Re: IRIX mode for top command in linux

Thanks Douglas. Is it a best practice to turn off irix mode when using top?

On Wed, 19 Jan 2022 at 10:20 AM, Douglas Dunyan <dmdunyan_at_gmail.com> wrote:

> so your statement " The below is occupying 99% of CPU yet overall we have
> 84.5% idle CPU." is accurate.
>
> This line: " %Cpu(s): 12.5 us, 2.8 sy, 0.0 ni, 84.5 id, 0.0 wa, 0.0
> hi, 0.1 si, 0.0 st" is an aggregate function.
>
> HTH
>
> D
>
> On Tue, Jan 18, 2022 at 9:46 PM Goti <aryan.goti_at_gmail.com> wrote:
>
>> Hi Douglas,
>>
>> Yes it does show.
>>
>> top - 01:45:04 up 14:38, 1 user, load average: 2.83, 2.93, 3.14
>> Tasks: 504 total, 3 running, 501 sleeping, 0 stopped, 0 zombie
>> %Cpu0 : 17.7 us, 17.4 sy, 0.0 ni, 64.9 id, 0.0 wa, 0.0 hi, 0.0 si,
>> 0.0 st
>> %Cpu1 : 45.0 us, 13.9 sy, 0.0 ni, 41.1 id, 0.0 wa, 0.0 hi, 0.0 si,
>> 0.0 st
>> %Cpu2 : 65.3 us, 11.0 sy, 0.0 ni, 23.7 id, 0.0 wa, 0.0 hi, 0.0 si,
>> 0.0 st
>> %Cpu3 : 20.8 us, 12.9 sy, 0.0 ni, 66.3 id, 0.0 wa, 0.0 hi, 0.0 si,
>> 0.0 st
>> %Cpu4 : 15.0 us, 20.7 sy, 0.0 ni, 64.3 id, 0.0 wa, 0.0 hi, 0.0 si,
>> 0.0 st
>> %Cpu5 : 69.9 us, 16.7 sy, 0.0 ni, 13.4 id, 0.0 wa, 0.0 hi, 0.0 si,
>> 0.0 st
>> %Cpu6 : 20.5 us, 10.7 sy, 0.0 ni, 68.8 id, 0.0 wa, 0.0 hi, 0.0 si,
>> 0.0 st
>> %Cpu7 : 13.0 us, 16.3 sy, 0.0 ni, 70.8 id, 0.0 wa, 0.0 hi, 0.0 si,
>> 0.0 st
>> KiB Mem : 65791984 total, 1877504 free, 59237028 used, 4677452
>> buff/cache
>> KiB Swap: 0 total, 0 free, 0 used. 5889832 avail Mem
>>
>> PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+
>> COMMAND
>> 112998 oracle 20 0 52.6g 235544 26672 R 98.7 0.4 68:57.98
>> oracle_112998_c
>> 38775 oracle 20 0 52.4g 59412 33968 R 98.0 0.1 44:07.96
>> ora_j000_cdp028
>>
>> Thanks,
>>
>> Goti
>>
>>
>> On Wed, Jan 19, 2022 at 10:09 AM Douglas Dunyan <dmdunyan_at_gmail.com>
>> wrote:
>>
>>> Hmmm....when running top, and you press the "1" key on your keyboard,
>>> does it show cpu0 --> cpu7 ?
>>>
>>> Just a guess....I can't imagine a system with a 52 Gb sga being only 1
>>> vCPU...
>>>
>>> D
>>>
>>> On Tue, Jan 18, 2022 at 8:56 PM Goti <aryan.goti_at_gmail.com> wrote:
>>>
>>>> Hi All,
>>>>
>>>> Can someone explain the meaning of IRIX mode for top command in Linux?
>>>> For databases running on VM's, when running top, should we turn off the
>>>> IRIX mode to get the exact CPU utilization? The below is occupying 99% of
>>>> CPU yet overall we have 84.5% idle CPU.
>>>>
>>>> top - 00:52:37 up 13:46, 1 user, load average: 2.00, 2.30, 2.43
>>>> Tasks: 507 total, 4 running, 503 sleeping, 0 stopped, 0 zombie
>>>> %Cpu(s): 12.5 us, 2.8 sy, 0.0 ni, 84.5 id, 0.0 wa, 0.0 hi, 0.1 si,
>>>> 0.0 st
>>>> KiB Mem : 65791984 total, 1684392 free, 59226316 used, 4881276
>>>> buff/cache
>>>> KiB Swap: 0 total, 0 free, 0 used. 5909356 avail
>>>> Mem
>>>>
>>>> PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+
>>>> COMMAND
>>>> 112998 oracle 20 0 52.6g 235508 26536 R 99.7 0.4 17:59.26
>>>> oracle_112998_c <<<< 99% CPU , however total seems to be less.
>>>> 3704 root 20 0 554212 24212 10176 S 1.7 0.0 17:49.27
>>>> BESClient
>>>> 4229 oracle 20 0 1384960 42856 22832 S 0.7 0.1 4:03.95
>>>> oraagent.bin
>>>>
>>>> Thanks,
>>>>
>>>> Goti
>>>>
>>> --
Thanks,

Goti

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