perfSONAR User Q&A and Other Discussion

[Larry Blunk <>]

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 Looks like the LIVA X is currently only $10 more on Newegg--

http://www.newegg.com/Product/Product.aspx?Item=N82E16856501011

  Specs show a slightly faster CPU vs. LIVA (N2808 vs. N2807) plus
an extra USB port.  It's also pre-assembled vs. a kit which is a plus.

  One thing to note is that Ubuntu enables the "ondemand" init script
by default which puts the CPU in "powersave" mode.   In testing the
LIVA, I found that this seems to limit throughput a bit in performance
tests.  I get around 900Mbps TCP throughput vs. 940Mbps in
"performance" mode.  Also saw some packet loss when doing UDP tests
with 1500 byte datagrams at 1 Gbps in powersave mode.  You can disable
the script with the following which will leave the CPU in performance
mode.

update-rc.d -f ondemand remove



 -Larry Blunk
  Merit


On 10/13/2015 01:21 PM, Daniel Doyle wrote:
> Hi Casey,
> 
> The Liva Black (or BAT?) was the original tested hardware platform.
> This one in particular (not trying to promote newegg as a vendor,
> just handy link):
> http://www.newegg.com/Product/Product.aspx?Item=N82E16856501007. 
> For the most part it just worked with Ubuntu 12.05 Desktop,
> although a couple of models had a few hardware quirks.
> 
> At IU we're going to be looking at the Liva X as a new release of
> that hardware. There is actually one sitting on my desk right now.
> You can get these from amazon or newegg or whatever today, although
> to the best of my knowledge nobody has done any testing on them
> just yet. If you want one to tinker go ahead, but I might hold off
> on ordering 1000.
> 
> -Dan
> 
>> On Oct 13, 2015, at 1:12 PM, Casey Russell 
>> <
>>  
>> <mailto:>>
>>  wrote:
>> 
>> Group,
>> 
>> We're interested in obtaining a new small node hardware platform 
>> for testing.  I was interested particularly in the LIVA mini-pc.
>> They were mentioned at TechEx and are mentioned on the small node
>> page off the main PS webpage.
>> 
>> What I'm interested in is which of the LIVA mini-PCs has been 
>> tested by I2 or ES.net <http://ES.net> (or others) with
>> PerfSonar? The Liva?  Liva X?  Liva X2?  Liva Core?  I believe
>> what I saw talked about at TechEx was either the Liva or the Liva
>> X, probably the Liva X.
>> 
>> I also remember talk of a new hardware revision about to be 
>> released for these, does anyone know when that should drop
>> (roughly), so I'll know whether to buy this week or wait a couple
>> of weeks?
>> 
>> Thank you
>> 
>> Casey Russell Network Engineer Kansas Research and Education
>> Network 2029 Becker Drive, Suite 282 Lawrence, KS  66047 
>> (785)856-9820  ext 9809 
>> 
>> <mailto:>
> 
> Dan Doyle GlobalNOC Software Developer 1-812-856-3892 
> 
>  
> <mailto:>
> 
> 
> 

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