从13.04升级后,当RAM变满时,响应能力急剧下降

自从我从ubuntu 13.04升级到14.04(以及13.10之前)后,当内存满了并且必须开始交换时,我的系统就会瘫痪。

当然我知道应该发生性能损失,但这太多了..即使指针停止工作几秒钟,有一次我不得不手动重启笔记本电脑(我无法切换到带ALT的控制台) + Fx杀死一些进程)。 这通常发生在谷歌浏览器上,当我打开远程打开标签并且我还有一些其他应用程序正在运行时,我仍然期望从linux开始表现得比这更好,我认为这开始发生在13.10和14.04之后。

我正在使用“系统负载指示器”(由Hofmann提供),当内存充满时,cpu负载达到100%,如果我没有立即开始关闭东西,那么caos是不可避免的。

这是我的笔记本硬件规格:

lenovou310 description: Laptop product: IdeaPad U310 (System SKUNumber) vendor: LENOVO version: Lenovo U310 serial: QTF0E423807536 width: 64 bits capabilities: smbios-2.7 dmi-2.7 vsyscall32 configuration: administrator_password=unknown boot=normal chassis=laptop family=IDEAPAD U310 frontpanel_password=unknown keyboard_password=unknown power-on_password=unknown sku=System SKUNumber uuid=0062E5DD-80C0-047A-BBC8-089E0131C789 *-core description: Motherboard product: Lenovo vendor: LENOVO physical id: 0 version: Lenovo U310 serial: QB06137476 slot: Part Component *-firmware description: BIOS vendor: LENOVO physical id: 5 version: 65CN15WW date: 06/05/2012 size: 128KiB capacity: 6592KiB capabilities: pci upgrade shadowing cdboot bootselect edd int5printscreen int9keyboard int14serial int17printer int10video pc98 acpi usb biosbootspecification netboot uefi *-cpu description: CPU product: Intel(R) Core(TM) i5-3317U CPU @ 1.70GHz vendor: Intel Corp. physical id: 0 bus info: cpu@0 version: Intel(R) Core(TM) i5-3317U CPU @ 1.70GHz serial: To Be Filled By OEM slot: CPU Socket - U3E1 size: 782MHz capacity: 782MHz width: 64 bits clock: 100MHz capabilities: x86-64 fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase smep erms cpufreq configuration: cores=2 enabledcores=2 threads=4 *-cache:0 description: L1 cache physical id: 2 slot: L1-Cache size: 32KiB capacity: 32KiB capabilities: internal write-through instruction *-cache:1 description: L2 cache physical id: 3 slot: L2-Cache size: 256KiB capacity: 256KiB capabilities: internal write-through unified *-cache:2 description: L3 cache physical id: 4 slot: L3-Cache size: 3MiB capacity: 3MiB capabilities: internal write-back unified *-cache description: L1 cache physical id: 1 slot: L1-Cache size: 32KiB capacity: 32KiB capabilities: internal write-through data *-memory description: System Memory physical id: 36 slot: System board or motherboard size: 4GiB *-bank:0 description: SODIMM DDR3 Synchronous 1600 MHz (0,6 ns) product: SHARETRONIC vendor: 0000 physical id: 0 serial: EDD60803 slot: ChannelA-DIMM0 size: 4GiB width: 64 bits clock: 1600MHz (0.6ns) *-bank:1 description: DIMM [empty] physical id: 1 slot: ChannelB-DIMM0 *-pci description: Host bridge product: 3rd Gen Core processor DRAM Controller vendor: Intel Corporation physical id: 100 bus info: pci@0000:00:00.0 version: 09 width: 32 bits clock: 33MHz *-display description: VGA compatible controller product: 3rd Gen Core processor Graphics Controller vendor: Intel Corporation physical id: 2 bus info: pci@0000:00:02.0 version: 09 width: 64 bits clock: 33MHz capabilities: msi pm vga_controller bus_master cap_list rom configuration: driver=i915 latency=0 resources: irq:45 memory:f0000000-f03fffff memory:e0000000-efffffff ioport:3000(size=64) *-usb:0 description: USB controller product: 7 Series/C210 Series Chipset Family USB xHCI Host Controller vendor: Intel Corporation physical id: 14 bus info: pci@0000:00:14.0 version: 04 width: 64 bits clock: 33MHz capabilities: pm msi xhci bus_master cap_list configuration: driver=xhci_hcd latency=0 