Mailing-List:	contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Subscribe:	<mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive:	<http://sources.redhat.com/ml/cygwin/>
List-Post:	<mailto:cygwin AT cygwin DOT com>
List-Help:	<mailto:cygwin-help AT cygwin DOT com>, <http://sources.redhat.com/ml/#faqs>
Sender:	cygwin-owner AT cygwin DOT com
Mail-Followup-To:	cygwin AT cygwin DOT com
Delivered-To:	mailing list cygwin AT cygwin DOT com
Date:	Fri, 22 Nov 2002 11:40:35 +0100
From:	thomas <tom AT huno DOT net>
Reply-To:	thomas <tom AT huno DOT net>
X-Priority:	3 (Normal)
Message-ID:	<21545718.20021122114035@huno.net>
To:	"Max Bowsher" <maxb AT ukf DOT net>, cygwin AT cygwin DOT com
Subject:	Re: pipe performance problem
In-Reply-To:	<007301c291ff$eb9ce050$78d96f83@pomello>
References:	<777770015 DOT 20021122040845 AT huno DOT net>
	<007301c291ff$eb9ce050$78d96f83 AT pomello>
MIME-Version:	1.0

Max Bowsher <maxb AT ukf DOT net> wrote:

> thomas <tom AT huno DOT net> wrote:

>> it seems that the pipe code with recent cygwin versions causes a
>> performance problem when much data (3.6 MB per second in this case) is
>> transferred from one program to another.
>>
>> i use mkisofs to make an iso filesystem from files on the fly and pipe
>> the output directly to cdrecord which writes the fs to the cd-r. cmd
>> line looks like this:
>>
>> mkisofs -J -R -l * | cdrecord -dev=1,0,0 -v -dummy -speed=24 -

> Out of interest, does it work if you use a temporary file, instead of a
> pipe?
> (Just want to narrow the problem as far as possible).

yes works without any problems. my first bug report was a bit misleading
here. i only get problems when i pipe the whole thing.

thomas


--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Bug reporting:         http://cygwin.com/bugs.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/

- Raw text -