Dell Unity: uDoctor-planlagte opgaver udløser høj CPU-udnyttelse

Summary: Et specifikt SDC-plugin (Service Data Collection), der bruges af APEX AIOps, kan med mellemrum udløse flere PostgreSQL-forespørgsler (PSQL) under uDoctor-planlagte opgaver, hvilket resulterer i høj CPU-udnyttelse på den primære storageprocessor i ca. 15 minutter. Dette problem påvirker ikke manuelt genererede tjenestedataindsamlinger og løses i Unity OE version 5.0.3. ...

This article applies to This article does not apply to This article is not tied to any specific product. Not all product versions are identified in this article.
Check out other resources

Symptoms

CPU-udnyttelsen på den primære storageprocessor når op på 90-100 % på samme tidspunkt hver dag og forbliver høj i ca. 15 minutter.

Cause

APEX AIOps-teamet har identificeret et problem, hvor et specifikt SDC-plugin (Service Data Collection) periodisk kan udløse flere PostgreSQL-kommandoer (PSQL).


Når dette sker, kan de resulterende PSQL-forespørgsler forårsage betydelig CPU-udnyttelse på den primære lagerprocessor (SP), som er ansvarlig for at køre uDoctor-opgaver.

 

Bemærk: Dette problem opstår ikke, når en tjenestedataindsamling genereres manuelt. Problemet påvirker kun uDoctor-planlagte opgaver, herunder de daglige logsamlinger, der genereres for APEX AIOps.

Resolution

Dette problem er løst i Unity OE version 5.0.3, som indeholder en koderettelse for at forhindre overdreven CPU-udnyttelse forårsaget af de berørte uDoctor-planlagte opgaver.


Du kan finde yderligere oplysninger om Dell Unity OE-versioner og udgivelsesplaner i Knowledge Base-artiklen om Dell Unity OE Matrix .

Additional Information

For at bekræfte, at dette problem forekommer, skal du køre følgende kommandoer i Unisphere CLI fra en SSH-terminal:


/spX/EMC/backend/log_shared/EMCSystemLogFile.log 

service@spb:~# tailf 00_emc_backend_log_shared/EMCSystemLogFile.log | grep -i udoctor
" 2020-02-16 T 13:03:12 .155Z" "Array_spb@Serial_Number" "Kittyhawk_safe" "9134" "unix/spb/root" "INFO" "1:115000d" :: " Internal Information only. PSM File "udoctor" Deleted. " :: Category=System Component=psm TimeZone=UTC

"2020-02-17 T 13:03:12 .944Z" "Array_spb@Serial_Number" "Kittyhawk_safe" "9134" "unix/spb/root" "INFO" "1:115000d" :: " Internal Information only. PSM File "udoctor" Deleted. " :: Category=System Component=psm TimeZone=UTC

UEMCLI metrics (historisk):

service@spb:~# uemcli -no /metrics/value/hist -path sp.*.cpu.summary.utilization show -interval 60 -from "2020-02-16 12:59:00" -to "2020-02-16 13:59:00"
Timestamp           |SP        |summary
                    |          |CPU
                    |          |Util %
--------------------+----------+-------
2020-02-16 13:02:00 |spa       |  13.93
                    |spb       |  66.47
2020-02-16 13:03:00 |spa       |  12.49
                    |spb       |  90.96
2020-02-16 13:04:00 |spa       |  12.94
                    |spb       |  92.63
2020-02-16 13:05:00 |spa       |  11.91
                    |spb       |  93.29
2020-02-16 13:06:00 |spa       |  5.072
                    |spb       |  92.28
2020-02-16 13:07:00 |spa       |  2.497
                    |spb       |  90.06
2020-02-16 13:08:00 |spa       |  2.452
                    |spb       |  92.38
2020-02-16 13:09:00 |spa       |  2.527
                    |spb       |  95.68
2020-02-16 13:10:00 |spa       |  2.441
                    |spb       |  98.36
2020-02-16 13:11:00 |spa       |  2.845
                    |spb       |  97.170
2020-02-16 13:12:00 |spa       |  2.466
                    |spb       |  97.096
2020-02-16 13:13:00 |spa       |  2.479
                    |spb       |  97.732
2020-02-16 13:14:00 |spa       |  2.469
                    |spb       |  98.023
2020-02-16 13:15:00 |spa       |  2.362
                    |spb       |  96.391
2020-02-16 13:16:00 |spa       |  2.697
                    |spb       |  65.053
 
UEMCLI-målinger (realtid): 
service@spb:~# uemcli -no /metrics/value/rt -path sp.*.cpu.summary.utilization show -interval 10
Timestamp           |SP        |summary
                    |          |CPU
                    |          |Util %
--------------------+----------+-------
2020-02-17 13:03:20 |spa       |  0.929
                    |spb       |  90.810
2020-02-17 13:03:30 |spa       |  1.928
                    |spb       |  90.980
2020-02-17 13:03:40 |spa       |  2.417
                    |spb       |  90.537
2020-02-17 13:03:50 |spa       |  1.912
                    |spb       |  91.601
2020-02-17 13:04:00 |spa       |  2.124
                    |spb       |  93.625
2020-02-17 13:04:10 |spa       |  3.828
                    |spb       |  92.191

Affected Products

Dell Unity 300, Dell EMC Unity 300F, Dell EMC Unity 350F, Dell EMC Unity 400, Dell EMC Unity 400F, Dell EMC Unity 450F, Dell EMC Unity 500, Dell EMC Unity 500F, Dell EMC Unity 550F, Dell EMC Unity 600, Dell EMC Unity Family

Products

Dell EMC Unity 600F, Dell EMC Unity 650F, Dell EMC Unity Family |Dell EMC Unity All Flash, Dell EMC Unity Family, Dell EMC Unity Hybrid
Article Properties
Article Number: 000058581
Article Type: Solution
Last Modified: 17 تموز 2026
Version:  7
Find answers to your questions from other Dell users
Support Services
Check if your device is covered by Support Services.