Re: hung backends stuck in spinlock heavy endless loop

Merlin Moncure <mmoncure@gmail.com> writes:
> On Wed, Jan 14, 2015 at 8:41 AM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
>> What are the autovac processes doing (according to pg_stat_activity)?

> pid,running,waiting,query
> 7105,00:28:40.789221,f,autovacuum: VACUUM ANALYZE pg_catalog.pg_class

Hah, I suspected as much.  Is that the one that's stuck in
LockBufferForCleanup, or the other one that's got a similar
backtrace to all the user processes?
        regards, tom lane