| From: | Michael Paquier <michael(dot)paquier(at)gmail(dot)com> |
|---|---|
| To: | Nikhil Sontakke <nikhils(at)2ndquadrant(dot)com> |
| Cc: | Stas Kelvich <s(dot)kelvich(at)postgrespro(dot)ru>, Simon Riggs <simon(at)2ndquadrant(dot)com>, PostgreSQL mailing lists <pgsql-hackers(at)postgresql(dot)org>, Jesper Pedersen <jesper(dot)pedersen(at)redhat(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com> |
| Subject: | Re: Speedup twophase transactions |
| Date: | 2017-01-31 06:06:44 |
| Message-ID: | CAB7nPqRTxPu=X15zFe7UNXN_VtA5tMieFh7=VuWr06AXdoXQ0w@mail.gmail.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
On Tue, Jan 31, 2017 at 2:58 PM, Nikhil Sontakke
<nikhils(at)2ndquadrant(dot)com> wrote:
>>> CheckPointTwoPhase() in (5) does not sync this prepared transaction
>>> because the checkpointer's KnownPreparedList is empty.
>>
>> And that's why this needs to be stored in shared memory with a number
>> of elements made of max_prepared_xacts...
>
> Yeah. Was thinking about this yesterday. How about adding entries in
> TwoPhaseState itself (which become valid later)? Only if it does not
> cause a lot of code churn.
That's possible as well, yes.
--
Michael
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Michael Paquier | 2017-01-31 06:07:55 | Re: IF (NOT) EXISTS in psql-completion |
| Previous Message | Fabien COELHO | 2017-01-31 06:04:33 | Re: \if, \elseif, \else, \endif (was Re: PSQL commands: \quit_if, \quit_unless) |