So i'm having an interesting problem with running IOMeter. I'm testing out some new equipment before deploying it to production.
Here is my basic setup:
Dell PowerEdge C2100
12x 450GB 15K SAS
ZFS mirror using all drives
Perc R700 - adaptive reading/write through
VMWare 5.1 connected with iSCSI on a dedicated vlan and switch
I have the entire ZFS LUN presented to VMWare and I carved out a 100GB disk at attached it to a test virtual machine. I'm running IOMeter with an 8k 70% read and random writes. I am consistently pulling 15,000 total IOPS and about 90MB/s read and 70MB/s write. These numbers stay at this level until I reboot the FreeNAS. The very first test I run will see IOPS starting around 3,000 and eventually finishing at 10,000. Reads and write start out very low and go up as well.
The strange part is if I run a second test, the performance goes back up to normal numbers.
Here is my basic setup:
Dell PowerEdge C2100
12x 450GB 15K SAS
ZFS mirror using all drives
Perc R700 - adaptive reading/write through
VMWare 5.1 connected with iSCSI on a dedicated vlan and switch
I have the entire ZFS LUN presented to VMWare and I carved out a 100GB disk at attached it to a test virtual machine. I'm running IOMeter with an 8k 70% read and random writes. I am consistently pulling 15,000 total IOPS and about 90MB/s read and 70MB/s write. These numbers stay at this level until I reboot the FreeNAS. The very first test I run will see IOPS starting around 3,000 and eventually finishing at 10,000. Reads and write start out very low and go up as well.
The strange part is if I run a second test, the performance goes back up to normal numbers.