Wifi makes CPU usage over 130%

Hi
I am on a laptop and I have Intel® Core™ i7-4500U CPU @ 1.80GHz × 4
when I turn wifi on I have a huge battery drain and when I run "powertop" in terminal it shows the cpu usage (50%-130%)
my wifi card is MEDIATEK (MT7630e)
this is the "Device stats " from powertop:
The battery reports a discharge rate of 18.3 W
Usage Device name
90.4% CPU core
90.4% CPU misc
90.4% DRAM
40.1 ops/s GPU core
40.1 ops/s GPU misc
22.0% Display backlight
100.0% USB device: KSL81P304 (KOSEL)
100.0% USB device: xHCI Host Controller
100.0% USB device: SiS HID Touch Controller (USBest Technology)
100.0% Radio device: rt2800pci
100.0% Radio device: asus-nb-wmi
any help?

Head_on_a_Stick wrote:
Open a terminal & run this command:
journalctl -xf
Then turn on your wifi and see what errors show up in the terminal window.
<error> [1430854709.687934] [platform/nm-linux-platform.c:2357] link_change(): Netlink error changing link 3: <UP> mtu 0 (1) driver 'rt2800pci' udi '/sys/devices/pci0000:00/0000:00:1c.3/0000:03:00.0/net/wlp3s0f0': Unspecific failure

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For Fritch's thread and install guide for Ubuntu:
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What you get:
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Hello everyone,
I just bought a new Mac Mini Server (2,6GHz, 4GB memory, with Mac OS X Snow Leopard Server and 10.6.5)
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The clients are all linux systems and have access to their home directories via NFS.
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http://discussions.apple.com/thread.jspa?messageID=11089358
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Message was edited by: ben_k42

hi raleigh,
thank you for your suggestion. I turned verbose mode on and restarted.
Then I started to start my clients. This is what I got in /var/log/system.log
Dec 1 18:49:22 server rpc.statd[72]: Failed to contact host clientName: RPC: Port mapper failure - RPC: Timed out
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Dec 1 18:54:01: --- last message repeated 15 times ---
Dec 1 18:53:22 server rpc.lockd[138]: *** process 138 exceeded 500 log message per second limit - remaining messages this second discarded ***
This looks kind of strange to me.
I checked for the RPC ports:
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100000 4 tcp 111 portmapper
100000 3 tcp 111 portmapper
100000 2 tcp 111 portmapper
100000 4 udp 111 portmapper
100000 3 udp 111 portmapper
100000 2 udp 111 portmapper
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111/tcp open rpcbind
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how can I make him tell me those messages?
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Ben
PS: a few additional hints.
I ran: fs_usage -w rpc.lockd
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Another thing which catched my eye, was when I inspected the process in the Activity Monitor.
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Also, I sampled the rpc.lockd process as it was running with max cpu, maybe someone can read something out of there:
2157 select$DARWIN_EXTSN
This is running over and over again.
Analysis of sampling rpc.lockd (pid 9985) every 1 millisecond
Call graph:
2633 Thread_52623 DispatchQueue_1: com.apple.main-thread (serial)
2633 0x13776330c
2633 0x137767ea8
2161 0x137766fd2
2157 select$DARWIN_EXTSN
4 0x137766fd2
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1 0x137766f9a
32 0x13776700f
32 gettimeofday
25 __gettimeofday
14 __nanotime
11 __gettimeofday
7 gettimeofday
25 0x137766fac
21 __memcpy
2 0x137766fac
1 __bcopy
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10 0x137767059
7 0x13776931f
3 0x1377680fb
2 0x13776812d
1 0x137768115
1 0x137768165
1 0x137769309
1 0x13776930d
1 0x137769394
5 0x137767029
3 svc_getreqset
2 0x137767029
4 dyld_stub_getdtablesize
3 dyld_stub_svc_getreqset
2 0x137766f9c
2 0x137766fd4
2 dyld_stub_bcopy
1 0x137766fa4
1 0x137766fc6
1 dyld_stub_select$DARWIN_EXTSN
Total number in stack (recursive counted multiple, when >=5):
Sort by top of stack, same collapsed (when >= 5):
select$DARWIN_EXTSN 2157
getdtablesize 383
__memcpy 21
__nanotime 14
__gettimeofday 11
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Attachments:
target save.vi ‏328 KB

