[lustre-discuss] Lustre poor performance

[Riccardo Veraldi]

On 8/17/17 9:22 PM, Dennis Nelson wrote:
> It appears that you are running iozone on a single client?  What kind of network is tcp5?  Have you looked at the network to make sure it is not the bottleneck?
>
yes the data transfer is on ib0 interface and I did a memory to memory
test through InfiniBand QDR  resulting in 3.7GB/sec.
tcp is used to connect to the MDS. It is tcp5 to differentiate it from
my other many Lustre clusters. I could have called it tcp but
it does not make any difference performance wise.
I ran the test from one single node yes, I ran the same test also
locally on a zpool identical to the one on the Lustre OSS.
 Ihave 4 identical servers each of them with the aame nvme disks:

server1: OSS - OST1 Lustre/ZFS  raidz1

server2: OSS - OST2 Lustre/ZFS  raidz1

server3: local ZFS raidz1

server4: Lustre client