Re: [HACKERS] [PATCHES] BUG #2569: statement_timeout bug on

From: Bruce Momjian <bruce(at)momjian(dot)us>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: pgsql-hackers(at)postgresql(dot)org, James <im-james(at)hotmail(dot)com>, pgsql-bugs(at)postgresql(dot)org, PostgreSQL-patches <pgsql-patches(at)postgresql(dot)org>
Subject: Re: [HACKERS] [PATCHES] BUG #2569: statement_timeout bug on
Date: 2006-08-09 21:18:22
Message-ID: 200608092118.k79LIMd21863@momjian.us
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OK, done.

---------------------------------------------------------------------------

Tom Lane wrote:
> Bruce Momjian <bruce(at)momjian(dot)us> writes:
> > Tom Lane wrote:
> >> Seems like this probably ought to round up not down:
>
> > I thought about that, but because statement_timeout is in millis, and
> > not micros, we can't have a value that gets rounded down. I am
> > thinking a cleaner solution is to check for secs and if that is 0 and
> > microsecs < 1000, you set millis = 1.
>
> This is much uglier, probably slower, and fixes the problem only for
> the zero case --- it is just as wrong to wait 1 msec when the caller
> asked for 1.5 msec. And per your own observation, statement_timeout
> is not the only source of the wait values, so this code must not
> assume that the value is a multiple of 1msec.
>
> Please do it the other way.
>
> regards, tom lane
>
> ---------------------------(end of broadcast)---------------------------
> TIP 5: don't forget to increase your free space map settings

--
Bruce Momjian bruce(at)momjian(dot)us
EnterpriseDB http://www.enterprisedb.com

+ If your life is a hard drive, Christ can be your backup. +

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