top incorrectly reporting process time

[Ott Köstner]

Kris Kennaway wrote:
> Ott Köstner wrote:
>
>> Here is the problem. top returns only 9:42 -- the time of the first 
>> thread. ps returns the sum of the thread times, which is correct.
>
> OK, I thought you were claiming the numbers were completely unrelated. 
> Yeah, top and ps are just reporting different things (runtime of one 
> thread vs total runtime of all threads).  top may have a configuration 
> option about aggregating the thread runtimes, or it may require a 
> source code change.
>
> Kris
>
Now I understand -- there are actually 2 separate problems -- one with 
top code, which is the same on all systems and another porblem wihth ps 
on two amd64 machines I am running:

First computer FreeBSD 7.1-PRERELEASE #2 (exact copy / paste) :

# ps -ax|grep mysql; echo; ps -axH|grep mysql
  981 con- IW     0:00.00 /bin/sh /usr/local/bin/mysqld_safe 
--defaults-extra-file=/var/db/mysql/my.c
 1019 con- S     98:00.87 /usr/local/libexec/mysqld 
--defaults-extra-file=/var/db/mysql/my.cnf --base
12266  p0  S+     0:00.00 grep mysql

  981 con- IW     0:00.00 /bin/sh /usr/local/bin/mysqld_safe 
--defaults-extra-file=/var/db/mysql/my.c
 1019 con- S      0:01.21 /usr/local/libexec/mysqld 
--defaults-extra-file=/var/db/mysql/my.cnf --base
 1019 con- S      0:00.11 /usr/local/libexec/mysqld 
--defaults-extra-file=/var/db/mysql/my.cnf --base
 1019 con- I      3:13.38 /usr/local/libexec/mysqld 
--defaults-extra-file=/var/db/mysql/my.cnf --base
 1019 con- I      0:00.08 /usr/local/libexec/mysqld 
--defaults-extra-file=/var/db/mysql/my.cnf --base
 1019 con- S      0:00.02 /usr/local/libexec/mysqld 
--defaults-extra-file=/var/db/mysql/my.cnf --base
12268  p0  R+     0:00.00 grep mysql

3.xx minutes seems to be correct here, not 98.

Second computer FreeBSD 7.1-PRERELEASE #3 (exact copy / paste):

# ps -ax|grep mysql; echo; ps -axH|grep mysql
 1015 con- I      0:00.01 /bin/sh /usr/local/bin/mysqld_safe 
--defaults-extra-file=/var/db/mysql/my.c
 1079 con- S    582:49.60 [mysqld]

 1015 con- I      0:00.01 /bin/sh /usr/local/bin/mysqld_safe 
--defaults-extra-file=/var/db/mysql/my.c
 1079 con- S      2:00.40 [mysqld]
 1079 con- I      0:00.00 [mysqld]
 1079 con- I      0:01.32 [mysqld]
 1079 con- I      0:47.04 [mysqld]
 1079 con- I      0:03.56 [mysqld]
 1079 con- S      0:26.43 [mysqld]
 1079 con- S      3:13.97 [mysqld]
 1079 con- S      4:12.72 [mysqld]
 1079 con- S      0:03.72 [mysqld]

582 minutes is clearly wrong.


Sincerely,
O.K.


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