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High CPU Usage (Trace) (Kill) [migration] : website not available

Discussion in 'Workarounds and Optimization' started by Sam_Vargese, Mar 22, 2013.

  1. Sam_Vargese

    Sam_Vargese Member

    Mar 22, 2013
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    I have a problem with my dedicated server, CPU process is very high and the website is not available. here is the WHM process manager details:
    Pid 	Owner 	Priority 	CPU % 	Memory % 	Command
    23 (Trace) (Kill) 	root 	-  90.0 	0.0 	[migration]
    14 (Trace) (Kill) 	root 	-  66.3 	0.0 	[migration/3]
    20 (Trace) (Kill) 	root 	-  64.1 	0.0 	[migration/5]
    17 (Trace) (Kill) 	root 	-  55.6 	0.0 	[migration/4]
    11 (Trace) (Kill) 	root 	-  49.6 	0.0 	[migration/2]
    26 (Trace) (Kill) 	root 	-  48.9 	0.0 	[migration/7]
    7 (Trace) (Kill) 	root 	-  39.0 	0.0 	[migration/1]
    By killing all process I can access my website for few minutes. But it becomes unavailable again after few minutes . I am running a file uploading and video streaming script on my server. Here is server Config:

    Technology :Nehalem
    Processor :Intel Xeon W3520
    Intel Smart Cache: 8MB
    Cores: 4
    Threads: 8
    Frequency: 2.66GHz+
    Turbo Boost: 2.93GHz
    Virtualisation : Yes
    RAM : 24 GB DDR3
    Hard drive : 2x 2TB SATA2
    RAID : SOFT RAID - 0/1
    Connection :1 Gbps Lossless

    I contacted hosting company, they helped me with netbooting and rebooting the machine. But still Problem with high CPU usage

    I hope it can be solved from Cpanel forum

  2. arunsv84

    arunsv84 Well-Known Member

    Oct 20, 2008
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  3. cPanelJared

    cPanelJared Technical Analyst

    Feb 25, 2010
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    Migration processes are how the Linux kernel handles allocating threads across multiple CPU cores. There is going to be one for each CPU core. You should not kill them. If they are using a lot of CPU time, it is a symptom of a load problem, not the cause.

    By doing a Google search for "linux migration processes" I found these articles, which should help:

    linux - What is the 'migration" process? - Super User
    linux migration process cpu usage is so high, why? - Stack Overflow

    The migration processes are not the cause of the load problem. Run top to see what else is causing the load on your server.
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...

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