resources: irq:40 memory:f0600000-f060ffff *-communication description: Communication controller product: 7 Series/C210 Series Chipset Family MEI Controller #1 vendor: Intel Corporation physical id: 16 bus info: pci@0000:00:16.0 version: 04 width: 64 bits clock: 33MHz capabilities: pm msi bus_master cap_list configuration: driver=mei_me latency=0 resources: irq:43 memory:f0615000-f061500f *-usb:1 description: USB controller product: 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #2 vendor: Intel Corporation physical id: 1a bus info: pci@0000:00:1a.0 version: 04 width: 32 bits clock: 33MHz capabilities: pm debug ehci bus_master cap_list configuration: driver=ehci-pci latency=0 resources: irq:16 memory:f0619000-f06193ff *-multimedia description: Audio device product: 7 Series/C210 Series Chipset Family High Definition Audio Controller vendor: Intel Corporation physical id: 1b bus info: pci@0000:00:1b.0 version: 04 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list configuration: driver=snd_hda_intel latency=0 resources: irq:46 memory:f0610000-f0613fff *-pci:0 description: PCI bridge product: 7 Series/C210 Series Chipset Family PCI Express Root Port 1 vendor: Intel Corporation physical id: 1c bus info: pci@0000:00:1c.0 version: c4 width: 32 bits clock: 33MHz capabilities: pci pciexpress msi pm normal_decode bus_master cap_list configuration: driver=pcieport resources: irq:16 *-pci:1 description: PCI bridge product: 7 Series/C210 Series Chipset Family PCI Express Root Port 2 vendor: Intel Corporation physical id: 1c.1 bus info: pci@0000:00:1c.1 version: c4 width: 32 bits clock: 33MHz capabilities: pci pciexpress msi pm normal_decode bus_master cap_list configuration: driver=pcieport resources: irq:17 ioport:2000(size=4096) ioport:f0400000(size=1048576) *-network description: Ethernet interface product: RTL8101E/RTL8102E PCI Express Fast Ethernet controller vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@0000:02:00.0 logical name: eth0 version: 05 serial: 08:9e:01:31:c7:89 size: 10Mbit/s capacity: 100Mbit/s width: 64 bits clock: 33MHz capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl_nic/rtl8105e-1.fw latency=0 link=no multicast=yes port=MII speed=10Mbit/s resources: irq:41 ioport:2000(size=256) memory:f0404000-f0404fff memory:f0400000-f0403fff *-pci:2 description: PCI bridge product: 7 Series/C210 Series Chipset Family PCI Express Root Port 3 vendor: Intel Corporation physical id: 1c.2 bus info: pci@0000:00:1c.2 version: c4 width: 32 bits clock: 33MHz capabilities: pci pciexpress msi pm normal_decode bus_master cap_list configuration: driver=pcieport resources: irq:18 memory:f0500000-f05fffff *-network description: Wireless interface product: Centrino Wireless-N 2200 vendor: Intel Corporation physical id: 0 bus info: pci@0000:03:00.0 logical name: wlan0 version: c4 serial: 9c:4e:36:74:fc:9c width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=iwlwifi driverversion=3.13.0-29-generic firmware=18.168.6.1 ip=192.168.1.126 latency=0 link=yes multicast=yes wireless=IEEE 802.11bgn resources: irq:44 memory:f0500000-f0501fff *-usb:2 description: USB controller product: 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #1 vendor: Intel Corporation physical id: 1d bus info: pci@0000:00:1d.0 version: 04 width: 32 bits clock: 33MHz capabilities: pm debug ehci bus_master cap_list configuration: driver=ehci-pci latency=0 resources: irq:23 