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EtreCheck version: 1.9.12 (48)
Report generated 3 August 2014 12:38:14 BST
Hardware Information:
MacBook Pro (13-inch, Early 2011) (Verified)
MacBook Pro - model: MacBookPro8,1
1 2.7 GHz Intel Core i7 CPU: 2 cores
4 GB RAM
Video Information:
Intel HD Graphics 3000 - VRAM: 384 MB
Color LCD 1280 x 800
System Software:
OS X 10.9.4 (13E28) - Uptime: 1 day 8:2:57
Disk Information:
WDC WD5000LPVX-00V0TT0 disk0 : (500.11 GB)
EFI (disk0s1) <not mounted>: 209.7 MB
Macintosh HD (disk0s2) / [Startup]: 499.25 GB (121.06 GB free)
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Apple Inc. FaceTime HD Camera (Built-in)
Apple Inc. Apple Internal Keyboard / Trackpad
Apple Inc. BRCM2070 Hub
Apple Inc. Bluetooth USB Host Controller
Thunderbolt Information:
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Flash Player: Version: 14.0.0.145 - SDK 10.6 Support
QuickTime Plugin: Version: 7.7.3
JavaAppletPlugin: Version: 14.9.0 - SDK 10.7 Check version
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AirPlay: Version: 2.0 - SDK 10.9
AppleAVBAudio: Version: 203.2 - SDK 10.9
iSightAudio: Version: 7.7.3 - SDK 10.9
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Time Machine:
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394 MB Inactive RAM
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The kernel is using excessive processor cycles. Below are some possible causes for the condition.
Throttling
When it gets high temperature readings from the hardware, or a low-voltage reading from the battery, the kernel may try to compensate by interrupting the processor(s) to slow them down and reduce power consumption. This condition can be due to:
☞ a buildup of dust on the logic board
☞ high ambient temperature
☞ a worn-out or faulty battery in a portable
☞ the malfunction of a cooling fan, a temperature sensor, a voltage sensor, or some other internal component
Note that if the problem is caused by a sensor, there may be no actual overheating or undervoltage.
If the computer is portable, test with and without the AC adapter connected. If kernel_task hogs the processor only on battery power, the fault is in the battery or the logic board. If it happens only on AC power, charging is causing the machine to heat up. That may be normal on some models. CPU usage should drop when charging is complete.
Apple Diagnostics or the Apple Hardware Test, though not very reliable, is sometimes able to detect a fault. For more thorough hardware testing, make a "Genius" appointment at an Apple Store, or go to another authorized service provider.
If nothing is wrong with the hardware, then whatever you can do to improve cooling may help.
Installed software
User-installed software that includes a device driver or other kernel code may thrash the kernel. That category includes virtualization software, such as Parallels and VMware, as well as most commercial "anti-virus" products. Some system-monitoring applications, such as "iStat," can also contribute to the problem. You can test for this possibility by completely disabling or removing the software according to the developer's instructions, or starting in safe mode. Note, however, that disabling a system modification without removing it or testing in safe mode may not be as easy as you think.
Corrupt NVRAM or SMC data
Sometimes the problem is cleared up by resetting the NVRAM or the SMC.
External display
Connecting an external LCD display to some MacBook Pro models while the lid is open may cause this issue. If applicable, test by closing the lid or disconnecting the display. You might get better results with a newer LED display.

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It is a problem with games in general: they use a lot of CPU power (and heat the CPU up correspondingly). Over 100% is not very spectacular, because modern CPUs have 2, 4 or 8 cores, and each has a maximum of 100%. If you have a 4 cores cpu the run escape is taking almost 45% which is a lot.

Flash player 11 is very glitchy on ALL browsers and makes my CPU usage 100%,Streaming media headache

flash player 11 is very glitchy on ALL browsers and makes my CPU usage 100%, making all youtube and pandora or any streaming media a headache, i have a low-end but good quality Emachine with Windows 7 Sv pk. 1, AMD Athalon Processor 2650e 1.6 GHz 2GB ram 32-bit, which isn't that bad, it used to play HD videos and everything without a skip or lag, it is virus clean, and clean of any large bulky programs, the only thing that went wrong was the fact that the adobe flash updates slowly but surely made it worse, AND it will not let me roll-back to an older version anymore like it used to, so WTF is up? no one seems to have an answer for this, and it seems like ADOBE is doing everything in it's power to not let me ask this question or get it solved, maybe it's because I AM TOO SMART FOR IT AND KNOW IT'S A FAILURE. so please, anyone who actually has a degree in this field is welcome, but no BS anymore, i want answers.
[moved to Flash Player forum]
Message was edited by: sinious

The jump to FP11 was pretty significant with Stage3D. Now Flash Player has a lower level access to your computers GPU to offload playing video and 3d rendering to the GPU. However if your systems GPU isn't up to the task you really won't see that performance gain.
Enter H264 video decoding. A large segment of the Flash usage market is simply viewing video. For sites without fallback in mind (or don't mind software rendering fallback), video may suffer. Using the GPU accelerated video classes may make it difficult for your system to view playback. Disabling hardware acceleration as recommended above would revert you back to software (CPU) decoding to check if your system itself is the issue (and not all the new GPU additions). You did that yet you're still having an issue.
Just to clarify, as I have an eMachine (for accounting), your computer is very much in the "budget" margin. You have a 3 year old single core 1.6ghz AM2 CPU with 512kb of L2. That's the K8 series. This is a very underpowered, single thread loving CPU. Only the most optimized Flash sites and lower end videos (720p or below) should play, but I'm not even sure if they'll "play well". It depends on your GPU.
Also you should know they have an official list of unsupported chipsets and drivers based on many factors. Here's a list for FP11 and AIR3:
http://helpx.adobe.com/x-productkb/multi/stage3d-unsupported-chipsets-drivers-flash.html
Check the bottom of the screen to see what Flash is reporting your rendering mode is. For example, mine states:
Your gpu supports Stage3D in both Baseline and Constrained profile!
Baseline RenderMode:
DirectX9
Constrained RenderMode:
DirectX9 (Baseline Constrained)
This probably won't get better in the future for you. Flash is not a low end multimedia runtime. It does require and utilize high end hardware in a much more reliable way.

Qosmio X775 - CPU usage is over 99%

I have a Qosmio x775 and while (im not gonna lie) i was playing LoL, somehow evverything started to go slower. My mouse barely moved, so i quit everything and turned off my qosmio.
Then i turned in again and the problem got worse.
It took like a minute to open the start menu. So i opened the task manager and watched the cpu usage went from 24% to 99, 100%,
So i started to end useless, yet cpu consuming processes and somehow my laptop went back to normal.
I'm about to scan it with my antivirus and im gonna erase stuff i dont need, but i just want to know what could happened and how to avoid it when it happen again?

I agree with Joe.
Have you noticed this from the first day of usage or later?
What you can try is to stop some useless background processes to see what will happen after doing this.
Which antivirus application do you use?
If you use original preinstalled OS disable or stop Tempro and Toshiba service station tool. They are pretty active in the background. Original preinstalled McAffe needs much resources too.
Play a bit with all this stuff and check in task manager which application or process make CPU so busy.

Wifi makes CPU usage over 130%

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