| From: | Robert Haas <robertmhaas(at)gmail(dot)com> |
|---|---|
| To: | Ildus Kurbangaliev <i(dot)kurbangaliev(at)postgrespro(dot)ru> |
| Cc: | "andres(at)anarazel(dot)de" <andres(at)anarazel(dot)de>, Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org>, Alexander Korotkov <a(dot)korotkov(at)postgrespro(dot)ru>, Heikki Linnakangas <hlinnaka(at)iki(dot)fi> |
| Subject: | Re: [PATCH] Refactoring of LWLock tranches |
| Date: | 2015-11-19 16:09:38 |
| Message-ID: | CA+TgmoaH0wiAW1JRCMAEiforw1GGWCBVnKBRtU1CTe0NNFjjFw@mail.gmail.com |
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On Thu, Nov 19, 2015 at 9:04 AM, Ildus Kurbangaliev
<i(dot)kurbangaliev(at)postgrespro(dot)ru> wrote:
> The moving base tranches to shared memory has been discussed many times.
> The point is using them later in pg_stat_activity and other monitoring
> views.
I'm not in agreement with this idea. Actually, I'd prefer that the
tranches live in backend-private memory, not shared memory, so that we
could for example add backend-local counters to them if desired. The
SLRU patch is the first time we've put them in shared memory, but it
would be easy to keep only the things that the tranche needs to point
to in shared memory and put the tranche itself back in each backend,
which I tend to think is what we should do.
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
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