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A900 performance

Jackiez
748 Views

Hi, ONTAP experts,

 

        We have a A900 performance case.  We use fusion to get 33GB/s + performance data(32KB block, 100% sequential read). But at customer site, we test the performance , only get 23GB/s(32KB block, 100% sequential read, 2 Aggr per controller, total 4 Aggr, 16 volumes) ,latency 5ms. we use 9 client (100Gb NIC per client) to connect one 100Gb switch , then connect 8 ports to A900 , ONTAP version is 9.12.1P3. 

 

    Would you share some experience on how to optimize A900 performance (especially Bandwidth) ?

    (BTW , when we use 1MB block,  get 30GB/s , but just keeps a few seconds, not consistent)

     

4 REPLIES 4

TMACMD
681 Views

You are lacking so much information for the community to be helpful....

What is/are the client(s)? how are they connected? NFS/CIFS? v3/v4/v4.1/v4.2? SMB2/SMB3?

Operating systems? mount parameters...

 

I mean...give us something

 

Jackiez
672 Views

Hi, TMACMD,

 

        Thank you !  Here is more details information : client ,ubuntu 18.04, nfs3.0; mount parameters :

mount -t nfs -o vers=3,nolock,proto=tcp,rsize=1048576,wsize=1048576,hard,10.199.199.105:/vol1 /netapp01

TMACMD
662 Views

If you haven’t done so, you should really take a hard look at https://www.netapp.com/media/10720-tr-4067.pdf

 

there are many details in this doc that should assist with improving performance. 

second, you are using a large read/wire size. If I recall, ONTAP defaults to 64k and you are teeing to use 1M. You will need to modify the nfs svm then remount the clients

Jackiez
582 Views

Hi, TMACMD,

       

        Thanks for your advice !

        We  set  some parameters ,   tcp slot table =128,  nfs tcp -max-xfer-size=1M ,  then we got much better performance data:  32K block,  28-30GBps;  1MB block, 34-36GBps.    Match the sizing performance data.

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