Thread: deadlock timeout?

deadlock timeout?

From
Micah Anderson
Date:
Hi,

        Does anyone know what the postgresql option deadlock_timeout does? I
haven't been able to find any good docs.  The config file
(/etc/postgresql/pg_options) just says its how long to wait before deciding
that there is a deadlock, but does this refer to idle connections or
situations where a query is blocked waiting for a lock?  I thought timing
out idle connections might be useful in trouble shooting some postgres
problems that we are having given that we are seeing a steadily increasing
number of database connections.  All these idle connections can't be
helping.


Thanks!
Micah

--
Micah Anderson
Collective Technologies
www.colltech.com

"To be and not to do is not to be at all"

Re: deadlock timeout?

From
Bruce Momjian
Date:
> Hi,
>
>         Does anyone know what the postgresql option deadlock_timeout does? I
> haven't been able to find any good docs.  The config file
> (/etc/postgresql/pg_options) just says its how long to wait before deciding
> that there is a deadlock, but does this refer to idle connections or
> situations where a query is blocked waiting for a lock?  I thought timing
> out idle connections might be useful in trouble shooting some postgres
> problems that we are having given that we are seeing a steadily increasing
> number of database connections.  All these idle connections can't be
> helping.

I can't find that file inthe source tree, and the description is wrong.
The value is how quickly it will check for a deadlock while waiting for
a lock.  It does not assume it has a deadlock because of any timeout.

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