Re: Debugging a backend stuck consuming CPU - Mailing list pgsql-general

From ktm@rice.edu
Subject Re: Debugging a backend stuck consuming CPU
Date
Msg-id 20160519141613.GC32767@aart.rice.edu
Whole thread Raw
In response to Re: Debugging a backend stuck consuming CPU  (Tom Lane <tgl@sss.pgh.pa.us>)
List pgsql-general
On Thu, May 19, 2016 at 09:58:45AM -0400, Tom Lane wrote:
> "ktm@rice.edu" <ktm@rice.edu> writes:
> > I am investigating a problem with a backend that appears to be stuck
> > and spinning while performing a "DISCARD ALL" command. The system is
> > running an older release 9.2.2.
>
> You do realize that the current release in that series is 9.2.17.
>
> > Are there any bugs that could be causing this behavior?
>
> Known bugs are summarized here:
> http://www.postgresql.org/docs/9.2/static/release.html
>
> > How can I tell what the process is actually doing?
>
> Getting a stack trace with gdb might be informative:
> https://wiki.postgresql.org/wiki/Generating_a_stack_trace_of_a_PostgreSQL_backend
>
>             regards, tom lane
>

Hi,

We do have an upgrade scheduled. I will get a stack trace and see what
information that provides.

Regards,
Ken


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