some simple nfs-benchmarks on 5.4 RC2

[Eric Anderson]

Claus Guttesen wrote:
>>What state is nfsd in?  Can you send the output of this:
>>ps -auxw|grep nfsd
>>while the server is slammed?
> 
> 
> elin~%>ps -auxw|grep nfsd
> root      378  3,7  0,0  1412   732  ??  D    Tor07am   4:08,82 nfsd:
> server (nfsd)
> root      380  3,5  0,0  1412   732  ??  D    Tor07am   1:56,52 nfsd:
> server (nfsd)
> root      379  3,4  0,0  1412   732  ??  D    Tor07am   2:34,96 nfsd:
> server (nfsd)
> root      381  3,0  0,0  1412   732  ??  D    Tor07am   1:31,72 nfsd:
> server (nfsd)
> root      382  3,0  0,0  1412   732  ??  S    Tor07am   1:14,97 nfsd:
> server (nfsd)
> root      377  2,8  0,0  1412   732  ??  D    Tor07am  10:18,51 nfsd:
> server (nfsd)
> root      383  2,2  0,0  1412   732  ??  S    Tor07am   1:03,79 nfsd:
> server (nfsd)
> root      387  2,0  0,0  1412   732  ??  S    Tor07am   0:41,69 nfsd:
> server (nfsd)
> root      388  2,0  0,0  1412   732  ??  D    Tor07am   0:38,09 nfsd:
> server (nfsd)
> root      384  1,9  0,0  1412   732  ??  S    Tor07am   0:55,95 nfsd:
> server (nfsd)
> root      385  1,8  0,0  1412   732  ??  S    Tor07am   0:50,19 nfsd:
> server (nfsd)
> root      389  1,5  0,0  1412   732  ??  S    Tor07am   0:35,06 nfsd:
> server (nfsd)
> root      386  1,4  0,0  1412   732  ??  S    Tor07am   0:45,38 nfsd:
> server (nfsd)
> root      391  1,2  0,0  1412   732  ??  S    Tor07am   0:27,78 nfsd:
> server (nfsd)
> root      394  1,1  0,0  1412   732  ??  S    Tor07am   0:21,18 nfsd:
> server (nfsd)
> root      395  1,1  0,0  1412   732  ??  S    Tor07am   0:20,38 nfsd:
> server (nfsd)
> root      392  1,0  0,0  1412   732  ??  S    Tor07am   0:24,99 nfsd:
> server (nfsd)
> root      390  1,0  0,0  1412   732  ??  S    Tor07am   0:31,39 nfsd:
> server (nfsd)
> root      393  0,9  0,0  1412   732  ??  S    Tor07am   0:22,27 nfsd:
> server (nfsd)
> root      396  0,9  0,0  1412   732  ??  D    Tor07am   0:19,31 nfsd:
> server (nfsd)
> root      376  0,0  0,0  1540  1032  ??  Is   Tor07am   0:00,04 nfsd:
> master (nfsd)
> 
> 
>>I think you are disk bound..  You should not be disk bound at this point with a
>>good RAID controller..
> 
> 
> Good point, it's an atabeast from nexsan.

Looks like they are indeed waiting on disk.. You could try making two 6 disk 
raid5 in your controller, then striping those with vinum.  That might help. 
Possibly, if your controller supports it, setting up the array as JBOD, and then 
use vinum to build your raid 5 (not sure if it will be faster or not).

Eric


-- 
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Eric Anderson        Sr. Systems Administrator        Centaur Technology
A lost ounce of gold may be found, a lost moment of time never.
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