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High HostOS Utilization due to process ndo_manager

Views:
546
Visibility:
Public
Votes:
1
Category:
ontap-9
Specialty:
perf
Last Updated:

Applies to

  • ONTAP 9
  • HostOS utilization

Issue

  • High CPU on node due to HostOS domain, Running sysstat -M command shows high host domain utilization
 
Sample output focusing on host Domain. 

 AVG CPU0 CPU1 CPU2 CPU3 CPU4 CPU5 CPU6 CPU7  Nwk_Lg Nwk_Exmpt Storage Raid  WAFL_Ex(Kahu)  Exempt SSAN_Ex Intr Host Ops/s 
 65%  47%  43%  45%  75%  67%  75%  67%  71%     15%       10%     15%   4%    211%( 14%)    180%    161%   5% 335%   8911   
 84%  73%  74%  76%  87%  86%  88%  84%  89%     14%        9%     17%   5%    229%( 15%)    124%    167%  10% 366%   9892   
 89%  80%  84%  83%  93%  90%  91%  91%  91%     17%       11%     12%   6%    190%( 12%)    200%    145%   8% 428%   9796   
 74%  61%  59%  60%  82%  76%  79%  80%  78%     20%       13%     14%   5%    212%( 14%)    208%    148%   7% 456%   8805   
 76%  67%  60%  59%  82%  80%  81%  78%  79%     17%       12%     15%   6%    231%( 15%)    174%    157%   6% 388%   9663   

 

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