memory:f0618000-f06183ff *-isa description: ISA bridge product: HM77 Express Chipset LPC Controller vendor: Intel Corporation physical id: 1f bus info: pci@0000:00:1f.0 version: 04 width: 32 bits clock: 33MHz capabilities: isa bus_master cap_list configuration: driver=lpc_ich latency=0 resources: irq:0 *-storage description: SATA controller product: 7 Series Chipset Family 6-port SATA Controller [AHCI mode] vendor: Intel Corporation physical id: 1f.2 bus info: pci@0000:00:1f.2 version: 04 width: 32 bits clock: 66MHz capabilities: storage msi pm ahci_1.0 bus_master cap_list configuration: driver=ahci latency=0 resources: irq:42 ioport:3088(size=8) ioport:3094(size=4) ioport:3080(size=8) ioport:3090(size=4) ioport:3060(size=32) memory:f0617000-f06177ff *-serial UNCLAIMED description: SMBus product: 7 Series/C210 Series Chipset Family SMBus Controller vendor: Intel Corporation physical id: 1f.3 bus info: pci@0000:00:1f.3 version: 04 width: 64 bits clock: 33MHz configuration: latency=0 resources: memory:f0614000-f06140ff ioport:efa0(size=32) *-scsi:0 physical id: 2 logical name: scsi0 capabilities: emulated *-disk description: ATA Disk product: SanDisk SSD U100 physical id: 0.0.0 bus info: scsi@0:0.0.0 logical name: /dev/sda version: 10.5 serial: 123703305383 size: 22GiB (24GB) capabilities: partitioned partitioned:dos configuration: ansiversion=5 sectorsize=512 signature=a157f07e *-volume:0 description: EXT4 volume vendor: Linux physical id: 1 bus info: scsi@0:0.0.0,1 logical name: /dev/sda1 logical name: / version: 1.0 serial: 1d689f36-584e-43fa-9913-9fba14388fe6 size: 18GiB capacity: 18GiB capabilities: primary bootable journaled extended_attributes large_files huge_files dir_nlink recover extents ext4 ext2 initialized configuration: created=2013-10-15 21:14:43 filesystem=ext4 lastmountpoint=/ modified=2014-06-11 19:46:24 mount.fstype=ext4 mount.options=rw,relatime,errors=remount-ro,data=ordered mounted=2014-06-11 19:46:24 state=mounted *-volume:1 description: Linux swap volume physical id: 2 bus info: scsi@0:0.0.0,2 logical name: /dev/sda2 version: 1 serial: 08b19113-2637-4773-bd5a-f29e84f437d9 size: 3924MiB capacity: 3924MiB capabilities: primary nofs swap initialized configuration: filesystem=swap pagesize=4096 *-scsi:1 physical id: 3 logical name: scsi1 capabilities: emulated *-disk description: ATA Disk product: ST500LT012-9WS14 vendor: Seagate physical id: 0.0.0 bus info: scsi@1:0.0.0 logical name: /dev/sdb version: 0001 serial: W0V201JA size: 465GiB (500GB) capabilities: partitioned partitioned:dos configuration: ansiversion=5 sectorsize=4096 signature=a157f067 *-volume description: EXT4 volume vendor: Linux physical id: 1 bus info: scsi@1:0.0.0,1 logical name: /dev/sdb1 logical name: /media/hdd2 version: 1.0 serial: 277ade7b-18eb-4b1c-9bc5-53c523e71eb1 size: 465GiB capacity: 465GiB capabilities: primary journaled extended_attributes large_files huge_files dir_nlink recover extents ext4 ext2 initialized configuration: created=2013-10-15 21:14:47 filesystem=ext4 lastmountpoint=/media/hdd2 modified=2014-06-11 19:46:26 mount.fstype=ext4 mount.options=rw,relatime,data=ordered mounted=2014-06-11 19:46:26 state=mounted *-battery product: Smart Battery vendor: Intel Corp. physical id: 1 version: 2008 serial: 1.0 slot: Rear *-power UNCLAIMED description: TBD by ODM product: TBD by ODM vendor: TBD by ODM physical id: 2 version: 1.0 serial: TBD by ODM capacity: 32768mWh 

