Re: anole's failed timeouts test - Mailing list pgsql-hackers

From Tom Lane
Subject Re: anole's failed timeouts test
Date
Msg-id 11596.1549858093@sss.pgh.pa.us
Whole thread Raw
In response to anole's failed timeouts test  (Thomas Munro <thomas.munro@enterprisedb.com>)
List pgsql-hackers
Thomas Munro <thomas.munro@enterprisedb.com> writes:
> Hello,
>  step lsto: SET lock_timeout = 5000; SET statement_timeout = 6000;
>  step update: DELETE FROM accounts WHERE accountid = 'checking'; <waiting ...>
>  step update: <... completed>
> -ERROR:  canceling statement due to lock timeout
> +ERROR:  canceling statement due to statement timeout

> No matter how slow the machine is, how can you manage to get statement
> timeout to fire first?

The statement timer starts running first; the lock timer only starts
to run when we begin to wait for a lock.  So if the session goes to
sleep for > 1 second in between those events, this is unsurprising.

There are a bunch of tests in timeouts.spec that are unreasonably
slow because the timeouts have been whacked until even very slow/
overloaded machines will pass the tests.  Maybe we need to tweak
this one too.

            regards, tom lane


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