Distnoted, heavy cpu usage

Hello,
System
OS X Yosemite 10.10.1 (14B25)
MacBook Pro (Retina, Mid 2012)
2.7 GHz Intel Core i7
16 GB 1600 MHz DDR3
I'm trying to figure out why the distnoted process is running rampant on my system all of a sudden. It will spin up the CPU to 320% or so for a few minutes, and sometimes causes my system to shut down. This is a major issue when on battery power.
I have searched many sources and have seen eMac memory leak updates and such but I don't have an eMac. I've did a clean installation of OS X Yosemite and all of the applications and all was well until recently, this one has me stumped.
Here's a snippet of my console log, this is at the very end of the issue.
... previous entries above
12/27/14 01:54:24.004 nsurlstoraged[249]: DiskCookieStorage changing policy from 2 to 0, cookie file: file:///Users/USERNAME/Library/Cookies/Cookies.binarycookies
12/27/14 01:54:24.004 nsurlstoraged[249]: DiskCookieStorage changing policy from 0 to 2, cookie file: file:///Users/USERNAME/Library/Cookies/Cookies.binarycookies
12/27/14 01:54:25.000 nsurlstoraged[249]: DiskCookieStorage changing policy from 0 to 2, cookie file: file:///Users/USERNAME/Library/Cookies/Cookies.binarycookies
12/27/14 01:54:25.001 nsurlstoraged[249]: DiskCookieStorage changing policy from 2 to 0, cookie file: file:///Users/USERNAME/Library/Cookies/Cookies.binarycookies
12/27/14 01:54:25.002 nsurlstoraged[249]: DiskCookieStorage changing policy from 0 to 2, cookie file: file:///Users/USERNAME/Library/Cookies/Cookies.binarycookies
12/27/14 01:54:25.003 nsurlstoraged[249]: DiskCookieStorage changing policy from 2 to 0, cookie file: file:///Users/USERNAME/Library/Cookies/Cookies.binarycookies
12/27/14 01:54:25.003 nsurlstoraged[249]: DiskCookieStorage changing policy from 0 to 2, cookie file: file:///Users/USERNAME/Library/Cookies/Cookies.binarycookies
12/27/14 01:54:25.004 nsurlstoraged[249]: DiskCookieStorage changing policy from 2 to 0, cookie file: file:///Users/USERNAME/Library/Cookies/Cookies.binarycookies
12/27/14 01:54:25.004 nsurlstoraged[249]: DiskCookieStorage changing policy from 0 to 2, cookie file: file:///Users/USERNAME/Library/Cookies/Cookies.binarycookies
12/27/14 01:54:25.005 nsurlstoraged[249]: DiskCookieStorage changing policy from 2 to 0, cookie file: file:///Users/USERNAME/Library/Cookies/Cookies.binarycookies
12/27/14 01:54:25.005 nsurlstoraged[249]: DiskCookieStorage changing policy from 0 to 2, cookie file: file:///Users/USERNAME/Library/Cookies/Cookies.binarycookies
12/27/14 01:54:25.006 nsurlstoraged[249]: DiskCookieStorage changing policy from 2 to 0, cookie file: file:///Users/USERNAME/Library/Cookies/Cookies.binarycookies
12/27/14 01:55:46.077 Dock[254]: void CGSShmemReleaseMappedMemory(CGSShmemID): failed to find shmem ID 18246.
12/27/14 01:56:22.152 Dock[254]: void CGSShmemReleaseMappedMemory(CGSShmemID): failed to find shmem ID 18303.
... end
Any insight would be helpful.

