Re: Serious performance problem

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On 27 October 2015 at 18:17, Stefan Michael Guenther <s.guenther@xxxxxxxxx> wrote:
2 x Intel Gigabit
And ethtool tells me that it is indeed a gigabit link.

How are the configured? are they bonded? what sort of network switch do you have?

Ideally they would be LACP bonded with a switch that supports LACP.  Even so, you would get a max of 1G between individual nodes.

Couple of tests you can do.

- Monitor network load while copying a large file onto the gluster mount using iftop

on the node where the copy is happening:
  iftop -i <network port>

Where network port is the card (eth0 etc) or the bond/bridge

That will dynamically show the load between nodes.

- use iperf to test your raw network speed:
  http://openmaniak.com/iperf.php

Hope this helps


--
Lindsay
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