Re: SLRU optimization - configurable buffer pool and partitioning the SLRU lock

On Thu, Feb 1, 2024 at 3:44 PM Alvaro Herrera <alvherre@alvh.no-ip.org> wrote:
>
> On 2024-Feb-01, Dilip Kumar wrote:
>
> > On Thu, Feb 1, 2024 at 3:19 PM Alvaro Herrera <alvherre@alvh.no-ip.org> wrote:
> > >
> > > postgres -c lc_messages=C -c shared_buffers=$((512*17))
> > >
> > > 2024-02-01 10:48:13.548 CET [1535379] FATAL:  invalid value for parameter "transaction_buffers": 17
> > > 2024-02-01 10:48:13.548 CET [1535379] DETAIL:  "transaction_buffers" must be a multiple of 16
> >
> > Maybe we should resize it to the next multiple of the SLRU_BANK_SIZE
> > instead of giving an error?
>
> Since this is the auto-tuning feature, I think it should use the
> previous multiple rather than the next, but yeah, something like that.

Okay.
>
> While I have your attention -- if you could give a look to the 0001
> patch I posted, I would appreciate it.
>

I will look into it.  Thanks.

--
Regards,
Dilip Kumar
EnterpriseDB: http://www.enterprisedb.com