Use Applications/Utilities/Activity Monitor to find out.
Activity Monitor - Mavericks also Yosemite
Activity Monitor in Mavericks has significant changes

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Welcome morgwai
Probably your heatsink is clogged with dusk or the thermal paste between your heatsink and Intel CPU dried up, causing poor heat transfer. Even in full load, the CPU temp should not exceed 90C.
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Give kudos to reward people for their assistance | Mark the thread solved if the solution works | Please do not send me an e-mail regarding technical questions | I am not an Lenovo employee
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Having Issues with High CPU Usage with fluxbox & pekwm

Greetings,
I have searched for this issue and it seems that something similar has happened in the past with an old xorg, and it seems that someone is having a similar issue that they can point to kde as being the culrpit. However in my case, this is a fresh install and is not using any kde libs. Please allow me to explain the issue.
The power supply on my main computer finally gave out, and being incredibly poor at the moment I can not yet replace it. So, I pull out an older computer that I had once set up for my kids, but took it away from them when they were abusing it. I always make backup dvds and such monthly so I didn't have to worry about any lose of data, however I desired to keep my larger hard drives from my main computer. After testing to ensure that the hard drives were fine, I did some minor surgery, and did a fresh install of arch linux onto my back up computer. Since I prefer pekwm, I installed pekwm as my wm of choice, and outfitted it quickly with mpd+sonata, firefox, pcmanfm, and tint2. Then I rebooted into my pekwm 'desktop'.
It was running sluggish. Firefox was easily maxing the cpu up and beyond 100% and it felt ten times worse than any heavy DE I used in the past. I checked to make sure I had the right video driver installed. As this computer runs a 64MB nVidia GeForce2 MX with TV out video card, I searched nvidia's page and the arch wiki, noting that the driver needed is nvidia-96xx. Well I had already suspected that during install, and thus had installed such driver. I double checked my xorg.config and it has the right driver listed.
So I checked out some lighter browsers. I tried both Midori and Iron (which is similar to Chrome but without google spyware or whatever). Well both run better than firefox, Midori being the lightest one, but Iron quickly being my favorite. Still, the problem remained. Moving windows caused cpu spikes, opening more than one tab, or more than one program caused cpu spikes and the computer to slow down and sputter, freezing at times.
So I tried out another wm, fluxbos, which is another of my favorites. Seemed somewhat better but only fractionally, which I consider odd because pekwm has always seemed snappier than fluxbox to me in the past. Running lxtask (still mouse dependent, sorry lol), I was able to take note of the following...
FLUXBOX
lxtask 6% CPU usage average
PCManFM 5% CPU Average
Fluxbox 1% to 2% cpu usage
gksu 3% cpu usage
pidgin 3% to 7% cpu usage
firefox up to 62% cpu usage
midori up to 38% cpu usage
iron up to 50% cpu usage
mpd 11% cpu uage
Xorg (with no window movement) 2% cpu usage
Xorg (moving windows around) up to 80% cpu usage
PEKWM
lxtask 6% CPU
pidgin 7% cpu
tint2 1% cpu
pekwm 1% to 5% cpu
pcmanfm 7% cpu
firefox up to 85% cpu
python 1% cpu
midori up to 38% cpu
iron up to 25% cpu (odd...)
Xorg (with no window movement) 1% cpu
Xorg (when moving windows around) up to 80% cpu
Both were using around 118 MB RAm and weren't yet touching swap. As I see it I am thinking xorg or video driver related, yet I already made sure that I had the correct video driver. Here's my Xorg.conf
# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig: version 1.0 (buildmeister@builder63) Thu Jun 25 18:57:07 PDT 2009
Section "ServerLayout"
Identifier "Layout0"
Screen 0 "Screen0" 0 0
InputDevice "Keyboard0" "CoreKeyboard"
