kujinke
Cadet
- Joined
- May 11, 2013
- Messages
- 7
Hi,
I'm new to the ZFS world so bear with me :D.
Last week at work I had some spare time, so ive done some testing with freenas in order to examine performance.
I'm trying to compare performance to some of our in use products (NetApp, Solidfire, VMware VSAN).
Main goal is NFS based Storage to a VMware cluster, Lots of VM's testing, stress testing with FIO over 10's and 100's of vms and mainly alot of random io.
I took out a new HP DL360p Gen9 filled it up with 256GB of RAM and 8 - 2TB enterprise SSD's (Actually 1.92TB - Samsung PM863a), the server also comes with a beast of a dual CPU setup (E5-2687W v3) and a Chelsio T580-LP-CR nic that ive connected to my environment switch.
I set the raid controller to HBA mode and installed FreeNas 11 U3 on a USB Stick.
iperf seems to show pretty solid performance over the network.
I have created a 4x mirrors out of the ssds, and after some google reading I found out that getting a SLOG, and L2 seems as a wasted option on an all flash array.
And to the point - NFS performance to my VMware Cluster had horrible Write speeds, somewhere around 30/40 MB/s while Read speeds kept hitting somewhere around 700-800 MB/s.
Can anyone enlighten me ? Whats wrong with my setup ? and Why write speeds are so bad ?
I'm new to the ZFS world so bear with me :D.
Last week at work I had some spare time, so ive done some testing with freenas in order to examine performance.
I'm trying to compare performance to some of our in use products (NetApp, Solidfire, VMware VSAN).
Main goal is NFS based Storage to a VMware cluster, Lots of VM's testing, stress testing with FIO over 10's and 100's of vms and mainly alot of random io.
I took out a new HP DL360p Gen9 filled it up with 256GB of RAM and 8 - 2TB enterprise SSD's (Actually 1.92TB - Samsung PM863a), the server also comes with a beast of a dual CPU setup (E5-2687W v3) and a Chelsio T580-LP-CR nic that ive connected to my environment switch.
I set the raid controller to HBA mode and installed FreeNas 11 U3 on a USB Stick.
iperf seems to show pretty solid performance over the network.
I have created a 4x mirrors out of the ssds, and after some google reading I found out that getting a SLOG, and L2 seems as a wasted option on an all flash array.
And to the point - NFS performance to my VMware Cluster had horrible Write speeds, somewhere around 30/40 MB/s while Read speeds kept hitting somewhere around 700-800 MB/s.
Can anyone enlighten me ? Whats wrong with my setup ? and Why write speeds are so bad ?