Hi Community,
i need some help to get rid of a performance problem.
If i create a snapshot of a vm on my netapp array with the "snapshot vm memory" option the vmkernel port is not saturated, so that the craetion process takes long time.
As a benchmark i started a storage vmotion which saturates my array.
PORT-ID USED-BY TEAM-PNIC DNAME PKTTX/s MbTX/s PKTRX/s MbRX/s %DRPTX %DRPRX ACTN/s
50331652 vmk2 vmnic5 vSwitch1 26589.29 1997.36 33060.58 2011.38 0.00 0.00 17132.35 svmotion
50331652 vmk2 vmnic5 vSwitch1 1634.88 173.42 2201.95 38.39 0.00 0.00 1846.65 snap
DEVICE PATH/WORLD/PARTITION DQLEN WQLEN ACTV QUED %USD LOAD CMDS/s READS/s WRITES/s MBREAD/s MBWRTN/s DAVG/cmd KAVG/cmd GAVG/cmd QAVG/cmd
{NFS}Test - - - 6 - - - 4016.83 0.58 4016.25 0.01 250.71 1.39 - 6.74 - svmotion from sas array to the sata test array
{NFS}Test - - - 0 - - - 213.62 30.52 183.11 0.48 19.73 0.38 - 0.59 - create snapshot on the array
Offset for NFS:
intel nic 82599 10gbit -> vmnic5 -> vmk2 -> MTU 9000
Settings like described in the netapp manual.
Isolated one VM on ESX and Datastore to avoid any concurrency.
Would be awesome if anyone can give me a hint.