Re: Postmaster only takes 4-5% CPU

Hi Jan:

There is no disk activity to wait for.

Thanks.

Jan Poslusny wrote:
> Did not your postmaster wait for harddisk ?
>
> Ruben wrote:
>
>> Hi all:
>>
>> When I run a (big) query from pgsql, postmaster used to take almost
>> 100% of CPU. Now, with aparent no reason, Postmaster only takes 4-5%
>> CPU and the same query takes really longer to finish.
>>
>> I have tried renicing -20 postmaster but it still only takes a small
>> percentage of CPU, while 90% is idle.
>>
>> This is a "top" screen while running the query:
>>
>>   2:27pm  up 5 min,  2 users,  load average: 0,80, 0,26, 0,08
>> 74 processes: 72 sleeping, 2 running, 0 zombie, 0 stopped
>> CPU states:  3,1% user,  2,1% system,  0,0% nice, 94,6% idle
>> Mem:  1031012K av,  246040K used,  784972K free,       0K shrd,
>> 11496K buff
>> Swap: 2040244K av,       0K used, 2040244K free
>> 196916K cached
>>
>>   PID USER     PRI  NI  SIZE  RSS SHARE STAT %CPU %MEM   TIME COMMAND
>>  1165 postgres   0 -20  3476 3476  2912 D <   4,5  0,3   0:02 postmaster
>>   268 root      15   0     0    0     0 SW    0,1  0,0   0:00 kjournald
>>
>> Any idea of how can I get postmaster to eat as much CPU as possible?
>>
>> Thanks a lot! Ruben.
>>
>>
>> ---------------------------(end of broadcast)---------------------------
>> TIP 4: Don't 'kill -9' the postmaster
>>
>