InputDevice "Mouse0" "CorePointer"
EndSection
Section "Files"
EndSection
Section "InputDevice"
# generated from default
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "auto"
Option "Device" "/dev/psaux"
Option "Emulate3Buttons" "no"
Option "ZAxisMapping" "4 5"
EndSection
Section "InputDevice"
# generated from default
Identifier "Keyboard0"
Driver "kbd"
EndSection
Section "Monitor"
Identifier "Monitor0"
VendorName "Unknown"
ModelName "Unknown"
HorizSync 30.0 - 110.0
VertRefresh 50.0 - 150.0
Option "DPMS"
EndSection
Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
EndSection
Section "Screen"
Identifier "Screen0"
Device "Device0"
Monitor "Monitor0"
DefaultDepth 24
SubSection "Display"
Depth 24
Modes "1600x900" "1024x768" "800x600" "640x480"
EndSubSection
EndSection
Here's some specs on this computer, including video cards and such...
Computer
Summary
Computer
Processor Intel(R) Pentium(R) 4 CPU 1.60GHz
Memory 1034MB (239MB used)
Operating System Arch Linux
User Name mythus (Travis K. Randall)
Date/Time Thu 08 Oct 2009 05:24:52 PM CDT
Display
Resolution 1600x900 pixels
OpenGL Renderer GeForce2 MX/AGP/SSE2
X11 Vendor The X.Org Foundation
Multimedia
Audio Adapter ICH - Intel 82801BA-ICH2
Input Devices
Macintosh mouse button emulation
AT Translated Set 2 keyboard
Power Button
Power Button
PC Speaker
Logitech USB Optical Mouse
Printers
No printers found
SCSI Disks
ATA ST3160212A
ATA IC35L090AVV207-0
LITE-ON LTR-16102B
TSSTcorp CD/DVDW TS-H552D
Operating System
Version
Kernel Linux 2.6.30-ARCH (i686)
Compiled #1 SMP PREEMPT Wed Sep 9 12:37:32 UTC 2009
C Library GNU C Library version 2.10.1 (stable)
Default C Compiler GNU C Compiler version 4.4.1 (GCC)
Distribution Arch Linux
Current Session
Computer Name norova
User Name mythus (Travis K. Randall)
Home Directory /home/mythus
Desktop Environment Unknown (Window Manager: Fluxbox)
Misc
Uptime 11 hours, 38 minutes
Load Average 0.20, 0.38, 0.34
Kernel Modules
Loaded Modules
ipv6 IPv6 protocol stack for Linux
reiserfs ReiserFS journaled filesystem
usbhid USB HID core driver
hid
arc4 ARC4 Cipher Algorithm
ecb ECB block cipher algorithm
snd_seq_dummy ALSA sequencer MIDI-through client
rt2500pci Ralink RT2500 PCI & PCMCIA Wireless LAN driver.
snd_seq_oss OSS-compatible sequencer module
rt2x00pci rt2x00 pci library
snd_seq_midi_event MIDI byte <-> sequencer event coder
rt2x00lib rt2x00 library
snd_seq Advanced Linux Sound Architecture sequencer.
led_class LED Class Interface
snd_seq_device ALSA sequencer device management
input_polldev Generic implementation of a polled input device
mac80211 IEEE 802.11 subsystem
snd_intel8x0 Intel 82801AA,82901AB,i810,i820,i830,i840,i845,MX440; SiS 7012; Ali 5455
uhci_hcd USB Universal Host Controller Interface driver
snd_pcm_oss PCM OSS emulation for ALSA.
fan ACPI Fan Driver
cfg80211 wireless configuration support
ppdev
ehci_hcd USB 2.0 'Enhanced' Host Controller (EHCI) Driver
snd_mixer_oss Mixer OSS emulation for ALSA.
snd_ac97_codec Universal interface for Audio Codec '97
nvidia
lp
eeprom_93cx6 EEPROM 93cx6 chip driver
parport_pc PC-style parallel port driver
ohci1394 Driver for PCI OHCI IEEE-1394 controllers
parport
psmouse PS/2 mouse driver
ac97_bus
ieee1394
serio_raw Raw serio driver
8139too RealTek RTL-8139 Fast Ethernet driver
e100 Intel(R) PRO/100 Network Driver
snd_pcm Midlevel PCM code for ALSA.
pcspkr PC Speaker beeper driver
battery ACPI Battery Driver
8139cp RealTek RTL-8139C+ series 10/100 PCI Ethernet driver
snd_timer ALSA timer interface
i2c_core I2C-Bus main module
iTCO_wdt Intel TCO WatchDog Timer Driver
mii MII hardware support library
evdev Input driver event char devices
snd Advanced Linux Sound Architecture driver for soundcards.
ac ACPI AC Adapter Driver
iTCO_vendor_support Intel TCO Vendor Specific WatchDog Timer Driver Support
usbcore
soundcore Core sound module
sg SCSI generic (sg) driver
shpchp Standard Hot Plug PCI Controller Driver
snd_page_alloc Memory allocator for ALSA system.
processor ACPI Processor Driver
thermal ACPI Thermal Zone Driver
pci_hotplug PCI Hot Plug PCI Core
intel_agp
