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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Christopher Petrilli <petrilli@gmail.com>
Cc: PFC <lists@boutiquenumerique.com>
Cc: Vivek Khera <vivek@khera.org>
Cc: pgsql-performance@postgresql.org
Subject: Re: Impact of checkpoint_segments under continual load conditions
Date: Tue, 19 Jul 2005 14:53:13 -0400
Message-ID: <8375.1121799193@sss.pgh.pa.us> (raw)
In-Reply-To: <59d991c40507191148e6f9ec5@mail.gmail.com>
References: <59d991c4050717100874c08a86@mail.gmail.com>
	<op.st52tvunth1vuj@localhost>
	<59d991c4050719084460b376f1@mail.gmail.com>
	<4541.1121788647@sss.pgh.pa.us>
	<59d991c40507190930244ba9bb@mail.gmail.com>
	<7224.1121791328@sss.pgh.pa.us>
	<59d991c4050719095440cd3de5@mail.gmail.com>
	<7436.1121792725@sss.pgh.pa.us>
	<59d991c405071910133e28031a@mail.gmail.com>
	<7843.1121796596@sss.pgh.pa.us>
	<59d991c40507191148e6f9ec5@mail.gmail.com>

Christopher Petrilli <petrilli@gmail.com> writes:
> On 7/19/05, Tom Lane <tgl@sss.pgh.pa.us> wrote:
>> How *exactly* are you invoking psql?

> It is a subprocess of a Python process, driven using a pexpect
> interchange. I send the COPY command, then wait for the '=#' to come
> back.

Some weird interaction with pexpect maybe?  Try adding "-n" (disable
readline) to the psql command switches.

			regards, tom lane



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