max memory size on input queue?

max memory size on input queue?

[Tom Georgoulias]

Is there any agreement on what is the safest, largest input queue memory 
size?  /etc/syconfig/nfs has an option to turn this value to 256k, so it 
that generally the best setting to use?  What about 512k?

Tom



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Re: max memory size on input queue?

[Matt Schillinger]

On Wed, 2003-06-04 at 11:07, Tom Georgoulias wrote:
> Is there any agreement on what is the safest, largest input queue memory 
> size?  /etc/syconfig/nfs has an option to turn this value to 256k, so it 
> that generally the best setting to use?  What about 512k?
> 
> Tom

I am not an expert on input queues, but from my experience, the 256K
recommendation is based on 8 threads.. the goal is to give 32K to each
thread, so if you have 16 threads, you would want 512K. I do not know if
there is a good way to find out if more on top of 32K would be good..
32K/thread (my servers run 64threads) works well for me so far with 1
Gigabit and two 100Mbit interfaces on each server.


> 
> 
> 
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> This SF.net email is sponsored by:  Etnus, makers of TotalView, The best
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-- 
Matt Schillinger
mschilli@vss.fsi.com





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Re: max memory size on input queue?

[Trond Myklebust]

>>>>> " " == Tom Georgoulias <tom.georgoulias@motorola.com> writes:

     > Is there any agreement on what is the safest, largest input
     > queue memory size?  /etc/syconfig/nfs has an option to turn
     > this value to 256k, so it that generally the best setting to
     > use?  What about 512k?

See the discussion in the NFS-HOWTO.

Cheers,
 Trond


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