NFS Performance: Weirder And Weirder

[iamatt]

just slap an netapp 8.x with an avere flash box in front if you want
NFS performance...  or isilon.

On Sat, Mar 16, 2013 at 5:43 PM, Mehmet Erol Sanliturk
<m.e.sanliturk at gmail.com> wrote:
> On Sat, Mar 16, 2013 at 3:07 PM, Tim Daneliuk <tundra at tundraware.com> wrote:
>
>> On 03/16/2013 04:20 PM, Mehmet Erol Sanliturk wrote:
>>
>>>
>>>
>>>
>>
>>> With respect to your mount points : /usr1 is spanning TWO different
>>> partitions :
>>>
>>> /dev/ad4s1f    390G    127G    231G    35%    /usr1
>>> /dev/ad6s1d    902G    710G    120G    86%    /usr1/BKU
>>>
>>>
>>> because /usr1/BKU is a sub-directory of  /usr1 .
>>>
>>>
>>> If you create a new directory , for example /usr2 , and /usr2/BKU , and
>>> using this new separate directory for sharing , such as :
>>>
>>> /dev/ad6s1d    902G    710G    120G    86%    /usr2/BKU
>>>
>>> and
>>>
>>>    machine:/usr2/BKU     /BKU     nfs   rw,soft,intr          0  0
>>>
>>>
>>>   will it make difference ?
>>>
>>>
>>> Mehmet Erol Sanliturk
>>>
>>
>>
>> I just tried this and it made no difference.  The same file copied onto
>> the NFS mount on /usr1/shared takes about 20x as long when coppied
>> on to /usr[1|2]/BKU.
>>
>>
>>
>> --
>> ------------------------------**------------------------------**
>> ----------------
>> Tim Daneliuk     tundra at tundraware.com
>> PGP Key:         http://www.tundraware.com/PGP/
>>
>>
>
> Michael  W. Lucas in Absolute FeeBSD , 2nd Edition ,  ( ISBN :
> 978-1-59327-151-0 ) ,
> is suggesting the following ( p. 248 ) :
>
> In client ( mount , or , fstab ) , use options ( -o tcp , intr , soft ,
> -w=32768 , -r=32768 )
>
> tcp option will request a TCP mount instead of UDP mount , because FreeBSD
> NFS defaults to running over UDF .
>
> This subject may be another check point .
>
>
> Mehmet Erol Sanliturk
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