[Openstack] Network speed issue
rick.jones2 at hp.com
Tue Dec 16 19:39:24 UTC 2014
On 12/16/2014 11:33 AM, Georgios Dimitrakakis wrote:
> I haven't tried that yet
> I 'll do it asap and post the results.
> Can you recommend any specific tests that I should run on netperf?
I would start with this on the VM from which you are executing the scp:
netperf -t TCP_STREAM -H <name or IP of other VM>
If you happen to install from source (preferably top of trunk) I would
before building the netperf binary and then you can do something like:
netperf -t TCP_STREAM -H <name or IP of other VM> -D 1.0 -l <time>
where I would make <time> 10 or 20 seconds longer than it takes before
the scp starts slowing down.
>> On 12/16/2014 11:09 AM, Georgios Dimitrakakis wrote:
>>> gso on
>>> tso on
>>> gro off
>>> got me back to the initial status.
>>> Although now it starts with approximately 65-70MB/s for a few seconds
>>> but then it drops down to 30MB/s
>> What do you see if you use a "pure" networking benchmark such as
>> netperf or iperf?
>> rick jones
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