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List:       postgresql-general
Subject:    Re: Centos : Load Average :OS Process Name : migration/1, migration/2 , migration/n
From:       Perumal Raj <perucinci () gmail ! com>
Date:       2019-05-26 20:28:36
Message-ID: CALvqh4p6tvhVyRe6W+vukY6LXPWG5Oid08xvTBCZ9M18uEM29g () mail ! gmail ! com
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Thanks for the update Ron,

Hopefully i will get some lead further on this issue, Will keep u posted.

On Wed, May 22, 2019 at 6:07 PM Ron <ronljohnsonjr@gmail.com> wrote:

> On 5/22/19 4:18 PM, Perumal Raj wrote:
>
> Hi All,
>
> We have recently migrated postgres DB to out of of server ( Centos 6.9 ) .
> Both Source and Target versions of OS/DB are same . Also Configuration is
> Apple-Apple.
>
> But We started seeing lot of process name 'migration' at OS Level in new
> server which is triggering Load average most of the time  .
>
> Some sample process from top command,
>
>     67 root      RT   0     0    0    0 R 34.8  0.0 913:06.38
> [migration/16]
>
>    155 root      RT   0     0    0    0 S 32.2  0.0 845:46.53
> [migration/38]
>
>     35 root      RT   0     0    0    0 S 27.6  0.0 927:15.27
> [migration/8]
>
>     11 root      RT   0     0    0    0 S 21.4  0.0   1033:45
> [migration/2]
>
>    131 root      RT   0     0    0    0 S 21.4  0.0 812:00.70
> [migration/32]
>
>     87 root      RT   0     0    0    0 S 20.7  0.0 394:28.32
> [migration/21]
>
> Anyone come-across this situation ? Please share your thoughts .
>
>
> I googled "linux *root* migration" and found this:
>
> https://serverfault.com/questions/674685/kernel-processes-periodically-eating-cpu-during-high-load
>
> It has some pretty good answers.
>
> --
> Angular momentum makes the world go 'round.
>

[Attachment #3 (text/html)]

<div dir="ltr">Thanks for the update Ron,<div><br></div><div>Hopefully i will get \
some lead further on this issue, Will keep u posted.</div></div><br><div \
class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, May 22, 2019 at 6:07 PM \
Ron &lt;<a href="mailto:ronljohnsonjr@gmail.com">ronljohnsonjr@gmail.com</a>&gt; \
wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px \
0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">  
    
  
  <div bgcolor="#FFFFFF">
    On 5/22/19 4:18 PM, Perumal Raj wrote:<br>
    <blockquote type="cite">
      
      <div dir="ltr">Hi All,<br>
        <br>
        We have recently migrated postgres DB to out of of server (
        Centos 6.9 ) .<br>
        Both Source and Target versions of OS/DB are same . Also
        Configuration is Apple-Apple.<br>
        <br>
        But We started seeing lot of process name &#39;migration&#39; at OS
        Level in new server which is triggering Load average most of the
        time   .<br>
        <br>
        Some sample process from top command,
        <div><br>
          <font size="1">      67 root         RT    0       0      0      0 R 34.8
              0.0 913:06.38 [migration/16]                                            \
                
                                                                          <br>
                 155 root         RT    0       0      0      0 S 32.2   0.0
            845:46.53 [migration/38]                                                  \
  <br>
                  35 root         RT    0       0      0      0 S 27.6   0.0
            927:15.27 [migration/8]                                                   \
  <br>
                  11 root         RT    0       0      0      0 S 21.4   0.0   
            1033:45 [migration/2]                                                     \
  <br>
                 131 root         RT    0       0      0      0 S 21.4   0.0
            812:00.70 [migration/32]                                                  \
  <br>
                  87 root         RT    0       0      0      0 S 20.7   0.0
            394:28.32 [migration/21]   </font></div>
        <div><font size="1"><br>
          </font></div>
        <div><font size="1">Anyone come-across this situation ? Please
            share your thoughts .</font></div>
      </div>
    </blockquote>
    <br>
    I googled &quot;linux <b>root</b> migration&quot; and found this:<br>
    <a href="https://serverfault.com/questions/674685/kernel-processes-periodically-eating-cpu-during-high-load" \
target="_blank">https://serverfault.com/questions/674685/kernel-processes-periodically-eating-cpu-during-high-load</a><br>
  <br>
    It has some pretty good answers.<br>
    <br>
    <div class="gmail-m_3257377167180321915moz-signature">-- <br>
      Angular momentum makes the world go &#39;round.</div>
  </div>

</blockquote></div>



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