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Date:      Tue, 24 Sep 2002 09:38:10 -0500
From:      Eric Anderson <anderson@centtech.com>
To:        Eric Anderson <anderson@centtech.com>
Cc:        Terry Lambert <tlambert2@mindspring.com>, freebsd-chat@freebsd.org
Subject:   Re: FreeBSD NFS server using two NICs
Message-ID:  <3D9078D2.8090401@centtech.com>
References:  <3D8A3E52.2090202@centtech.com> <3D8A428B.B96FBE75@mindspring.com> <3D8A458B.2080608@centtech.com> <3D8A4B40.67C8E2A2@mindspring.com> <3D8F66AB.8020309@centtech.com> <3D8F8401.E77A5DA9@mindspring.com> <3D90775C.9080804@centtech.com>

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Eric Anderson wrote:
> Terry Lambert wrote:
> 
>> Make it all fit in one packet.  I don't know what options, etc.,
>> you are using.  I would suggest 1K (1024), so that it will fit
>> in a single packet, even with some extra options set.
>>
>> 1500 is the standard MTU... if it looks small to you, you must
>> have some really whacked-out hardware... and it must violate the
>> ethernet standards.  8-).
> 
> 
> Now, wait - shouldn't this break single NIC servers also?
> When I set up nfsd to only use one nic, it works fine.  It's only with 
> two NICs that I have the problem.
> 
> Also, if I kill the nfsd master process, and leave the children run (the 
> master is always the one that gets the load jacked up eating up 100% of 
> that cpu), the machine continues to serve nfs requests, just not to the 
> machine that pisses it off - but the other processes don't go haywire.

Now I'm emailing myself.. :D

UDP may not be the problem at all - with ONLY TCP set up on the server, 
but still using 2 NICs, I can make the problem happen. However, it is 
not will all Solaris clients - only a small few.  I'm researching now to 
find out what is different.

Thanks for the nudge - looks like I'm sliding downhill fast now.. :D

Eric




-- 
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Eric Anderson	   Systems Administrator      Centaur Technology
The moon may be smaller than Earth, but it's further away.
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