button ACPI Button Driver
agpgart AGP GART driver
rtc_cmos Driver for PC-style 'CMOS' RTCs
rtc_core RTC class support
rtc_lib
ext4 Fourth Extended Filesystem
mbcache Meta block cache (for extended attributes)
jbd2
crc16 CRC16 calculations
sr_mod SCSI cdrom (sr) driver
cdrom
sd_mod SCSI disk (sd) driver
ata_piix SCSI low-level driver for Intel PIIX/ICH ATA controllers
ata_generic low-level driver for generic ATA
pata_acpi SCSI low-level driver for ATA in ACPI mode
libata Library module for ATA devices
floppy
scsi_mod SCSI core
Display
Display
Display
Resolution 1600x900 pixels
Vendor The X.Org Foundation
Version 1.6.3.901
Monitors
Monitor 0 1600x900 pixels
Extensions
BIG-REQUESTS
Composite
DAMAGE
DOUBLE-BUFFER
DPMS
DRI2
GLX
Generic Event Extension
MIT-SCREEN-SAVER
MIT-SHM
NV-CONTROL
NV-GLX
RANDR
RECORD
RENDER
SECURITY
SHAPE
SYNC
X-Resource
XC-MISC
XFIXES
XFree86-DGA
XFree86-VidModeExtension
XINERAMA
XInputExtension
XKEYBOARD
XTEST
XVideo
OpenGL
Vendor NVIDIA Corporation
Renderer GeForce2 MX/AGP/SSE2
Version 1.5.8 NVIDIA 96.43.13
Direct Rendering Yes
Processor
Processor
Processor
Name Intel(R) Pentium(R) 4 CPU 1.60GHz
Family, model, stepping 15, 1, 2 (Pentium 4)
Vendor Intel
Configuration
Cache Size 256kb
Frequency 1594.77MHz
BogoMIPS 3190.44
Byte Order Little Endian
Features
FDIV Bug no
HLT Bug no
F00F Bug no
Coma Bug no
Has FPU yes
Cache
Cache information not available
Capabilities
fpu Floating Point Unit
vme Virtual 86 Mode Extension
de Debug Extensions - I/O breakpoints
pse Page Size Extensions (4MB pages)
tsc Time Stamp Counter and RDTSC instruction
msr Model Specific Registers
pae Physical Address Extensions
mce Machine Check Architeture
cx8 CMPXCHG8 instruction
apic Advanced Programmable Interrupt Controller
sep Fast System Call (SYSENTER/SYSEXIT)
mtrr Memory Type Range Registers
pge Page Global Enable
mca Machine Check Architecture
cmov Conditional Move instruction
pat Page Attribute Table
pse36 36bit Page Size Extensions
clflush Cache Line Flush instruction
dts Debug Store
acpi Thermal Monitor and Software Controlled Clock
mmx MMX technology
fxsr FXSAVE and FXRSTOR instructions
sse SSE instructions
sse2 SSE2 (WNI) instructions
ss Self Snoop
ht HyperThreading
tm Thermal Monitor
up smp kernel running on up
pebs Precise-Event Based Sampling
bts Branch Trace Store
Memory
Memory
Total Memory 1034084 kB
Free Memory 94276 kB
Buffers 40536 kB
Cached 700112 kB
Cached Swap 0 kB
Active 170788 kB
Inactive 726844 kB
Active(anon) 74112 kB
Inactive(anon) 88348 kB
Active(file) 96676 kB
Inactive(file) 638496 kB
Unevictable 12 kB
Mlocked 12 kB
High Memory 139144 kB
Free High Memory 252 kB
Low Memory 894940 kB
Free Low Memory 94024 kB
Virtual Memory 2931852 kB
Free Virtual Memory 2931852 kB
Dirty 12 kB
Writeback 0 kB
AnonPages 156996 kB
Mapped 57392 kB
Slab 24260 kB
SReclaimable 18864 kB
SUnreclaim 5396 kB
PageTables 1376 kB
NFS_Unstable 0 kB
Bounce 0 kB
WritebackTmp 0 kB
CommitLimit 3448892 kB
Committed_AS 404212 kB
VmallocTotal 122880 kB
VmallocUsed 27648 kB
VmallocChunk 52368 kB
DirectMap4k 32760 kB
DirectMap4M 876544 kB
Benchmarks
CPU Blowfish
CPU Blowfish
This Machine 1595 MHz 50.176
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 1595 MHz 11.071
CPU Fibonacci
CPU Fibonacci
This Machine 1595 MHz 74.202
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 1595 MHz 132.704
FPU FFT
FPU FFT
This Machine 1595 MHz 104.630
FPU Raytracing
FPU Raytracing
This Machine 1595 MHz 212.639
Intel(R) Celeron(R) M processor 1.50GHz (null) 40.8816714
PowerPC 740/750 (280.00MHz) (null) 161.312647
So what I am wanting help with is finding the solution to the cpu usage so that I can use this computer at least until I can afford a new power supply or whatever. I am open to any good suggestions, though I must state I am not really interested in tiling wm's at the moment. I am just not a true minimalist.
Thanks in advance for any and all help. I understand that there is a lot of info in this post, but it is my hope that with this info the problem can be solved. If there is info I didn't provide that is needed, please let me know.

