Re: insert waits for delete with trigger - Mailing list pgsql-performance

Thank you.

How about:

select c.relname, l.pid, l.mode, l.granted,
a.current_query
from pg_locks l, pg_class c, pg_stat_activity a
where
  l.relation = c.oid
  AND l.pid =  a.procpid
order by l.granted, l.pid;


              relname              |  pid  |
mode       | granted |

               current_query


-----------------------------------+-------+------------------+---------+-----------------------------------------------

------------------------------------------------------------------------------------------------------------------------
---------------------------------------------------------------------------------
 q_20040810                 |   488 | AccessShareLock
| t       | <IDLE>
 q_20040810                 |   488 | RowExclusiveLock
| t       | <IDLE>
 q_process                  |  3729 | AccessShareLock
| t       | DELETE FROM q_20040805  WHERE domain_id
='2005761066' AND module='spam'
 q_process                  |  3729 | RowExclusiveLock
| t       | DELETE FROM q_20040805  WHERE domain_id
='2005761066' AND module='spam'
 q_20040805                 |  3729 | AccessShareLock
| t       | DELETE FROM q_20040805  WHERE domain_id
='2005761066' AND module='spam'
 q_20040805                 |  3729 | RowExclusiveLock
| t       | DELETE FROM q_20040805  WHERE domain_id
='2005761066' AND module='spam'
 q_summary                  |  3729 | AccessShareLock
| t       | DELETE FROM q_20040805  WHERE domain_id
='2005761066' AND module='spam'
 q_summary                  |  3729 | RowExclusiveLock
| t       | DELETE FROM q_20040805  WHERE domain_id
='2005761066' AND module='spam'
 q_summary_did_dir_idx      |  3729 | AccessShareLock
| t       | DELETE FROM q_20040805  WHERE domain_id
='2005761066' AND module='spam'
 pg_shadow                         |  7660 |
AccessShareLock  | t       | <IDLE>
 pg_locks                          |  7660 |
AccessShareLock  | t       | <IDLE>
 pg_database                       |  7660 |
AccessShareLock  | t       | <IDLE>
 pg_class                          |  7660 |
AccessShareLock  | t       | <IDLE>
 pg_stat_activity                  |  7660 |
AccessShareLock  | t       | <IDLE>
 pg_class_oid_index                |  7660 |
AccessShareLock  | t       | <IDLE>
 q_process                  |  8593 | AccessShareLock
| t       | DELETE FROM q_20040810  WHERE domain_id
='2002300623' AND module='spam'
 q_process                  |  8593 | RowExclusiveLock
| t       | DELETE FROM q_20040810  WHERE domain_id
='2002300623' AND module='spam'
 q_20040810                 |  8593 | AccessShareLock
| t       | DELETE FROM q_20040810  WHERE domain_id
='2002300623' AND module='spam'
 q_20040810                 |  8593 | RowExclusiveLock
| t       | DELETE FROM q_20040810  WHERE domain_id
='2002300623' AND module='spam'
 q_summary                  |  8593 | AccessShareLock
| t       | DELETE FROM q_20040810  WHERE domain_id
='2002300623' AND module='spam'
 q_summary                  |  8593 | RowExclusiveLock
| t       | DELETE FROM q_20040810  WHERE domain_id
='2002300623' AND module='spam'
 q_summary_did_dir_idx      |  8593 | AccessShareLock
| t       | DELETE FROM q_20040810  WHERE domain_id
='2002300623' AND module='spam'
 q_process                  | 19027 | AccessShareLock
| t       | INSERT INTO q_process (...) SELECT ...
FROM q_20040805  WHERE domain_id='2005761066' AND
module='spam'
 q_process                  | 19027 | RowExclusiveLock
| t       | INSERT INTO q_process (...) SELECT ...
FROM q_20040805  WHERE domain_id='2005761066' AND
module='spam'
 q_20040805                 | 19027 | AccessShareLock
| t       | INSERT INTO q_process (...) SELECT ...
FROM q_20040805  WHERE domain_id='2005761066' AND
module='spam'
 q_did_mod_dir_20040805_idx | 19027 | AccessShareLock
| t       | INSERT INTO q_process (...) SELECT ...
FROM q_20040805  WHERE domain_id='2005761066' AND
module='spam'
(26 rows)


ps -elfww|grep 19027
040 S postgres 19027   870  1  69   0    - 81290
semtim 07:31 ?        00:00:51 postgres: postgres mxl
192.168.0.177:38266 INSERT waiting

--- Tom Lane <tgl@sss.pgh.pa.us> wrote:

> Litao Wu <litaowu@yahoo.com> writes:
> > Did I miss something?
>
> Your join omits all transaction locks.
>
>             regards, tom lane
>




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