Oracle Linux: Process 'migration' have Unusual Amount of CPU Usage (Doc ID 2671663.1)

Last updated on AUGUST 26, 2021

Applies to:

Symptoms

The system had multiple migration processes that have high CPU usage: 

[root@hostname  ~]# pidstat -u | grep -i migration

02:57:51 AM 6 0.00 93.09 0.00 93.09 0 migration/0
02:57:51 AM 8 0.00 99.82 0.00 99.82 1 migration/1
02:57:51 AM 13 0.00 99.13 0.00 99.13 2 migration/2
02:57:51 AM 17 0.00 99.89 0.00 99.89 3 migration/3
02:57:51 AM 21 0.00 99.35 0.00 99.35 4 migration/4
02:57:51 AM 25 0.00 97.03 0.00 97.03 5 migration/5
02:57:51 AM 29 0.00 69.53 0.00 69.53 6 migration/6
02:57:51 AM 33 0.00 99.70 0.00 99.70 7 migration/7
02:57:51 AM 37 0.00 99.71 0.00 99.71 8 migration/8
02:57:51 AM 41 0.00 99.86 0.00 99.86 9 migration/9
02:57:51 AM 45 0.00 98.70 0.00 98.70 10 migration/10
02:57:51 AM 49 0.00 97.87 0.00 97.87 11 migration/11
02:57:51 AM 53 0.00 84.37 0.00 84.37 12 migration/12
02:57:51 AM 57 0.00 97.95 0.00 97.95 13 migration/13
02:57:51 AM 61 0.00 98.56 0.00 98.56 14 migration/14
02:57:51 AM 65 0.00 98.26 0.00 98.26 15 migration/15
02:57:51 AM 69 0.00 97.26 0.00 97.26 16 migration/16
02:57:51 AM 73 0.00 87.06 0.00 87.06 17 migration/17
02:57:51 AM 77 0.00 93.99 0.00 93.99 18 migration/18
02:57:51 AM 81 0.00 99.87 0.00 99.87 19 migration/19
02:57:51 AM 85 0.00 96.57 0.00 96.57 20 migration/20
02:57:51 AM 89 0.00 96.75 0.00 96.75 21 migration/21
02:57:51 AM 93 0.00 92.47 0.00 92.47 22 migration/22
02:57:51 AM 97 0.00 95.49 0.00 95.49 23 migration/23
[root@hostname ~]#

System info:

Oracle Linux Server release 6.4
2.6.39-400.17.1.el6uek.x86_64 #1 SMP Fri Feb 22 18:16:18 PST 2013

Cause

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