top incorrectly reporting process time
Ott Köstner
OttK at zzz.ee
Thu Nov 27 22:54:57 PST 2008
Kris Kennaway wrote:
> Ott Köstner wrote:
>> Jeremy Chadwick wrote:
>>> On Sun, Nov 16, 2008 at 04:34:01PM +0200, Ott Köstner wrote:
>>>
>>>> On several FreeBSD machines I have the following problem:
>>>>
>>>
>>> What FreeBSD version? (It matters)
>>>
>> 7.1-PRERELEASE FreeBSD
>>
>> But I can experience it also on a 7.0 machine. Seems that top reports
>> incorrectly processes with multiple threads.
>>
>> $ top -bUbind
>> last pid: 21635; load averages: 0.73, 0.46, 0.29 up 1+00:17:18
>> 16:48:10
>> 54 processes: 1 running, 53 sleeping
>>
>> Mem: 66M Active, 1174M Inact, 204M Wired, 36K Cache, 112M Buf, 555M Free
>> Swap: 2048M Total, 2048M Free
>>
>> PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU COMMAND
>> 979 bind 8 44 0 40288K 32916K select 0 0:16 0.00% named
>>
>> $ ps -ax|grep 979
>> 979 ?? Ss 1:11.26 /usr/sbin/named -n 5 -t /var/named -u bind
>
> Check top -H to display the statistics for individual threads.
>
> Kris
# top -bUmysql
last pid: 8336; load averages: 0.33, 0.30, 0.24 up 13+22:36:29
08:47:07
157 processes: 1 running, 156 sleeping
Mem: 1163M Active, 2058M Inact, 555M Wired, 160M Cache, 214M Buf, 22M Free
Swap: 4096M Total, 432K Used, 4095M Free
PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU
COMMAND
1079 mysql 9 20 0 92316K 70472K sigwai 1 0:04 0.00% mysqld
1015 mysql 1 8 0 7056K 1332K wait 1 0:00 0.00% sh
-------------------------------------------------------------------------------------------------------------
# top -bHUmysql
last pid: 8497; load averages: 0.36, 0.32, 0.25 up 13+22:37:43
08:48:21
148 processes: 4 running, 144 sleeping
Mem: 1147M Active, 2068M Inact, 554M Wired, 156M Cache, 214M Buf, 32M Free
Swap: 4096M Total, 432K Used, 4095M Free
PID USERNAME PRI NICE SIZE RES STATE C TIME WCPU COMMAND
1079 mysql 44 0 92316K 70472K select 0 4:10 0.00% mysqld
1079 mysql 44 0 92316K 70472K select 0 3:12 0.00% mysqld
1079 mysql 44 0 92316K 70472K select 1 1:59 0.00% mysqld
1079 mysql 44 0 92316K 70472K ucond 0 0:47 0.00% mysqld
1079 mysql 44 0 92316K 70472K select 0 0:26 0.00% mysqld
1079 mysql 20 0 92316K 70472K sigwai 1 0:04 0.00% mysqld
1079 mysql 44 0 92316K 70472K ucond 0 0:04 0.00% mysqld
1079 mysql 44 0 92316K 70472K ucond 1 0:01 0.00% mysqld
1015 mysql 8 0 7056K 1332K wait 1 0:00 0.00% sh
1079 mysql 44 0 92316K 70472K ucond 0 0:00 0.00% mysqld
--------------------------------------------------------------------------------------------------------------
# ps -ax|grep 1079
1079 con- S 576:13.90 [mysqld]
--------------------------------------------------------------------------------------------------------------
# ps -aHx|grep 1079
1079 con- S 1:58.71 [mysqld]
1079 con- I 0:00.00 [mysqld]
1079 con- S 0:01.30 [mysqld]
1079 con- I 0:46.72 [mysqld]
1079 con- S 0:03.51 [mysqld]
1079 con- S 0:26.05 [mysqld]
1079 con- S 3:11.80 [mysqld]
1079 con- S 4:09.88 [mysqld]
1079 con- S 0:03.67 [mysqld]
Strange?
Greetings,
O.K.
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