Re: Priority table or Cache table

On Fri, May 16, 2014 at 8:29 PM, Sameer Thakur <samthakur74@gmail.com> wrote:
> Hello,
> I applied the patch to current HEAD. There was one failure (attached),
> freelist.rej
> <http://postgresql.1045698.n5.nabble.com/file/n5804200/freelist.rej>
>
> Compiled the provided pgbench.c and added  following in .conf
> shared_buffers = 128MB                  # min 128kB
> Shared_buffers=64MB
> Priority_buffers=128MB
>
> I was planning to performance test later hence different values.
>
> But while executing pgbench the following assertion occurs
>
> LOG:  database system is ready to accept connections
> LOG:  autovacuum launcher started
> TRAP: FailedAssertion("!(strategy_delta >= 0)", File: "bufmgr.c", Line:
> 1435)
> LOG:  background writer process (PID 10274) was terminated by signal 6:
> Aborted
> LOG:  terminating any other active server processes
> WARNING:  terminating connection because of crash of another server process
> DETAIL:  The postmaster has commanded this server process to roll back the
> current transaction and exit, because another server process exited
> abnormally and possibly corrupted shared memory.
>
> Is there a way to avoid it? Am i making some mistake?

Sorry for the late reply. Thanks for the test.
Please find the re-based patch with a temp fix for correcting the problem.
I will a submit a proper patch fix later.

Regards,
Hari Babu
Fujitsu Australia