From: | Alvaro Herrera <alvherre(at)2ndquadrant(dot)com> |
---|---|
To: | dbhandary(at)switchfly(dot)com |
Cc: | pgsql-bugs(at)postgresql(dot)org |
Subject: | Re: BUG #11264: Auto vacuum wraparound job blocking everything |
Date: | 2014-08-27 15:39:23 |
Message-ID: | 20140827153923.GD7046@eldon.alvh.no-ip.org |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-bugs |
Alvaro Herrera wrote:
> > (gdb) bt
> > #0 0x00007fb9740eb5b3 in __select_nocancel () from /lib64/libc.so.6
> > #1 0x000000000075ad7a in pg_usleep ()
> > #2 0x00000000004ae2d4 in GetMultiXactIdMembers ()
> > #3 0x000000000047f6cc in heap_prepare_freeze_tuple ()
> > #4 0x000000000057d036 in lazy_vacuum_rel ()
>
> This stall in GetMultiXactIdMembers should only occur when somebody is
> writing the multixact immediately following. It certainly should not
> sleep for long. I'm not sure what's happening here but this is probably
> where the problem is. While waiting, it holds the buffer content lock
> in exclusive mode.
>
> Can you install debug symbols and pageinspect?
If you have debug symbols, please attach to this process, then do in
GDB:
bt full
--
Álvaro Herrera http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
From | Date | Subject | |
---|---|---|---|
Next Message | Dinesh Bhandary | 2014-08-27 15:42:25 | Re: BUG #11264: Auto vacuum wraparound job blocking everything |
Previous Message | Alvaro Herrera | 2014-08-27 15:26:36 | Re: BUG #11264: Auto vacuum wraparound job blocking everything |