linux-kernel - Re: [BUG?] sendfile / distcc

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Message-Id: <20080910234429.1a8bfa1f.akpm@linux-foundation.org>
Date:	Wed, 10 Sep 2008 23:44:29 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	linux-kernel <linux-kernel@...r.kernel.org>,
	netdev <netdev@...r.kernel.org>
Subject: Re: [BUG?] sendfile / distcc

On Wed, 10 Sep 2008 11:27:51 +0200 Peter Zijlstra <peterz@...radead.org> wrote:

> Hi,
> 
> I've been seeing this for a while now, but its still present with -rc5+
> kernels. Its always the local machine failing, never the remotes.
> 
> [root@...ns linux-2.6-rt]# nice ./k opteron build
> time distmake x86_64 O=opteron-build ARCH=x86_64
> testing twins:    distccd running
> testing opteron:  DOWN
> testing taijtu:   distccd running
> testing dyad:     distccd running
> testing lappy:    host running
> testing ubuntu:   host running
> DISTCC_HOSTS= twins/8 taijtu/32 dyad/32
> DISTCC_DIR=/dev/shm/distcc
> DISTCC_SLOTS=72
> 
> ...
> 
> distcc[9931] (dcc_writex) ERROR: failed to write: Connection reset by peer
> distcc[9931] Warning: failed to distribute /mnt/build/linux-2.6-rt/kernel/fork.c to twins/8, running locally instead
> 
> ...
> 
> distcc[12078] (dcc_pump_sendfile) ERROR: sendfile failed: Connection reset by peer
> distcc[12078] (dcc_readx) ERROR: unexpected eof on fd4
> distcc[12078] (dcc_r_token_int) ERROR: read failed while waiting for token "DONE"
> distcc[12078] Warning: failed to distribute /mnt/build/linux-2.6-rt/init/version.c to twins/8, running locally instead
> 

distcc is very good at breaking networking.  I assume 2.6.26 is OK?

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