linux-kernel - Re: 2.6.21-rc1: CIFS cheers, NFS4 jeers

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Date:	Wed, 28 Feb 2007 08:35:54 -0500
From:	Bill Davidsen <davidsen@....com>
To:	Florin Iucha <florin@...ha.net>
CC:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: 2.6.21-rc1: CIFS cheers, NFS4 jeers

Florin Iucha wrote:
> On Tue, Feb 27, 2007 at 09:36:23PM -0500, Bill Davidsen wrote:
>   
>> Florin Iucha wrote:
>>     
>>> Hello, it's me and my 70 GB of photos again.
>>>
>>> I have tested both CIFS and NFSv4 clients in kernel 2.6.20-rc1 . CIFS
>>> passed with flying colors and NFSv4 stalled after 7 GB.
>>>       
>
>   
>> Neil has been diddling NFS, I did some light testing with 2.6.20-git14 
>> with 190GB of mp3 and mpg files (library of congress folk music) without 
>> hangs. Just "did it work" tests, copy 20-30GB to server, do md5 on the 
>> data pulled back from the server.
>>
>> Didn't hang, performance testing later.
>>     
>
> 2.6.20-rcX used to copy all files then hang on certain operations that
> I think used the VFS.  2.6.21-rc1 stalls the NFS transfer itself after
> several GB.  The data was never corrupted.
>
> Have you tried copying _ALL_ 190 GB to the server?

No, but as noted I was doing 20-30GB, so if "several" is a small number 
I'm not seeing that behavior. I'm using a Gbit connection if that is not 
the same as your setup. I have additional testing queued for time 
available this week.

-- 
bill davidsen <davidsen@....com>
  CTO TMR Associates, Inc
  Doing interesting things with small computers since 1979

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