I ran recently top and see that fwupd is taking more than 200% CPU whole the time. Can any one say what this firmware update is and what should i do to make him leave the CPU? I am on 16.04.
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I've upgraded my laptop (Lenovo Z50-70) which has an i7 CPU and 8Gigs of Ram to Ubuntu 16.04 from 15.10. I've been installing updates consistently. I'm using ubuntu with Gnome desktop environment (GDM).  Lately I've been experiencing a weird problem, my CPU (including all 4 cores) are 100% used by some processes like gnome-software(Gnome software) and fwupd(Firmware update daemon). This makes my work goes down. If i even kill those processes, they are starting back again.   Is there a solution for these processes to not utilize 100% of my CPU. And I don't want answers saying use the cpulimit utility to provision the amount of CPU for those processes. I find this a core problem in Ubuntu, i'm expecting real solutions for the problem.   What I've tried so far is, Removing those PPA's i've added except the official PPA's for checking updates. That didn't work out! Attached a screenshot of htop screen of these processes.
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I'm running Ubuntu 11.04 Beta 2. Is there a way, or a place, to give feedback on this system? Not file bugs, just give feedback.
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I keep receiving the following notification about new updates:    If I then run the Software Updater, however, I don't receive any of these updates on Ubuntu 16.04.    Does someone have the same problem?
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Hey guys I'm having some issue with my rtl8188ee network card. On Windows I get ~30-40 Mb/s whereas on Ubuntu 15.04 I get ~5 Mb/s. However, the issue comes and goes; often after disconnecting and reconnecting my WiFi temporarily jumps to the proper speed, only to recede again shortly.   In search for an answer I came across ; however I was unable to properly compile the driver (here's  I get when running make).  I was wondering if anyone knew how I could manage to compile the driver properly, or if anyone has another way to fix the slow WiFi speeds in Ubuntu 15.04.  In order to give as much information as possible, here are some diagnostic information:  uname --all:  Linux david-Lenovo-H535 3.19.0-21-generic #21-Ubuntu SMP Sun Jun 14 18:31:11 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux   lshw -C network:  *-network                   description: Ethernet interface    product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller    vendor: Realtek Semiconductor Co., Ltd.    physical id: 0    bus info: pci@0000:01:00.0    logical name: eth0    version: 09    serial: c0:3f:d5:72:be:6c    size: 10Mbit/s    capacity: 1Gbit/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 1000bt 1000bt-fd autonegotiation    configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8168f-1_0.0.5 06/18/12 latency=0 link=no multicast=yes port=MII speed=10Mbit/s    resources: irq:46 ioport:e000(size=256) memory:d0004000-d0004fff memory:d0000000-d0003fff  *-network    description: Wireless interface    product: RTL8188EE Wireless Network Adapter    vendor: Realtek Semiconductor Co., Ltd.    physical id: 0    bus info: pci@0000:04:00.0    logical name: wlan0    version: 01    serial: 28:e3:47:60:76:6f    width: 64 bits    clock: 33MHz    capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless    configuration: broadcast=yes driver=rtl8188ee driverversion=3.19.0-21-generic firmware=N/A ip=10.0.0.14 latency=0 link=yes multicast=yes wireless=IEEE 802.11bgn    resources: irq:48 ioport:d000(size=256) memory:fea00000-fea03fff     Edit  I successfully installed the new driver thanks to @Pilot6 but problem persists. For more information, my download is the only speed affected. Upload is consistent at 10 Mb/s. I really have no clue what to do at this point. I know the hardware is fine because in Windows I don't have any issues with wireless.  Second Edit  Disabling IPv6 worked for a while but speeds dropped back down again. Problem remains intermittent. I don't think this has to do with the wireless repeater I'm using because all other devices work fine. Further, upload speeds have been entirely consistent, so I doubt it has to do with the signal or interference.  Alas, 5 Mb/s is sufficient for my daily routine. I only hope a future update will solve the problem.
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Yesterday I was copying a single, 8 GB file to a USB with a slow, 7 MB/s write speed, while my RAM is 3 GB. While copying the system froze, to the point where I couldn't even move the cursor.  I managed to log into the text console, and ran iotop, it showed that a process named kswapd0 was taking 99.99% of IO.  Are there workarounds so copying a large file doesn't make my system unusable?
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I'm wondering what the theoretical speedup is from hyper threaded CPUs. Assuming 100% parallelization, and 0 communication - two CPUs would give a speedup of 2. What about hyper threaded CPU?
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I'm using WinXP, and I notice that in the Task Manager, on the Performance tab my CPU usage is 100%.  But When I go to the Processes tab, and sort by CPU System Idle Process is taking up 90%.  I've double checked that things like AVG anti-virus isn't actively scanning, and that jkdefrag is not defragging.  But I know something is taking CPU cycles, because the machine is very slow.  How do I determine which process is hammering the CPU if it doesn't show in the Process List?
