Re: Prioritizing readdirplus/getattr/lookup

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On Apr 7, 2011, at 10:34 AM, Andrew Klaassen wrote:

> --- On Thu, 4/7/11, Chuck Lever <chuck.lever@xxxxxxxxxx> wrote:
> 
>> On Apr 6, 2011, at 3:25 PM, Andrew Klaassen wrote:
>> 
>>> I have, for now, hacked my way around my problem by
>>> splitting the server's uplink into two separate bonds. 
>>> This seems to have moderated the transaction rate of the HPC
>>> farm and allowed the "ls -l" calls to be served at an
>>> acceptable rate.
>> 
>> Have you created enough nfsd threads on your Linux NFS
>> servers?
> 
> That was one of the things I varied as part of my testing; almost every power of 2 from 8 threads up to 1024 threads.  It actually made things slightly worse, not better, but I can certainly give it a try again.

Is the server an SMP system?  Do you see high CPU load during times of slow performance?

-- 
Chuck Lever
chuck[dot]lever[at]oracle[dot]com




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