Log query statistics

["Rubén Rubio" <tk421.1@xxxxxxxxx>]

Hi,

Im trying to disable query statistics from log, and I am
unable to do it. Cannot find the correct option. I have been cheking
google, postgres documentation, i didn't found how to do it so ... I am
writting here:

I have my logs full of this info:

[...]
DETAIL:  ! system usage stats:
        !       0.001546 elapsed 0.001000 user 0.000000 system sec
        !       [0.097985 user 0.008998 sys total]
        !       0/0 [0/0] filesystem blocks in/out

        !       0/93 [0/3920] page faults/reclaims, 0 [0] swaps
        !       0 [0] signals rcvd, 0/0 [0/0] messages rcvd/sent
        !       0/0 [5/11] voluntary/involuntary context switches
        ! buffer usage stats:

        !       Shared blocks:          0 read,          0 written, buffer hit rate = 100.00%
        !       Local  blocks:          0 read,          0 written, buffer hit rate = 0.00%
        !       Direct blocks:          0 read,          0 written

LOG:  QUERY STATISTICS
DETAIL:  ! system usage stats:
        !       0.000610 elapsed 0.000999 user 0.000000 system sec
        !       [0.098984 user 0.008998 sys total]
        !       0/0 [0/0] filesystem blocks in/out

        !       0/22 [0/3942] page faults/reclaims, 0 [0] swaps
        !       0 [0] signals rcvd, 0/0 [0/0] messages rcvd/sent
        !       0/0 [5/12] voluntary/involuntary context switches
        ! buffer usage stats:

        !       Shared blocks:          0 read,          0 written, buffer hit rate = 100.00%
        !       Local  blocks:          0 read,          0 written, buffer hit rate = 0.00%
        !       Direct blocks:          0 read,          0 written

LOG:  QUERY STATISTICS
[...]

How to disable this output ? Im using postgres 8.2.4

Thanks in advance!
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