任何指示如何诊断或解决这个问题? 感谢名单!

—– EDIT1 ——

好的,我会根据请求进行扩展,我设置了一个简单的批处理文件,每2秒记录一次系统使用情况:

 #!/bin/bash STAMP=$(date +"%H_%M_%S") echo -e "** memory usage **\n" >> $STAMP free -mh >> $STAMP echo -e "\n** top 20 process by memory usage **\n" >> $STAMP ps aux --sort -rss | cut -c-120 | head -n 20 >> $STAMP echo -e "\n** top 10 process by cpu usage **\n" >> $STAMP ps aux --sort -c | cut -c-110 | head -n 10 >> $STAMP echo $STAMP 

然后我每隔2秒用手表跑一次并开始玩弄..

这是我的系统在零时刻的快照,我有一堆应用程序打开但一切顺利:

 ** memory usage ** total used free shared buffers cached Mem: 3,7G 3,5G 221M 458M 49M 914M -/+ buffers/cache: 2,6G 1,2G Swap: 3,8G 321M 3,5G ** top 20 process by memory usage ** USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND pablo 6649 0.0 7.7 885004 303968 ? Sl jun12 0:29 zeus command: server pablo 12849 0.4 5.6 1143948 221364 ? Sl jun12 3:23 /usr/lib/thunderbird/thunderbird pablo 6219 0.4 5.0 1320524 196468 ? Sl jun12 7:33 /opt/google/chrome/chrome --type=gpu-process --channel= pablo 6606 0.0 4.2 448240 166980 pts/24 Sl+ jun12 0:00 zeus slave: test_helper pablo 6578 0.0 4.0 430084 159872 pts/24 Sl+ jun12 0:02 zeus slave: test_environment pablo 6581 0.0 3.8 478248 149860 pts/24 Sl+ jun12 0:02 zeus slave: development_environment pablo 6599 0.0 3.8 479336 148716 pts/24 Sl+ jun12 0:00 zeus slave: prerake pablo 6646 0.0 3.7 478248 148372 ? Ssl jun12 0:03 zeus runner: server pablo 6183 0.7 3.7 1110824 148172 ? SLl jun12 12:44 /opt/google/chrome/chrome pablo 2467 1.3 3.1 1747564 122460 ? Sl jun11 25:31 compiz pablo 6573 0.0 3.0 361908 119024 pts/24 Sl+ jun12 0:01 zeus slave: default_bundle pablo 6497 0.0 2.7 341316 106412 pts/24 Sl+ jun12 0:00 zeus slave: boot pablo 21267 0.5 2.3 1065768 89972 ? Sl 02:34 0:06 /opt/google/chrome/chrome --type=renderer --lang=en-US pablo 21500 1.5 2.1 1057900 82376 ? Sl 02:46 0:06 /opt/google/chrome/chrome --type=renderer --lang=en-US pablo 21337 0.4 1.9 1053920 77052 ? Sl 02:38 0:04 /opt/google/chrome/chrome --type=renderer --lang=en-US pablo 21620 1.9 1.9 1049320 76592 ? Sl 02:50 0:03 /opt/google/chrome/chrome --type=renderer --lang=en-US pablo 21404 0.6 1.9 1051528 74452 ? Sl 02:41 0:04 /opt/google/chrome/chrome --type=renderer --lang=en-US root 1330 0.8 1.8 441088 72656 tty7 Ssl+ jun11 16:03 /usr/bin/X -core :0 -seat seat0 -auth /var/run/lightdm/ pablo 19127 0.0 1.7 1036788 70244 ? Sl jun12 0:07 /opt/google/chrome/chrome --type=renderer --lang=en-US ** top 10 process by cpu usage ** USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND pablo 21620 1.9 1.9 1049320 76592 ? Sl 02:50 0:03 /opt/google/chrome/chrome --type=renderer --l pablo 21500 1.5 2.1 1057900 82376 ? Sl 02:46 0:06 /opt/google/chrome/chrome --type=renderer --l pablo 2467 1.3 3.1 1747564 122460 ? Sl jun11 25:31 compiz pablo 21211 1.1 1.5 1022532 59316 ? Sl 02:30 0:15 /opt/google/chrome/chrome --type=renderer --l pablo 21379 1.0 0.6 802196 26116 ? Ssl 02:40 0:08 gvim snapshot pablo 21285 0.9 0.6 969072 24564 ? Sl 02:34 0:10 /opt/google/chrome/chrome --type=ppapi --chan pablo 21482 0.9 1.7 1039728 68976 ? Sl 02:45 0:04 /opt/google/chrome/chrome --type=renderer --l root 1330 0.8 1.8 441088 72656 tty7 Ssl+ jun11 16:03 /usr/bin/X -core :0 -seat seat0 -auth /var/ru pablo 6183 0.7 3.7 1110824 148172 ? SLl jun12 12:44 /opt/google/chrome/chrome 

这是我的系统在高负载下的快照,实际上打开了多个chrome标签,几乎没有响应:

