Hi again,
A further update, and it looks like I have finally been able to fix the
problem.
I used gdb to discover where the process is hanging.
As far as I can tell, the processes are looping inside
ExecScan
calling ExecQual
calling ExecEvalScalarArrayOp
ExecScan was
Hmmm, just tested with the extra conditional indexes in the production
system, and it still took 19 minutes for the first group of queries (23
million entries, 6000 record updates, 8 processes). Afterwards, there were
no such delays.
Munin reports that during those 19 minutes there were,
Hi again,
I have now had time to do further research about this issue. I have been
able to produce a script (available on request) that reproduces the
problem, even in tables as small as 100 items and using a single thread,
and as a result may have located an area that may cause the problem: A
Hello all,
I am running a Postgresql 9.2 system (IIRC v9.2.4; I am about to upgrade
to 9.2.6) on a system with 32-cores, 256GB RAM, 64GB shared RAM for
postgresql. The applications I am running are written using Django
(currently v1.5)
For a while I have been observing what may be
On Sat, Jan 04, 2014 at 12:14:42PM +0100, Yngve N. Pettersen wrote:
The update query looks like this:
UPDATE queue SET state = E'S' WHERE state = E'I' AND id IN (list
of integers) RETURNING id;
There is a BEGIN/COMMIT wrap around the operation, including the
SELECT query.
Am I right
Hi,
On Sat, 04 Jan 2014 16:23:42 +0100, Andrew Sullivan a...@crankycanuck.ca
wrote:
On Sat, Jan 04, 2014 at 12:14:42PM +0100, Yngve N. Pettersen wrote:
The update query looks like this:
UPDATE queue SET state = E'S' WHERE state = E'I' AND id IN (list
of integers) RETURNING id;
There is a
On Sat, Jan 04, 2014 at 07:07:08PM +0100, Yngve N. Pettersen wrote:
I tried that before, but ran into some issues, IIRC a similar looping
problem as this where queries never ended. I split it up in an attempt to
solve that problem.
Pulling the data out into the application and sending it back
On Sat, 04 Jan 2014 19:40:31 +0100, Andrew Sullivan a...@crankycanuck.ca
wrote:
On Sat, Jan 04, 2014 at 07:07:08PM +0100, Yngve N. Pettersen wrote:
I tried that before, but ran into some issues, IIRC a similar looping
problem as this where queries never ended. I split it up in an attempt