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I'm trying to solve the mystery of a crazy high cpu usage on kernel_task.  MacBook Pro (Retina, Mid 2012), 2.7 GHz Intel Core i7, Yosemite 10.10.2  I saw some advice to download the Intel Power Gadget. That showed me that the my CPU is slowing way down. How do I fix this? When this happens, I can sometimes cycle the power on the MBP. But this is driving me crazy.
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I am facing same kind of problem of having sync_supers recreated on my server, which are using high CPU usage:  4353 www-data 20 0 24392 3888 1012 R 100.0 0.0 13:15.26 [sync_supers] 5268 www-data 20 0 24392 3888 1012 R 100.0 0.0 9:42.56 [sync_supers] 4344 www-data 20 0 24264 3744 876 R 99.7 0.0 70:22.26 [sync_supers] 6792 www-data 20 0 24392 3892 1012 R 85.5 0.0 7:16.08 [sync_supers]   I have deleted few but again recreated with different pid.  Please help. I am not expertised in Ubuntu and linux, so bit difficult to trace the issue.  Thank you very much.
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After upgrade from Ubuntu 17.10 to 18.04 the bootprocess takes 30s longer than before.  it stops for 30 seconds at the step     Begin: Running /scripts/local-premount   Then it continues.  At first it continued one step further to     scanning for btrfs file systems   so I , but that didn't help with the problem.  I see no notice of that step neither in dmesg nor in var/log/boot.log  How can I debug this problem? Can I enable additional logging?
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In the terminal I used "top" to check the processes and how much of the CPU was being used as I thought max was 100%, so I restored 292,000 photos with recoverjpeg on my sda1 HDD, I opened the folder and the Nautalis is  fluctuating between 130% and 170% , should I close the program and am I at risk of my gpu locking up ?
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I'm just wondering what I can look forward to in the next Ubuntu version.  In this case it's 16.04.  I also want to be able to speculate on what it's probably going to break and whether or not I should go through the hassle of writing some code that wont last more than a few months.  Where does one find an official feature list, or (as it appears to be) is there none?
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I have noticed that from some time my system is freezing and its probably caused by the high CPU usage which is caused by the system process.  All applications I'm running is the Skype, TeamSpeak and Chrome so it definitely shouldnt eat that amount of CPU.  You can see the problem itself and running processes in the screenshot below:    Sometimes CPU usage is reaching 90%, but the average usage is like 40-65%.  My PC parameters:   Windows 8 (customer preview) Intel Core i3 - 2350M 8 GB RAM   I'd appreciate any help attempt! Regards.  --UPDATE--  As the user below posted a great answer, I have noticed that the process that is eating the most CPU in the system is called Arthurx.sys, simple google tells that it's a TPLink driver (an wifi adapter, I have bought like 2 weeks ago!) drivers has been installed from the Windows MSDN, but also tried to install the drivers from the attached CD, but it doesn't help. From the system start, it is using like 5% of the CPU only, but after 2-4 hours of working it is growing up and reaching 40-60% of the CPU usage.  Device name: TPLink WN722N
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What are your tips for improving overall system performance on ubuntu? Inspired by this  I realized that some default settings may be rather conservative on Ubuntu and that it's possible to tweak it with little or no risk if you wish to make it faster.  This is not meant to be application specific (e.g. make firefox load pages faster), but system wide.  Preferably 1 tip per answer, with enough detail for people to implement it.  A couple of mine would be:   Install  (via Software Center or sudo apt-get install preload); Change  value - "which controls the degree to which the kernel prefers to swap when it tries to free memory";   What are yours?  PS: Since this is not intended to have a unique answer but rather, several useful tips, I'm making this community wiki out-of-the-box.
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This dreaded issue started at some time after upgrade to OS X (Yosemite) 10.10.3. accountsd uses about 60% CPU constantly, making the laptop hot and noisy.  I'm not using iCloud at all.  Killing it doesn't help, because it starts again quickly.  Probably related question, but it's about iOS:
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Lately, when I update, the process sticks on get deb:     [Connecting to archive.getdeb.net (144.76.200.19)]   The site -  - times out and the cloudflare message is in no way helpful.  Does anyone know why this repo and site are down? or perhaps anything else about it?  Thanks.
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For you that have tested this, should we use Ubuntu and install different Desktop Environments (KDE/XFCE...) or we should install different distributions (Kubuntu/Xubuntu...). Are there any notable issues in performance / CPU consumption?  PS:  I know how to install them (already did), I wanted to know if anyone has any problems regarding the performance and what is better to install the desktop or to use the ditribution