also check that you have
session.screen0.opaqueMove false
in your .fluxbox/init this will probably help a bit if it is currently true,
Last edited by Cyrusm (2009-01-26 13:52:13)

High cpu usage after a while

Sometimes, after a while, firefox (36.0.4) uses up 1 core of my CPU (is a quad core due to hypertreading). The way it happens is really strange. Many tabs without a problem until suddenly ff decides to floor it. This is alway in the run, not on startup or close. All add-ons need to ask my permissions to be activated, this includes flash.
On close, I ordered ff to clear all history and cookies.
Notes that could be important (The behavior encountered while using it. This varies from time to time):
opening new tabs (a lot or a few) => "heavy" load during site loading, then idling
==> The above makes sense
- same as above but load continues to be heavy. => could be some badly written javascript on the site, however, sometimes this occurs with sites I know have no stressful javascript
==> The above seems odd
- Browser is idle in the background (not actively using it). Then all of the sudden "lets floor it until closed".
==> The above seems pretty odd
- When confronted with high CPU usage, closing ff doesn't close it (the ff process remains active. Not a ff process, THE ff process). => High CPU usage remains
==> The above looks like that there is definitely something wrong here
This last one has some other things to keep in mind
- When it happens and I close ff, upon restarting it it will ALWAYS ask to close ff. After confirming to close it, it will start and behave normally.
- When killing ff via the task-manager, or other means like powershell commands, restarting it will result in an idle ff even after every tab is loaded again.
I hope this isn't a heisenbug and there is a solution to this, a reboot ff button would be a nice workaround though. I personally think that it must be some routine in the code that decides to go nuts for no reason.
If you need further details, feel free to ask.
Thanks in advance

Tried those before and tried them again. Unfortunately, the problem keeps repeating itself at random times. As said, sometimes it doesn't occur and sometimes suddenly it does. Keep the following things in mind about this, what seems like a heisenbug, behavior.
- opening new tabs (a lot or a few) => "heavy" load during site loading, then idling
==> The above makes sense
- same as above but load continues to be heavy. => could be some badly written javascript on the site, however, sometimes this occurs with sites I know have no stressful javascript
==> The above seems odd
- Browser is idle in the background (not actively using it). Then all of the sudden "lets floor it until closed".
==> The above seems pretty odd
- When confronted with high CPU usage, closing ff doesn't close it (the ff process remains active. Not a ff process, THE ff process). => High CPU usage remains
==> The above looks like that there is definitely something wrong here
As stated, a reboot ff button would be a nice workaround. I personally think that something like a tread must get stuck in some sort of infinite loop. Browsing in ff works just fine though. I just don't like the fact that I turns into a "gasoline guzzler".
Again, thanks in advance

Why does Back to My Mac slow to a crawl under heavy GPU usage?

