Re: [COMMITTERS] pgsql: Move each SLRU's lwlocks to a separate tranche.

Robert Haas <robertmhaas@gmail.com> writes:
> On Fri, Mar 25, 2016 at 9:48 AM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
>> Robert Haas <robertmhaas@gmail.com> writes:
>>> It's stupid that we keep spending time and energy figuring out which
>>> shared memory data structures require alignment and which ones don't.
>>> Let's just align them *all* and be done with it.  The memory cost
>>> shouldn't be more than a few kB.

>> I think such a proposal should come with a measurement, not just
>> speculation about what it costs.

> About 6kB with default settings.  See below.

Sold, then.
        regards, tom lane