On 03-07-12 12:56, Neil Horman wrote:
On Tue, Jul 03, 2012 at 10:07:16AM +0200, Wido den Hollander wrote:
On 03-07-12 09:42, Madhusudhana U wrote:
Hi all,
I am trying to increase the throughput in the cluster by enabling
LACP on both in clients and all ceph cluster nodes. Each client and
ceph nodes has two 1G Ethernet interface which I want to aggregate
and make it 2G. LACP has been configured at switch side too. But even after
the configuration, I am not seeing any through put increase in ceph tell osd
bench command and also dd. They are taking the same amount as earlier. I am
constantly seeing around 100MB/sec throughput in both DD and ceph bench
commands. Can someone suggest me how i can increase the throughput of the
cluster ? Below are my configurations.
Can you verify if both NIC's are actually doing something? Use
bwm-ng for example?
Wido
I would imagine they aren't, as the output hash function for 802.3ad trunking is
based on source and destination address, so if your test just writes from a
single client to a single OSD, it will just use one link.
He mentioned "both in clients and ..." So I figured he had multiple clients.
But yes, you are right about the hashing. He should be using multiple
clients to use both NIC's in the Ceph nodes.
Wido
Neil
No of OSD's : 5
No of MON's : 3
No of MDS's : 2
Linux Kernel : 3.4.4
Ceph version : 0.47.3
Hard disks : 2x160G SAS drives (raid 0 configuration)
CPU : Intel(R) Xeon(R) Quad CPU E5506 @ 2.13GHz
Memory : 6G
Thanks
__M
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