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
>>
>