 tcp
192.168.10.11:39499 ESTABLISHED 54.246.129.89:443 tcp
192.168.10.11:41080 ESTABLISHED 198.252.206.25:443 tcp
192.168.10.11:58682 ESTABLISHED 173.194.34.50:443 tcp
192.168.10.11:53568 ESTABLISHED 93.184.221.96:443 tcp
192.168.10.11:43023 ESTABLISHED 157.56.126.41:443 tcp
192.168.10.11:38379 ESTABLISHED 198.252.206.24:80 tcp
192.168.10.11:59728 ESTABLISHED 108.160.162.38:80 tcp
127.0.0.1:5432 ESTABLISHED 127.0.0.1:49925 tcp
192.168.10.11:60463 ESTABLISHED 178.79.152.100:80 tcp
192.168.10.11:60650 ESTABLISHED 173.194.66.189:443 tcp
127.0.0.1:5432 ESTABLISHED 127.0.0.1:49925 tcp
192.168.10.11:35203 ESTABLISHED 54.228.93.133:80 tcp
192.168.10.11:37797 ESTABLISHED 192.168.10.127:17500 tcp
192.168.10.11:49219 ESTABLISHED 54.216.68.238:80 tcp
192.168.10.11:50752 ESTABLISHED 107.20.135.171:443 tcp
:::80 LISTEN :::* tcp6
::1:631 LISTEN :::* tcp6
127.0.0.1:41823 0.0.0.0:* udp
127.0.0.1:11211 0.0.0.0:* udp
0.0.0.0:17500 0.0.0.0:* udp
0.0.0.0:5353 0.0.0.0:* udp
127.0.0.1:50440 ESTABLISHED 127.0.0.1:50440 udp
0.0.0.0:53203 0.0.0.0:* udp
0.0.0.0:59396 0.0.0.0:* udp
127.0.1.1:53 0.0.0.0:* udp
0.0.0.0:68 0.0.0.0:* udp
192.168.10.11:123 0.0.0.0:* udp
127.0.0.1:123 0.0.0.0:* udp
0.0.0.0:123 0.0.0.0:* udp
0.0.0.0:43419 0.0.0.0:* udp
:::50401 :::* udp6
:::5353 :::* udp6
fe80::208:caff:fe87:123 :::* udp6
::1:123 :::* udp6
:::123 :::* udp6
:::57680 :::* udp6
Routing Table
IP routing table
0.0.0.0 / 192.168.10.254 0.0.0.0 UG wlan0
192.168.10.0 / 0.0.0.0 255.255.255.0 U wlan0
ARP Table
ARP Table
192.168.10.164 78:e4:00:1a:82:49 wlan0
192.168.10.158 24:0a:64:f8:9a:a6 wlan0
192.168.10.127 58:b0:35:63:39:28 wlan0
192.168.10.254 00:90:0b:23:76:36 wlan0
192.168.10.197 b8:e8:56:31:2a:06 wlan0
192.168.10.45 e0:f8:47:19:dc:de wlan0
192.168.10.250 00:11:32:20:e5:e1 wlan0
DNS Servers
Name servers
127.0.1.1
Statistics
IP
2157697 Paquets reçus au total
0 Paquets arrivant rejetés
3 Avec un protocole inconnu
0 Paquets arrivant rejetés
2147649 Paquets entrants délivrés
1223555 Requêtes envoyées
244 Paquets sortants rejetés
234 Dropped because of missing route
ICMP
3539 Messages ICMP reçus
95 Messages ICMP entrant échoués
810 Messages ICMP envoyés
0 Messages ICMP échoués
ICMPMSG
TCP
15407 Ouvertures de connexions actives
5356 Connexions passives ouvertes
409 Tentatives de connexion échouées
856 Reinitialisation de la connection détéctée
28 Connexions établies
1816595 Segments reçus
1006545 Segments envoyés
10728 Segments retransmis
79 Mauvais segments reçus
2861 Réinitailisations envoyées
UDP
358456 Packets reçus
719 Paquets reçus sur un port inconnu
2914 Erreurs de réception de paquet
278795 Paquets envoyés
UDPLITE
TCPEXT
325 Cookies SYN invalides reçus
24 Resets received for embryonic SYN_RECV sockets
14 Packets pruned from receive queue because of socket buffer overrun
19 Paquets ICMP rejetés par ce qu'ils étaient en dehors de la fenêtre d'acquittement
6994 TCP sockets finished time wait in fast timer
12 DSACKs sent for out of order packets
25961 Accusés de réception envoyés en retard
16 Delayed acks further delayed because of locked socket
