[Xenomai] Latency test on RP2 vs Odroid-C1

[Xenomai] Latency test on RP2 vs Odroid-C1

[Mathieu Rondonneau]

Hi,

I finally was able to run the latency test on RPI2.

the results are showing: lat best of 7.705 and worst 16.605
with an average of 9.129

Is there  anybody that ran the same test on Odroid C1 board?
I would like to know how does it compare.

This test was run right after the login prompt (no graphics, no Ethernet 
activity, no manually started apps/services other than the systemd ones).

Also ran the xenomai autotune right before.

Is there a database of boards with their test results?

Thanks,
-Mathieu

Re: [Xenomai] Latency test on RP2 vs Odroid-C1

[Gilles Chanteperdrix]

On Wed, Nov 11, 2015 at 07:40:03AM -0800, Mathieu Rondonneau wrote:
> Hi,
> 
> I finally was able to run the latency test on RPI2.
> 
> the results are showing: lat best of 7.705 and worst 16.605
> with an average of 9.129

I do not know whether you ran the latency test under load, but that
is the only way to get meaningful results (i.e. approaching the
worst case latency). In order to run the latency test under load, we
use the xeno-test script, with the LTP testsuite.

-- 
					    Gilles.
https://click-hack.org

Re: [Xenomai] Latency test on RP2 vs Odroid-C1

[Mathieu Rondonneau]

On 15-11-11 08:12 AM, Gilles Chanteperdrix wrote:
> On Wed, Nov 11, 2015 at 07:40:03AM -0800, Mathieu Rondonneau wrote:
>> Hi,
>>
>> I finally was able to run the latency test on RPI2.
>>
>> the results are showing: lat best of 7.705 and worst 16.605
>> with an average of 9.129
>
> I do not know whether you ran the latency test under load, but that
> is the only way to get meaningful results (i.e. approaching the
> worst case latency). In order to run the latency test under load, we
> use the xeno-test script, with the LTP testsuite.
>
Thanks for your suggestion Gilles,
it was not under load for sure.

I tried the xeno-test and cyclictest.
no LTP yet.

I am not sure how does it compare with other boards (beaglebone, odroid 
...) yet.

-Mathieu