 ** memory usage ** total used free shared buffers cached Mem: 3,7G 3,6G 155M 455M 17M 693M -/+ buffers/cache: 2,9G 866M Swap: 3,8G 347M 3,5G ** top 20 process by memory usage ** USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND pablo 6649 0.0 7.6 885004 299060 ? Sl jun12 0:29 zeus command: server pablo 21816 49.3 7.3 1215860 285332 ? Sl 02:53 0:13 /opt/google/chrome/chrome --type=renderer --lang=en-US pablo 6219 0.4 5.8 1336344 229096 ? Rl jun12 7:37 /opt/google/chrome/chrome --type=gpu-process --channel= pablo 12849 0.4 5.6 1143948 221360 ? Sl jun12 3:23 /usr/lib/thunderbird/thunderbird pablo 6606 0.0 4.2 448240 166936 pts/24 Sl+ jun12 0:00 zeus slave: test_helper pablo 6578 0.0 4.0 430084 159872 pts/24 Sl+ jun12 0:02 zeus slave: test_environment pablo 6581 0.0 3.8 478248 149860 pts/24 Sl+ jun12 0:02 zeus slave: development_environment pablo 6183 0.8 3.8 1244608 148912 ? SLl jun12 12:54 /opt/google/chrome/chrome pablo 6599 0.0 3.8 479336 148716 pts/24 Sl+ jun12 0:00 zeus slave: prerake pablo 6646 0.0 3.7 478248 148372 ? Ssl jun12 0:03 zeus runner: server pablo 2467 1.3 3.0 1747256 119924 ? Sl jun11 25:34 compiz pablo 6573 0.0 3.0 361908 119024 pts/24 Sl+ jun12 0:01 zeus slave: default_bundle pablo 6497 0.0 2.7 341316 106412 pts/24 Sl+ jun12 0:00 zeus slave: boot pablo 21267 0.5 2.3 1065768 89972 ? Sl 02:34 0:06 /opt/google/chrome/chrome --type=renderer --lang=en-US pablo 21958 44.0 2.1 1051856 83236 ? Sl 02:53 0:02 /opt/google/chrome/chrome --type=renderer --lang=en-US pablo 21500 1.4 2.1 1057900 82364 ? Sl 02:46 0:06 /opt/google/chrome/chrome --type=renderer --lang=en-US pablo 21620 1.6 1.9 1049320 76504 ? Sl 02:50 0:03 /opt/google/chrome/chrome --type=renderer --lang=en-US pablo 21337 0.4 1.9 1049824 75236 ? Sl 02:38 0:04 /opt/google/chrome/chrome --type=renderer --lang=en-US pablo 21404 0.6 1.9 1051528 74320 ? Sl 02:41 0:04 /opt/google/chrome/chrome --type=renderer --lang=en-US ** top 10 process by cpu usage ** USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND pablo 21816 49.3 7.3 1215860 285332 ? Sl 02:53 0:13 /opt/google/chrome/chrome --type=renderer --l pablo 21958 44.0 2.1 1051860 83236 ? Sl 02:53 0:02 /opt/google/chrome/chrome --type=renderer --l pablo 22012 25.0 1.0 988364 42900 ? Sl 02:53 0:00 /opt/google/chrome/chrome --type=renderer --l pablo 21620 1.6 1.9 1049320 76504 ? Sl 02:50 0:03 /opt/google/chrome/chrome --type=renderer --l pablo 21500 1.4 2.1 1057900 82364 ? Sl 02:46 0:06 /opt/google/chrome/chrome --type=renderer --l pablo 2467 1.3 3.0 1747256 119924 ? Sl jun11 25:34 compiz pablo 21211 1.0 1.5 1022532 59316 ? Sl 02:30 0:15 /opt/google/chrome/chrome --type=renderer --l pablo 21379 1.0 0.6 802196 26116 ? Ssl 02:40 0:08 gvim snapshot pablo 21285 0.9 0.7 979840 30956 ? Sl 02:34 0:11 /opt/google/chrome/chrome --type=ppapi --chan 

当内存开始变满时,为什么chrome会使用所有CPU? 即使铬是“罪魁祸首”,操作系统在重负载下仍然可以保持可操作性吗?

如果可能,添加更多内存。

关于内存不足的一般信息: 防止内存不足问题 (特定于Windows,但概念类似)

Linux内核提供了一个可调整的设置,可以控制交换文件的使用频率,称为“Swappiness”