Re: Backend hanging..

A comlete shot in the dark:

Would using ipcclean help? (Does ipcclean work in
FreeBSD?)

See:
http://www.ca.postgresql.org/users-lounge/docs/7.1/reference/app-ipcclean.html

Andrew Gould

--- Mitch Vincent <mvincent(at)cablespeed(dot)com> wrote:
> Hello guys, I was workin on a project today when I
> noticed something really
> strange starting to happen...
>
> I see backends hanging in mid-query, never to
> return.. I've upped the debug
> level to it's max and get nothing in the logs that
> indicate a problem. If I
> stop and restart the postmaster then the problem
> goes away for a few
> minutes, only to return...
>
> Some other queries seem to go through fine, it seems
> to be centered around
> the table 'customers' as it *seems* like an update
> against that table will
> trigger the problem..
>
> Here is what the processes look like -- what is it
> "waiting" on?
>
> 61795 p2 S 0:00.38
> /usr/local/pgsql/bin/postmaster -o -F -D
> /usr/local/pgsql/data -i (postgres)
>
>
> 61812 p2 S 0:00.58 postmaster: postgres brw
> [local] VACUUM waiting
> (postgres)
> 61823 p2 I 0:01.18 postmaster: postgres brw
> 127.0.0.1 idle in
> transaction (postgres)
> 61836 p2 S 0:01.03 postmaster: postgres brw
> 127.0.0.1 UPDATE waiting
> (postgres)
> 61860 p2 S 0:00.99 postmaster: postgres brw
> 127.0.0.1 idle in
> transaction waiting (postgres)
> 61880 p2 S 0:00.99 postmaster: postgres brw
> 127.0.0.1 idle in
> transaction waiting (postgres)
>
> I'm running this on a Dual PII400 and a Dual PII333
> one with FreeBSD 4.2 and
> one with 4.3 - Both running PG 7.1.2
>
> Any ideas? Thanks!!
>
> -Mitch
>
>
>
>
> ---------------------------(end of
> broadcast)---------------------------
> TIP 6: Have you searched our list archives?
>
> http://www.postgresql.org/search.mpl

__________________________________________________
Do You Yahoo!?
Make international calls for as low as $.04/minute with Yahoo! Messenger
http://phonecard.yahoo.com/