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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>
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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


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