I run Back to My Mac so that I can access my Mac Mini sitting at home from wherever I am on the road using my Macbook Pro.
I noticed that even with next to nil CPU usage, Back to My Mac runs normally when I have nothing else running, but slows to a crawl when I have GPU-intensive applications such as BOINC or Asteroid running.
What's even more weird is that screen updates seem to be timely and I can see what's happening on the computer in real-time right away. What becomes completely unresponsive are mouse clicks and keyboard presses, which I would think use a very miniscule amount of bandwidth and CPU. Most of the heavy lifting for a remote screen sharing session is actually transferring what's showing on the screen over the Internet, right?
Does anyone know if this is a reported bug and if there's an upcoming fix for this?
The Mac Mini I'm using is a Late 2009 with 8GB RAM and an SSD inside.
The MacBook Pro I'm using is a Late 2011 with 16GB RAM and an upgraded hybrid hard drive.
Both are running the latest version of Mavericks with all system updates installed.

Here is how I fixed it, sort of. I configured the Time Capsule (TC) in Bridge Mode behind the AT&T Gateway. Connected the TC to Gateway with ethernet cable. Port 3 of Gateway to WAN port on TC (the one with the circle above it). My desktop iMac is wired to a port on the TC. If the iMac is asleep, it will not be visible to a laptop (in the laptop sidebar) on the WAN side of the Gateway or one using the Gateway wireless network.
I set the iMac, using Energy Saver, so that the CPU never goes to sleep. Unless I force the iMac into sleep mode, it is now visible to a laptop on the WAN side of the Gateway and using the Gateway wireless network. "Wake for network access" has always been checked. Everything seems to work now with Back to my Mac as advertised.

Feature request: Monitor, manage IE - CPU usage

I was wondering if this is the right place to make a feature request. As it happens when surfing with IE, having many tabs open, pretty quickly CPU usage can reach 100% even on multi core system. Presumably some website manage to run out-of-control scripts
in the background.
The real problem is now that I cannot tell which tabs produces which CPU load. All that task manager shows is the IE process with the tabs and the overall CPU usage for the process.
Regarding monitoring it would help to identify the tabs (website) which cause the heavy load. This could be added to task manager.
Further, to manage the tabs it should be possible to either start each tab in its own process
or perhaps better, have the ability to put unused tabs in 'hibernation' causing all scripts to pause there.

Hi,
you can post 'feature' requests to the IETeam at
http://connect.microsoft.com/ie
Task Manager in current windows versions lists all IE Tab processes.... Sort the process list by cpu usage to identify hungry tabs.
Typically high cpu usage is caused by
Web browser addons, incorrect browser settings (use gpu instead of hardware rendering) and flash or poorly designed websites or missing updates to your windows or third-party software. You may like to try running your browser in noAddons mode to see if that
makes a difference in cpu usage.... and also ensuring that you have enabled Windows Updates and that your computer has the latest updates from MS, Adobe etc.
MS has no control over what addons a user has or installs on their machines.
Post consumer questions about IE or windows to
http://answers.microsoft.com (Help>Online Support menu). Include with your questions the full links to any websites that you are having issues with....
Always... the first step in troubleshooting web browser issues is to test in no addons mode.
Rob^_^

Firefox giving me the huge prob specially plug-in container use the 100% CPU and disconnected my internet, many time in a hour. meanwhile IE works fine no disconnection no high CPU usage. I m using 2 plug-ins grease monkey and fire bug

when i m use the FF after 20-30 minutes every site who i want to open after giving the URL in address bar and hit enter
FF status bar msg
Connecting...........
after 1 or 2 minutes plug-in container make the system heavy
on task manager > process
plug-in container 100
and task manager status bar showing 100% CPU usage.
after closing FF other browsers IE, opera work fine and smoothly

when i m use the FF after 20-30 minutes every site who i want to open after giving the URL in address bar and hit enter
FF status bar msg
Connecting...........
after 1 or 2 minutes plug-in container make the system heavy
on task manager > process
plug-in container 100
and task manager status bar showing 100% CPU usage.
after closing FF other browsers IE, opera work fine and smoothly

