top: how to obtain which process take CPU time

Коньков Евгений kes-kes at yandex.ru
Sat Oct 1 19:43:05 UTC 2011


Здравствуйте, Frank.

Вы писали 1 октября 2011 г., 21:38:56:

FS> On Sat, Oct 01, 2011 at 08:38:49PM +0300, ??????? ??????? wrote:
>>
>> hi, Freebsd-questions.
>> 
>> last pid: 92665;  load averages:  2.40,  2.68,  4.75    up 5+02:45:23  20:29:07
>> 218 processes: 3 running, 215 sleeping
>> CPU: 59.6% user,  0.0% nice, 40.4% system,  0.0% interrupt,  0.0% idle
>> Mem: 225M Active, 81M Inact, 115M Wired, 3936K Cache, 60M Buf, 64M Free
>> Swap: 2048M Total, 190M Used, 1857M Free, 9% Inuse
>> 
>>   PID USERNAME    THR PRI NICE   SIZE    RES STATE    TIME   WCPU COMMAND
>> 92520 cacti         1  -8    0 22796K 12656K piperd   0:00  1.46% php
>> 92593 cacti         1  -8    0  4620K  2316K piperd   0:00  1.46% perl5.8.8
>> 92594 cacti         1   8    0  3460K  1120K wait     0:00  1.46% sh
>> 92592 cacti         1   8    0  3460K  1120K wait     0:00  1.46% sh
>> 92595 cacti         1  55    0  5448K  2692K select   0:00  1.37% snmpget
>> 92518 cacti         1   8    0 23820K 12896K nanslp   0:00  0.98% php
>> 92528 cacti         1  -8    0 22796K 12640K piperd   0:00  0.98% php
>> 92555 cacti         1  -8    0  4620K  2332K piperd   0:00  0.98% perl5.8.8
>> 92556 root          1  96    0  3280K  1292K select   0:00  0.98% sudo
>> 92554 cacti         1   8    0  3460K  1120K wait     0:00  0.98% sh
>> 92542 cacti         1   8    0  3460K  1128K wait     0:00  0.98% sh
>> 92543 cacti         1  -8    0 10200K  3664K piperd   0:00  0.78% rrdtool
>> 81166 firebird      1  45    0 23344K  6188K select   0:08  0.49% fb_inet_serve

FS> That looks to me like quite a weak system and has got 3 running
FS> processes and 215 sleeping. I can easily see that 59.6% of your CPU is
FS> being used and your load averages being as they are.
I see that too, but which process take that CPU?

>> 
>> top -SIHP
>> last pid: 99336;  load averages:  1.47,  2.05,  3.66    up 5+02:52:06  20:35:50
>> 291 processes: 6 running, 266 sleeping, 18 waiting, 1 lock
>> CPU: 52.2% user,  0.0% nice, 27.9% system,  0.0% interrupt, 19.9% idle
>> Mem: 236M Active, 81M Inact, 115M Wired, 3436K Cache, 60M Buf, 54M Free
>> Swap: 2048M Total, 189M Used, 1858M Free, 9% Inuse
>> 
>>   PID USERNAME   PRI NICE   SIZE    RES STATE    TIME   WCPU COMMAND
>>    11 root       171 ki31     0K     8K RUN     70.1H 27.59% idle: cpu0
>> 98502 cacti        8    0 23820K 12932K nanslp   0:00  0.20% php
>> 44054 root         8    0  3124K   524K nanslp   0:56  0.10% monitord
>> 99051 root        44    0  3496K  2020K RUN      0:00  0.10% top
>> 99331 cacti       -8    0  4620K  2332K piperd   0:00  0.00% perl5.8.8
>> 99326 cacti       -8    0  4620K  2332K piperd   0:00  0.00% perl5.8.8
>> 99333 root        46    0  3240K  1008K select   0:00  0.00% ping
>> 99328 root        45    0  3240K   972K select   0:00  0.00% ping
>> 99332 root        47    0  3280K  1292K select   0:00  0.00% sudo
>> 99327 root        47    0  3280K  1292K select   0:00  0.00% sudo
>> 
>> It is unclear which process take CPU time.
>> is there any other tool, which help me to see processes that take CPU?
>> 

FS> I don't think another tool would help. You've just got a weak system
FS> running lots of processes. None very big but they all add up to quite
FS> a big chunk of CPU. It looks like it's handling it OK though.
No. it is not weak. it is about 40% load averages, but somethig is
happen and take of 100% CPU (see SNMP graph).
 And I got a problem in FreeBSD I can not obtain which process take
 all CPU ((

> Robert Bonomi <bonomi at mail.r-bonomi.com>
> It is unclear which process take CPU time. is there any other tool, which
> help me to see processes that take CPU?
>>One -obvious- anwser is the 'ps' commnd.
>>Something like 'ps gxua".
You mean that 'ps gxua' shows wrong results?



FS> Regards,


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