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Date:      Fri, 28 Dec 2001 14:11:32 -0500
From:      Bosko Milekic <bmilekic@technokratis.com>
To:        "Julien B." <jbe@cpu.ath.cx>
Cc:        freebsd-stable@FreeBSD.ORG
Subject:   Re: NFS crashs with low kern.ipc.nmbclusters
Message-ID:  <20011228141132.B35188@technokratis.com>
In-Reply-To: <20011228140310.A2232@harimandir>; from jbe@cpu.ath.cx on Fri, Dec 28, 2001 at 02:03:10PM %2B0100
References:  <20011228140310.A2232@harimandir>

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On Fri, Dec 28, 2001 at 02:03:10PM +0100, Julien B. wrote:
> I have recently had my system crashing under high NFS load. I could reproduce
> it with no problem, and it seams to happen with 1 NFSv3 linux client, uploading
> big files (the crash happens after 300-400 Mbytes). Note that i've had the 
> same "success" with -STABLE and 4.4-RELEASE. 
> Just before crashing, syslog says "m_clalloc failed, consider increase 
> NMBCLUSTERS value", and the system crashs a couple of seconds later.
> I did change the value of NMBCLUSTERS to 8192 (default is something around
> 1024), and it really fixed that problem.
> Is this usual to see systems crashing after unsuccessful m_clalloc() calls ?  

 No, it is no longer usual. Please provide a stack trace. I have a
 feeling you may be crashing somewhere in the NFS code that does not
 check for a NULL being returned from m_clalloc.

> -- 
> Regards
> 
> Julien B

-- 
 Bosko Milekic
 bmilekic@FreeBSD.org


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