SAN/Multipathing Performance Questions

gutter007

New Member
May 1, 2012
19
0
1
I have setup a SAN to work with proxmox. The SAN uses multipathing over 4 dedicated NICS.

I have a Dell MD3200 connected to a high speed switch. The configuration is using Jumbo Frames over a 1 Gb line.

I'm able to build and migrate servers on the SAN I setup and built, and functionally, everything is working well.

I'm new to working with SANs, and I want to test the performance of the VMs with the SAN.

I did a simple test by writing a 4 GB server on a virtual machine that is stored on the SAN.

Code:
# time cp 2G.dat test.cp2

real    0m23.844s
user    0m0.048s
sys    0m5.869s

Using dd, I get:
Code:
# time dd if=/dev/zero of=output.dat  bs=200MB  count=10
10+0 records in
10+0 records out
2000000000 bytes (2.0 GB) copied, 8.12433 s, 246 MB/s

real    0m8.322s
user    0m0.003s
sys    0m3.423s


Is there a better way to test the performance, and what sort of numbers should I be getting?

thanks.
myles
 

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