Re: hung backends stuck in spinlock heavy endless loop

On Wed, Jan 14, 2015 at 2:32 PM, Peter Geoghegan <pg@heroku.com> wrote:
> On Wed, Jan 14, 2015 at 12:24 PM, Peter Geoghegan <pg@heroku.com> wrote:
>> Could you write some code to print out the block number (i.e.
>> "BlockNumber blkno") if there are more than, say, 5 retries within
>> _bt_moveright()?
>
> Obviously I mean that the block number should be printed, no matter
> whether or not the P_INCOMPLETE_SPLIT() path is taken or not. So you
> should just move this to the top of the for(;;) loop, so it's always
> available to print:
>
> BlockNumber blkno = BufferGetBlockNumber(buf);

(gdb) print  BufferGetBlockNumber(buf)
$15 = 9

..and it stays 9, continuing several times having set breakpoint.

merlin