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poor upload performance on StorageGRID cause by acpi_pad

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Category:
storagegrid-webscale
Specialty:
sgrid
Last Updated:

Applies to

  • StorageGRID container
  • Bare metal host CentOS 8

Issue

  • Poor upload performance.
  • Running diagnostic tests found no issues.
  • Checking the CPU, memory, disk IO utilization in Grid Manager are normal.
  • Some storage nodes in the ping test have high latency, but network utilization is low, no error in ifconfig -a.
  • Check the host CPU utilization and find that the acpi_pad process accounts for a high amount of CPU.
[root@sn01 ~]# top -b -n 1
top - 12:07:37 up 35 days, 22:44,  2 users,  load average: 42.41, 42.63, 42.73
Tasks: 807 total,  29 running, 777 sleeping,   0 stopped,   1 zombie
%Cpu(s):  3.9 us, 53.9 sy,  0.0 ni, 40.4 id,  0.1 wa,  1.2 hi,  0.4 si,  0.0 st
MiB Mem :  63936.6 total,   4035.7 free,  36641.3 used,  23259.6 buff/cache
MiB Swap:  12208.0 total,  11868.5 free,    339.5 used.  19465.7 avail Mem
 
PID USER      PR  NI    VIRT    RES    SHR S  %CPU  %MEM     TIME+ COMMAND
1546 root      -2   0       0      0      0 R  95.2   0.0  50317:00 acpi_pad/5
1547 root      -2   0       0      0      0 R  95.2   0.0  50317:47 acpi_pad/6
1550 root      -2   0       0      0      0 R  95.2   0.0  50316:29 acpi_pad/7
1551 root      -2   0       0      0      0 R  95.2   0.0  50317:18 acpi_pad/8
1552 root      -2   0       0      0      0 R  95.2   0.0  50316:46 acpi_pad/9
1553 root      -2   0       0      0      0 R  95.2   0.0  50317:16 acpi_pad/10
1555 root      -2   0       0      0      0 R  95.2   0.0  50317:05 acpi_pad/12
1329 root      -2   0       0      0      0 R  90.5   0.0  50317:55 acpi_pad/0
1331 root      -2   0       0      0      0 R  90.5   0.0  50317:08 acpi_pad/1
1528 root      -2   0       0      0      0 R  90.5   0.0  50317:42 acpi_pad/2
1531 root      -2   0       0      0      0 R  90.5   0.0  50317:09 acpi_pad/3
1542 root      -2   0       0      0      0 R  90.5   0.0  50317:20 acpi_pad/4
1554 root      -2   0       0      0      0 R  90.5   0.0  50317:15 acpi_pad/11
1556 root      -2   0       0      0      0 R  90.5   0.0  50316:16 acpi_pad/13
1565 root      -2   0       0      0      0 R  90.5   0.0  50318:15 acpi_pad/14
1566 root      -2   0       0      0      0 R  90.5   0.0  50316:27 acpi_pad/15
10128 1015      20   0   29.0g  24.6g 972976 S  81.0  39.5  40949:56 java
17882 1002      20   0 7794768 859096  21092 S  47.6   1.3  23286:58 ldr
2675 root      20   0   66928   5696   4256 R  19.0   0.0   0:00.06 top
5091 1006      20   0 2960584 179700  14740 S   9.5   0.3   5660:40 ssm
8900 1001      20   0 3546620 652360  14564 S   9.5   1.0   5468:02 adc
10687 1005      20   0 3347360 507348  14216 S   9.5   0.8   5248:31 ams
12401 1008      20   0 2950068 171416  13940 S   9.5   0.3   5321:49 cmn
17256 1004      20   0 3004452 191084  14204 S   9.5   0.3   5299:42 nms
17707 1013      20   0 4213144 266092  16928 S   9.5   0.4   5746:44 dds
19432 1004      20   0 9531996 464616  18200 S   4.8   0.7 613:31.87 jsvc
20627 1021      20   0 3384852  44756   7636 S   4.8   0.1   3036:01 rsm
21711 1006      20   0 3014228 238824  14852 S   4.8   0.4   5597:06 ssm
27227 root      20   0  581372  51984   8940 S   4.8   0.1 375:22.70 dynip-daemon.py
1 root      20   0  245000   8780   5932 S   0.0   0.0   0:26.13 systemd

 

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