Disk read/write speed problem in LXC

[davitcult]

Hello,

I'm having some trouble with the write/reading speed in all of my LXC container.

I've done 2 speed test, the first one on the proxmox shell and i got : 1GB/s. The other one on an LXC container : 336MB/s. The both test was done with this command :
dd if=/dev/zero of=/tmp/output bs=200k count=10k; rm -f /tmp/output

My configuration :

• Intel(R) Xeon(R) CPU E5-2650 v2 @ 2.60GHz (1 Socket) (same thing with 2 socket)
• 32 GB of ram
• 8 HDD seagate 900gb in raid 50 using an PERC H710
• Dell R620

What is wrong with my configuration ?

Thanks.