High interrupt on Dell PowerEdge 2400

Guy Helmer ghelmer at palisadesys.com
Tue Jan 24 14:45:50 PST 2006


Eli K. Breen wrote:
> Does anyone have any explanation and resolution for the excessive 
> interrupt%?:
>
> (System dmesg at the end of this message)
> =======================================================
> last pid:  2756;  load averages:  0.00,  0.00,  0.00 
>                                                up 0+15:22:49  14:02:47
> 20 processes:  1 running, 19 sleeping
> CPU states:  0.4% user,  0.0% nice,  0.0% system, 16.1% interrupt, 
> 83.5% idle
> Mem: 6540K Active, 118M Inact, 97M Wired, 12K Cache, 112M Buf, 1028M Free
> Swap: 2048M Total, 2048M Free
>
>   PID USERNAME  THR PRI NICE   SIZE    RES STATE    TIME   WCPU COMMAND
>  2235 elib        1  96    0  2368K  1644K RUN      0:19  0.00% top
>  2233 elib        1  96    0  6076K  3144K select   0:02  0.00% sshd
>   477 root        1  96    0  3416K  2816K select   0:02  0.00% sendmail
>   497 root        1   8    0  1312K  1032K nanslp   0:00  0.00% cron
>   348 root        1  96    0  1292K   872K select   0:00  0.00% syslogd
>   421 root        1  96    0  1208K   772K select   0:00  0.00% usbd
>  2229 root        1   4    0  6108K  3136K sbwait   0:00  0.00% sshd
>   481 smmsp       1  20    0  3296K  2688K pause    0:00  0.00% sendmail
>  2234 elib        1   8    0  1676K  1256K wait     0:00  0.00% sh
>   560 root        1   5    0  1264K   928K ttyin    0:00  0.00% getty
>   472 root        1  96    0  3352K  2484K select   0:00  0.00% sshd
>   567 root        1   5    0  1264K   928K ttyin    0:00  0.00% getty
>   562 root        1   5    0  1264K   928K ttyin    0:00  0.00% getty
>   561 root        1   5    0  1264K   928K ttyin    0:00  0.00% getty
>   563 root        1   5    0  1264K   928K ttyin    0:00  0.00% getty
>   564 root        1   5    0  1264K   928K ttyin    0:00  0.00% getty
>   565 root        1   5    0  1264K   928K ttyin    0:00  0.00% getty
>   566 root        1   5    0  1264K   928K ttyin    0:00  0.00% getty
>   319 root        1 113    0   500K   352K select   0:00  0.00% devd
>   171 root        1  20    0  1172K   644K pause    0:00  0.00% adjkerntz
> =======================================================
>
> This machine is a totally stock FreeBSD 6.0 box. I haven't done 
> anything except install the OS and boot it.
>
> Ideas?
What does "vmstat -i" report?

Guy

-- 
Guy Helmer, Ph.D.
Principal System Architect
Palisade Systems, Inc.



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