Applet CPU usage 100%

Hi,
I am running my applet on IE 5.5 not using any plugin, on a NT heavy
duty machine. The applet takes up 100% CPU. The applet does not have
any GUI component but launches JSP pages. The applet connects to
backend resources using socket, uses threads etc. The bulk of the code
is in Java classes- the classes themselves run fine outside of the
applet.
Any ideas or suggestions welcome. How can we measure cPU usage in
Java?
Thanks a lot,
Sanjay

I too have this problem

DNS server process, high CPU usage

Hello,
I am having a problem with high CPU usage on DNS process. We have 1921 setup in network of about 100 workstations that use it as DNS server. It also performs split view functionality for couple of domains in order to avoid hairpin NAT. I know that a router is not fit for heavy server duty but such setup was unfortunately necessary.
In peak work hours we oftenly have CPU hitting 100% with DNS server process being the root cause,and on several occasions we had DNS process stuck in such state for prolonged periods of time during which other router functions were affected (t's a default gateway, IPsec concentrator etc.). Sometimes shutting the process and restarting it would solve the problem, but once it required a full reload in order to restore functionality (such was the description that engineer on duty reported to me).
Forwarder queue statistics:
Current size = 0
Maximum size = 86
Drops        = 0
IOS upgrade did not help, we are currently running 15.2(2)T.
The question is ... is such behaviour (CPU load) to be expected on LAN with 100 workstations due to slow CPU on router or we have bugged IOS DNS server (requiring a TAC case)?
The previous solution seem to do this functionality quite nicely (even though it was also a router), so I am not inclined to think that we are dealing with someone DoS-ing the DNS (WAN access to DNS is of course forbidden)
P.S.
Since we moved servers off the routers DNS, we do not receive complaints, but we had a couple of unresolved messages a day while mail server was using router for DNS. I am suspecting that an old bug where IOS DNS servers occasionaly sends clients back empty DNS replies (properly formatted message but without A record) could be still around?

hi,
i have the same problem on UC540 and 2911 on IOS 15.0.1. CPU high, router crashed. Reboot helps but until CPU usage spikes again. the only fix is to remove "ip dns server" from config and use a different DNS server
                    111                       1111    1111111111
          999999999900077777777799999777778888000099990000000000
    322222111119999900077776666622222111119999000088880000000000
100            ********                       ******************
90       *************         *****     **********************
80       ***************************     **********************
70       ******************************************************
60       ******************************************************
50       ******************************************************
40       ******************************************************
30       ******************************************************
20       ******************************************************
10       ******************************************************
   0....5....1....1....2....2....3....3....4....4....5....5....6
             0    5    0    5    0    5    0    5    0    5    0
               CPU% per second (last 60 seconds)
after removed IP dns server
                                       111
                             99999999990007777777779999977777888
              33333333332222211111999990007777666662222211111999
100                               ********
90                          *************         *****     ***
80                          ***************************     ***
70                          ***********************************
60                          ***********************************
50                          ***********************************
40                          ***********************************
30                          ***********************************
20                          ***********************************
10                          ***********************************
   0....5....1....1....2....2....3....3....4....4....5....5....6
             0    5    0    5    0    5    0    5    0    5    0
               CPU% per second (last 60 seconds)

High cpu usage (99.9%) on 4510

My CAT 4510 switch is showing 99.9% CPU usage almost through out the day. After some analysis i saw that the “Cat4k Mgmt LoPri” process is having 86% CPU utilization. This process is a package that is including multiple process.
2.       Within this package, two processes have been identified which are causing this shock which are “K5L3Unicast Adj Tabl” and “K5 L2 Hardware Addre” .
3.       This indicates that some heavy activity is going on CEF adjacency table and RP MAC Address Table. My current IOS version is 12.2(53)SG
     Can anyone tell me what is happening and what is the solution?
Thanks

this should help
http://www.cisco.com/en/US/products/hw/switches/ps663/products_tech_note09186a00804cef15.shtml

Distnoted, heavy cpu usage

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