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From: "H. Peter Anvin" <hpa@zytor.com>
Subject: Re: select() bug
Date: 2 Nov 2000 15:53:29 -0800
Organization: Transmeta Corporation, Santa Clara CA
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In-Reply-To: <E13rTfB-00023L-00@the-village.bc.nu> <3A01FC44.8A43FE8B@iname.com>
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Copyright: Copyright 2000 H. Peter Anvin - All Rights Reserved
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Followup to:  <3A01FC44.8A43FE8B@iname.com>
By author:    Paul Marquis <pmarquis@iname.com>
In newsgroup: linux.dev.kernel
>
> Okay, I see your point, thanks.  A couple of comments/questions:
> 
> - Does this make sense with devices with small kernel buffers?  From
> my experimentation, pipes on Linux have a 4K buffer and tend to be
> read and written very quickly.
> 
> - If I'm correct that pipes have a 4K kernel buffer, then writing 1
> byte shouldn't cause this situation, as the buffer is well more than
> half empty.  Is this still a bug?
> 
> Semantic issues aside, since Apache does the test I mentionned earlier
> to determine child status and since it could be misled, should this
> feature be turned off?
> 
> Thanks for your input.
> 

Has anyone considered the possibility of expanding the buffer of
high-traffic pipes?

	-hpa
-- 
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