Subscribe

Poor performance on V3240

Hi

We have just built a new environment with 2 x V3240’s. Installation appeared all OK but system admins are experiencing problems with performance from hosts.

The environment is 100% Solaris 10 (SPARC) and connected via a 1Gb dedicated storage VLAN. Storage is presented over NFS to the Solaris hosts.

  1. Copying a large file from local storage on UNIX server A to the NetApp volume provides good performance.
  2. Copying a large file from the NetApp volume to UNIX server B local storage provides good performance
  3. Making a duplicate of the file in the filesystem provides poor performance. This is 3 times slower than 1 and 2 above. E.g. volume mounted on unix box and standard cp command used to create a duplicate of the file.

We are struggling to identify the cause. The configuration looks OK and we can prove performance is OK on bulk read/writes described above. The end storage and SAN fabric show no issues.

Has anyone seen a similar situation on V-series in an NFS only environment?

Thanks

Andy

Re: Poor performance on V3240

hi there,

1. local to netapp, one way transfer, 110mb/sec

2. netapp to local, one way transfer, 110mb/sec

3. netapp to same netapp, two way transfer, read and write from same source, packet & protocol overhead +-40mb/sec

Seems fine for me as you are only using 1gbit ethernet?!

Kind regards,

Thomas