16290 Paquets directement mis en attente dans la file d'attente recvmsg.
1 Congestion windows fully recovered without slow start
70095 Bytes directly received in process context from prequeue
1342959 En-têtes de paquets prédits
6 Packets header predicted and directly queued to user
62560 Acknowledgments not containing data payload received
51749 Accusés de réception prédits
1079 Times recovered from packet loss by selective acknowledgements
1 Congestion windows fully recovered without slow start
5 Congestion windows recovered without slow start by DSACK
248 Congestion windows recovered without slow start after partial ack
88 Timeouts after SACK recovery
18 Timeouts in loss state
1422 Fast retransmits
74 SACK retransmits failed
73 Retransmits in slow start
1898 Other TCP timeouts
74 SACK retransmits failed
44 Packets collapsed in receive queue due to low socket buffer
1860 DSACKs sent for old packets
12 DSACKs sent for out of order packets
470 Connections reset due to unexpected data
470 Connections reset due to unexpected data
765 Connections reset due to early user close
314 Connections aborted due to timeout
IPEXT
Shared Directories
SAMBA
NFS
Benchmarks
CPU Blowfish
CPU Blowfish
This Machine 1701 MHz 4,882
Intel(R) Celeron(R) M processor 1.50GHz (null) 26.1876862
PowerPC 740/750 (280.00MHz) (null) 172.816713
CPU CryptoHash
CPU CryptoHash
This Machine 1701 MHz 268,035
CPU Fibonacci
CPU Fibonacci
This Machine 1701 MHz 2,111
Intel(R) Celeron(R) M processor 1.50GHz (null) 8.1375674
PowerPC 740/750 (280.00MHz) (null) 58.07682
CPU N-Queens
CPU N-Queens
This Machine 1701 MHz 4,818
FPU FFT
FPU FFT
This Machine 1701 MHz 1,255
FPU Raytracing
FPU Raytracing
This Machine 1701 MHz 6,594
Intel(R) Celeron(R) M processor 1.50GHz (null) 40.8816714
PowerPC 740/750 (280.00MHz) (null) 161.312647
非常感谢你的支持，如果不到一年就换笔记本电脑的话我会非常难过
编辑：这也是我的任务管理器的屏幕截图。没有进程超过 6%，但处理器很容易达到 100%：
以下是连续拍摄的两张截图：
1.“缓存内存视为可用”未选中 2.“缓存内存视为可用”选中
1.
2.
答案1
打开终端。发出命令
free
这将为您提供如下输出
用法在图片顶部。
如果交换使用率很高，这可能是系统运行缓慢的原因。许多笔记本电脑都配有较慢的 4200-5400 RPM 硬盘，以减少功耗并延长电池寿命。由于交换通常位于驱动器上的分区上，并且通常位于性能最差的末端，因此这可能会导致性能不佳。此外，如果驱动器开始出现故障，它会自动重试多次以读取难以读取的数据，从而导致进一步的延迟。
如果电量水平较低，许多笔记本电脑还会降低 CPU 速度（电源管理）。
提高性能的选项有很多，正确的答案因确定瓶颈的实际位置而异。
1) 如果驱动器速度很慢，您可能希望将其替换为速度更快的驱动器（例如 7200 RPM）。
2)如果驱动器出现故障，您应该更换它，如果有比原来的驱动器更快的驱动器，您可能希望采用这种方法。
3)SSD 比 HDD 快得多。（寻道时间仅为几分之一毫秒）这也是一种选择。为笔记本电脑添加更多 RAM 也是一种可能。
免费还提供有关已安装 RAM 数量的信息，如果您的笔记本电脑支持更多 RAM，您可以
4)安装更多的RAM，这将减少磁盘交换，从而有助于提高性能。
请注意，所有这些选项也适用于桌面系统。
答案2
尽管看起来很奇怪，但为我解决问题的是在 Lubuntu 上安装 Compiz。
我有一台旧的 Acer Aspire 5670，配有专用的 512Mb ATI 显卡，自从 ATI 放弃了对 Linux 中原生驱动程序的支持后，我一直在努力工作多年，直到社区发布了一个足够好的开源驱动程序。
Lubuntu 的情况是它根本不使用显卡 - 而是在 CPU 上渲染所有 UI。Compiz 立即解决了这个问题。我使用摇摆不定的窗口和一些很酷的效果，它的性能比粗糙的 Lxde 好得多（甚至更稳定）。
=== 编辑 ===
我使用 metacity 后获得了更高的性能。它似乎正确地使用了显卡提供的可用资源，但比 Compiz 更轻量、更稳定。
因此，如果你想尝试一种非常简单的方法来提升你的 Lubuntu，只需执行以下操作：
sudo apt-get install metacity
然后将其设置为默认窗口管理器：转到Preferences->Default applications for LXSession->Core applications“窗口管理器”字段并设置“metacity”（而不是 openbox）。
现在您可以保存，然后注销并重新登录以激活它。或者，如果您不想重新启动，只需metacity --replace & 2>&1在终端中输入即可立即激活它。
=== 编辑 2 ===
您可以通过以下方式进一步改进降低交换率到 10。