[Tinyos-devel] FTSP testing result

Omprakash Gnawali gnawali at usc.edu
Fri Feb 6 00:18:40 PST 2009


Top graph shows the result from about 1 hr run:
http://enl.usc.edu/~om_p/net2/ftsp/

- om_p

On Thu, Feb 5, 2009 at 10:40 PM, Branislav Kusy <kusy at stanford.edu> wrote:
> fixes checked in (both CC2420 stack and the timesync patch from thomas)!
>
> brano
>
> Omprakash Gnawali wrote:
>>
>> I can certainly try Motelab but waiting for the fixes to be patched in...
>>
>> - om_p
>>
>> On Tue, Feb 3, 2009 at 5:23 PM, Matt Welsh <mdw at eecs.harvard.edu> wrote:
>>>
>>> Can you try on Motelab?
>>>
>>> On Feb 3, 2009, at 2:18 AM, Omprakash Gnawali wrote:
>>>
>>>> I ran FTSP for a few hours on Tutornet and the result is not good. The
>>>> nodes go out-of-sync frequently enough to make the system unusable.
>>>>
>>>> Setup: I updated my tos directory from CVS head earlier today. I
>>>> changed tests/TestFtsp to log FTSP time every 10s. 56 nodes total.
>>>> "PFLAGS += -DTIMESYNC_RATE=30" added to the Makefile.
>>>>
>>>> Here are some results:
>>>> http://enl.usc.edu/~om_p/net2/ftsp/
>>>>
>>>> Every 10s, for each node, I plot a point on the first graph if the
>>>> getGlobalTime() returns a FAIL indicating unavailability of global
>>>> time. If there are no dots on the graph, it would mean the nodes have
>>>> a valid global time at all times.
>>>>
>>>> With Trickle timer, the results are worse, but maybe we should fix the
>>>> periodic case before we get to Trickle. Turns out the
>>>> consistency/PULL-bit is more complex than I had thought but it should
>>>> be doable.
>>>>
>>>> - om_p
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>>>>
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>>>
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