NFS Tuning

[James Cooley]

Not that I know of :(  I think it is all client-side.  You can specify 
stuff like sync or async in your /etc/exports files, but rsize and wsize 
do not work.

--James Cooley


Brian D. McGrew wrote:

>I'll try that right now, thanks!
>
>Is there a way to change the rsize and wsize on the server end to force
>the clients?
>
>-brian
> 
>Brian D. McGrew { brian at visionpro.com || brian at doubledimension.com }
>---
>  
>
>>YOU!  Off my planet!
>>    
>>
>
>-----Original Message-----
>From: redhat-list-bounces at redhat.com
>[mailto:redhat-list-bounces at redhat.com] On Behalf Of James Cooley
>Sent: Wednesday, March 16, 2005 8:43 AM
>To: General Red Hat Linux discussion list
>Subject: Re: NFS Tuning
>
>Brian,
>
>I've got a couple of ideas.  The first one, is to try to improve your 
>send and receive packet sizes.  This usually defaults to 4K, but 8K 
>tends to have a dramatic improvement on performance, and users commonly 
>set it using the rsize and wsize options like so when mounting from the 
>client-side:
>
>mount -t nfs -o rsize=8192,wsize=8192    ...
>
>If you have a more modern version of Linux at both ends, you can try 
>increasing the sizes even further.
>
>
>Another possibility is to increase the size of the NFS memory buffers on
>
>the server to say 256KB.  On RHEL 4, the default is 128KB.
>
>You can do this by using the following commands:
>
>   echo 262144 > /proc/sys/net/core/rmem_default
>   echo 262144 > /proc/sys/net/core/rmem_max
>
>
>
>Thanks,
>James Cooley
>
>
>
>Brian D. McGrew wrote:
>
>  
>
>>Good morning,
>>
>>
>>
>>Can someone help me with tuning up NFS or point me to a good reference?
>>I'm running several servers, RH7.3, RH9, Solaris 8 and FC3.  We're
>>getting absolutely terrible network performance and it's not just with
>>NFS.  However, I ran up ethereal on a few of the servers and in less
>>then three minutes I captured over a million packets, of which 95.4%
>>were UDP NFS packets.  How do I go about turning up NFS?  I know this
>>    
>>
>is
>  
>
>>way too much traffic for the size of our network and I'm at a complete
>>loss as to what to do.
>>
>>
>>
>>Thanks,
>>
>>
>>
>>-brian
>>
>>
>>
>>Brian D. McGrew { brian at visionpro.com || brian at doubledimension.com }
>>
>>---
>>
>> 
>>
>>    
>>
>>>YOU!  Off my planet!
>>>   
>>>
>>>      
>>>
>>
>> 
>>
>>    
>>
>
>
>  
>


-- 
--
James Cooley
Sr. Systems Analyst
Information Technology
Florida Tech
321-674-7999
jcooley at it.fit.edu