High interrupt on Dell PowerEdge 2400

[Eli K. Breen]

FYI - disabling ACPI mitigates the problem, however it is undesirable. 
I've seen this same behaviour since 5.2-RELEASE, I'm honestly quite 
surprised it hasn't been fixed.

-E-

Guy Helmer wrote:
> 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
>