From: andrew@walrond.org
To: linux-kernel@vger.kernel.org
Subject: Re: 2.6.18 intermittent parallel build failure
Date: Thu, 12 Oct 2006 07:52:35 +0000 [thread overview]
Message-ID: <20061012075235.GB2508@pelagius.h-e-r-e-s-y.com> (raw)
In-Reply-To: <20061011112558.GA23147@pelagius.h-e-r-e-s-y.com>
On Wed, Oct 11, 2006 at 11:25:58AM +0000, andrew@walrond.org wrote:
> When compiling the kernel on a Sun T1000 ( Niagra - 6 cores/24
> threads) with
>
> make -j12
>
> I occasionally see failures like:
>
This was due a serious bug in gnu make; see
https://savannah.gnu.org/bugs/?14853
This effects most of the recent make releases, and is _not_
sun/sparc/solaris specific, so don't stop reading the bug report at
the first line ;)
I've posted a patch against make-3.81 which fixes it for me.
Symptoms: Random crashing of make worker sub-processes at high -j#.
More pronounced when threads are waiting on i/o (make enables SIGCHLD
interrupts for short periods which can interrupt read(2) in the worker
threads and EINTR isn't handled)
This will likely effect anyone using large -j# on larger
multi-core/multi-processor machines, so BEWARE!
Andrew Walrond
prev parent reply other threads:[~2006-10-12 7:52 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-11 11:25 andrew
2006-10-12 7:52 ` andrew [this message]
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