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由于 Nwk_lg 域较高, CPU 利用率较高

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适用场景

ONTAP 9 

问题描述

  • CPU 利用率高

示例:

cluster::*> run -node node1 sysstat 1                                   
 CPU     NFS    CIFS    HTTP     Net   kB/s    Disk   kB/s    Tape   kB/s  Cache
                                  in    out    read  write    read  write    age
53%    5324   48229       0   38327   6833  127216 390644       0      0     6s
64%    6208   38916       0   64143  10034  419764 1445352       0      0     6s
50%   26610   51969       0   73790   8921  119760 382280       0      0     6s
53%   29072   57445       0  125694  10797  106164 408976       0      0     6s
89%   15387   45833       0  120733   8356  176208 521896       0      0    10s
99%   15003   48234       0  131641   7639  190944 511900       0      0     2
 99%   12012   64723       0  105238  16576  373572 512840       0      0     0s
99%   15154   35868       0  148367  13014  255076 405512       0      0     2
 99%   12834   34674       0  115071   6865  215028 550032       0      0     2
 99%   12465   32334       0  133452  17632  414064 679288       0      0     2
 99%   13036   37854       0  126981   8369  204972 402760       0      0     3
 CPU     NFS    CIFS    HTTP     Net   kB/s    Disk   kB/s    Tape   kB/s  Cache
                                  in    out    read  write    read  write    age
99%   13897   33801       0  141796   3869  104280 335868       0      0     2
 99%   12403   30245       0   87923   9940  319380 821176       0      0     2s
99%   10065   29574       0  172745   8461  158264 417404       0      0     2s
99%   11967   33489       0  154454   9136  206668 564908       0      0     3
 99%   11428   34399       0   81521   3313  136904 391944       0      0     2

  • Nwk_lg 域较高时的 CPU 利用率较高。

cluster::> node run -node <node_name>
node> priv set diag
node*> sysstat -M

 

示例:

sysstat-M.jpg

  • fragments received输出 "netstat -s"中的大量。

示例:

> ip:
>             645136792449 total packets received                    
>             154113333490 fragments received                          <<< Here>>>
>             7271533072 packets reassembled ok                     
>             464498769419 packets sent from this host          
>             801059272 output datagrams fragmented                          
>             13545054029 fragments created                                             
> icmp:
>             Output histogram:
>                             echo reply: 19561080
>                             destination unreachable: 273761                              
>             Input histogram:
>                             echo reply: 5331332
>                             destination unreachable: 708
>                             echo: 19561716
>                             time exceeded: 8556                

  • 基于 UDP 的 NFS 。

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