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acpi_pad プロセスが CPU を大量に消費する

Solution Verified - Updated -

Issue

サーバーの CPU 負荷が高く、多くの acpi_pad プロセスが CPU を大量に消費しています。

Tasks: 1031 total,  66 running, 965 sleeping,   0 stopped,   0 zombie
%Cpu(s): 14.8 us, 52.8 sy,  0.0 ni, 31.9 id,  0.2 wa,  0.0 hi,  0.3 si,  0.0 st
KiB Mem : 10562912+total, 66124185+free, 37628070+used, 18768652 buff/cache
KiB Swap:  4194300 total,  4194300 free,        0 used. 67010099+avail Mem

    PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND
 963890 qemu      20   0   40.9g  40.1g  12120 S 301.9  4.0 156654:49 qemu-kvm
 278503 qemu      20   0   41.0g  11.9g  12092 S 293.2  1.2 268:42.38 qemu-kvm
 876242 qemu      20   0   41.2g  40.1g  12120 S 227.3  4.0 138545:04 qemu-kvm
 782025 qemu      20   0   41.1g  38.5g  12120 S 200.6  3.8  52635:23 qemu-kvm
 329268 qemu      20   0   41.1g  40.1g  12128 S 125.8  4.0 196541:49 qemu-kvm
 728861 root      -2   0       0      0      0 R  96.9  0.0   1035:42 acpi_pad/31
 728860 root      -2   0       0      0      0 R  95.7  0.0   1035:43 acpi_pad/30
 728669 root      -2   0       0      0      0 R  95.3  0.0   1035:56 acpi_pad/0
 728672 root      -2   0       0      0      0 R  95.3  0.0   1035:55 acpi_pad/2
 728675 root      -2   0       0      0      0 R  95.3  0.0   1035:56 acpi_pad/5
 728687 root      -2   0       0      0      0 R  95.3  0.0   1035:54 acpi_pad/6
 728692 root      -2   0       0      0      0 R  95.3  0.0   1035:51 acpi_pad/9
 728702 root      -2   0       0      0      0 R  95.3  0.0   1035:52 acpi_pad/13
 728711 root      -2   0       0      0      0 R  95.3  0.0   1035:51 acpi_pad/14
 728713 root      -2   0       0      0      0 R  95.3  0.0   1035:51 acpi_pad/15
 728747 root      -2   0       0      0      0 R  95.3  0.0   1035:50 acpi_pad/16
 728753 root      -2   0       0      0      0 R  95.3  0.0   1035:49 acpi_pad/19
 728801 root      -2   0       0      0      0 R  95.3  0.0   1035:47 acpi_pad/20
 728830 root      -2   0       0      0      0 R  95.3  0.0   1035:46 acpi_pad/24
 728831 root      -2   0       0      0      0 R  95.3  0.0   1035:44 acpi_pad/25
 728834 root      -2   0       0      0      0 R  95.3  0.0   1035:45 acpi_pad/26
 728835 root      -2   0       0      0      0 R  95.3  0.0   1035:44 acpi_pad/27
 728838 root      -2   0       0      0      0 R  95.3  0.0   1035:44 acpi_pad/28
 728839 root      -2   0       0      0      0 R  95.3  0.0   1035:43 acpi_pad/29
 728865 root      -2   0       0      0      0 R  95.3  0.0   1035:42 acpi_pad/33
 728871 root      -2   0       0      0      0 R  95.3  0.0   1035:40 acpi_pad/34
 728872 root      -2   0       0      0      0 R  95.3  0.0   1035:39 acpi_pad/35
 728874 root      -2   0       0      0      0 R  95.3  0.0   1035:41 acpi_pad/36
 728875 root      -2   0       0      0      0 R  95.3  0.0   1035:40 acpi_pad/37
 728879 root      -2   0       0      0      0 R  95.3  0.0   1035:42 acpi_pad/38
 728880 root      -2   0       0      0      0 R  95.3  0.0   1035:39 acpi_pad/39
 728887 root      -2   0       0      0      0 R  95.3  0.0   1035:37 acpi_pad/43
 728896 root      -2   0       0      0      0 R  95.3  0.0   1035:35 acpi_pad/47
 728673 root      -2   0       0      0      0 D  95.0  0.0   1035:55 acpi_pad/3
 728827 root      -2   0       0      0      0 D  95.0  0.0   1035:48 acpi_pad/22
 629726 qemu      20   0   11.2g   9.1g  12112 S  94.7  0.9  17780:40 qemu-kvm
 728864 root      -2   0       0      0      0 D  94.4  0.0   1035:41 acpi_pad/32
 728886 root      -2   0       0      0      0 D  94.4  0.0   1035:38 acpi_pad/42
 728802 root      -2   0       0      0      0 R  94.1  0.0   1035:49 acpi_pad/21
 728670 root      -2   0       0      0      0 R  93.8  0.0   1035:55 acpi_pad/1
 728674 root      -2   0       0      0      0 R  93.8  0.0   1035:57 acpi_pad/4
 728688 root      -2   0       0      0      0 R  93.8  0.0   1035:54 acpi_pad/7
 728691 root      -2   0       0      0      0 R  93.8  0.0   1035:54 acpi_pad/8
 728694 root      -2   0       0      0      0 R  93.8  0.0   1035:51 acpi_pad/10
 728695 root      -2   0       0      0      0 R  93.8  0.0   1035:52 acpi_pad/11
 728701 root      -2   0       0      0      0 R  93.8  0.0   1035:51 acpi_pad/12
 728752 root      -2   0       0      0      0 R  93.8  0.0   1035:49 acpi_pad/18
 728828 root      -2   0       0      0      0 R  93.8  0.0   1035:47 acpi_pad/23
 728883 root      -2   0       0      0      0 R  93.8  0.0   1035:40 acpi_pad/40
 728884 root      -2   0       0      0      0 R  93.8  0.0   1035:37 acpi_pad/41
 728889 root      -2   0       0      0      0 R  93.8  0.0   1035:35 acpi_pad/44
 728890 root      -2   0       0      0      0 R  93.8  0.0   1035:35 acpi_pad/45
 728895 root      -2   0       0      0      0 R  93.8  0.0   1035:36 acpi_pad/46
 728748 root      -2   0       0      0      0 R  93.5  0.0   1035:51 acpi_pad/17

Environment

  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat OpenStack Platform 12

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