Thomymaster
Contributor
- Joined
- Apr 26, 2013
- Messages
- 142
Hi All
I am pretty new to FreeNAS and set it up on my ESXi environment (5.1U1). I have the problem that within my Windows 7 VM i have veryl low write speeds on 4k read/write approv 30/10MB/s (measured with CrystalDiskMark). Here is my configuration:
Build FreeNAS-8.3.1-RELEASE-p2-x64 (r12686+b770da6_dirty)
Platform Intel(R) Xeon(R) CPU 3040 @ 1.86GHz
Memory 2031MB
HDDs: 4x Seagate Barracuda 7200.11 (ST31500341AS) configured as a RaidZ2 with "force 4K sector"
ZIL: 64GB SSD
L2ARC: none yet
here is my first question:
- how can i configure my SSD (like partitioning) to be used as ZIL and L2ARC ord doesn't this make sense?
My ESXi is connectied via ISCSI to my FreeNAS (JumboFrames enabled to reduce the overhead), using MPIO doesn't improve the read/write speed (i tested already).
In addition, when i do read/write onto the FreeNAS, it gets to a maximum of 100%cpu usage, but as i have 2 CPUs and the total maximum is 200% i assume that it is limited to 1 CPU. Why?
What can i do to improve this situation, add more CPU and/or RAM?
Cheers
Thomy
I am pretty new to FreeNAS and set it up on my ESXi environment (5.1U1). I have the problem that within my Windows 7 VM i have veryl low write speeds on 4k read/write approv 30/10MB/s (measured with CrystalDiskMark). Here is my configuration:
Build FreeNAS-8.3.1-RELEASE-p2-x64 (r12686+b770da6_dirty)
Platform Intel(R) Xeon(R) CPU 3040 @ 1.86GHz
Memory 2031MB
HDDs: 4x Seagate Barracuda 7200.11 (ST31500341AS) configured as a RaidZ2 with "force 4K sector"
ZIL: 64GB SSD
L2ARC: none yet
here is my first question:
- how can i configure my SSD (like partitioning) to be used as ZIL and L2ARC ord doesn't this make sense?
My ESXi is connectied via ISCSI to my FreeNAS (JumboFrames enabled to reduce the overhead), using MPIO doesn't improve the read/write speed (i tested already).
In addition, when i do read/write onto the FreeNAS, it gets to a maximum of 100%cpu usage, but as i have 2 CPUs and the total maximum is 200% i assume that it is limited to 1 CPU. Why?
What can i do to improve this situation, add more CPU and/or RAM?
Cheers
Thomy