On 14/04/2014 10:14 AM, Kevin Grittner wrote:
Ryan Johnson <ryan.johnson@xxxxxxxxxxxxxx> wrote:
every time I shut down a database and bring it back up, SSI seems
to go slower.
There's one thing to rule out up front -- that would be a
long-lived prepared transaction.
Please post the output of these queries:
select version();
show max_prepared_transactions;
select * from pg_prepared_xacts;
Hmm. My machine was rebooted over the weekend for Heartbleed patches, so
I'll have to re-build the database and fire off enough runs to repro.
There are some disadvantages to keeping it in tmpfs...
Meanwhile, a quick question: what factors might cause a prepared
transaction to exist in the first place? I'm running a single-node db,
and I've had only normal database shutdowns, so I wouldn't have expected
any.
Thoughts?
Ryan
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