[net2-wg] Deluge T2 Overhead (fwd)

[Razvan Musaloiu-E.]

Hi!

On Mon, 21 May 2007, Razvan Musaloiu-E. wrote:

> Hi!
>
> On Mon, 21 May 2007, Philip Levis wrote:
>
>> On May 21, 2007, at 5:57 PM, Razvan Musaloiu-E. wrote:
>> 
>>> 
>>> 
>>> ---------- Forwarded message ----------
>>> Date: Mon, 21 May 2007 20:35:52 -0400
>>> From: "Chieh-Jan (Mike) Liang" <mliang at tuffmail.com>
>>> To: Razvan Musaloiu-E. <razvanm at jhu.edu>
>>> Subject: Deluge T2 Overhead
>>> 
>>> Hi all,
>>> 
>>> As promised during last Friday's meeting, I have compiled the overhead of 
>>> including Deluge T2. I used RadioCountToLeds as the baseline. Note that 
>>> Deluge T2 can be optionally included as a base station, which means  it 
>>> can take commands from the serial port.
>>> 
>>> No Deluge:
>>>  8452 bytes in ROM
>>>   380 bytes in RAM
>>> 
>>> Deluge:
>>>  20330 bytes in ROM (~12K increase)
>>>   1131 bytes in RAM (~0.8K increase)
>>> 
>>> Deluge (Base station):
>>>  25732 bytes in ROM (~5K increase)
>>>   1709 bytes in RAM (0.6K~ increase)
>> 
>> 
>> This is pretty large; IIRC, Deluge in 1.1 was about 6K program memory and 
>> 150 bytes of RAM. I'm currently looking into CTP's link and route 
>> selection; after I'm done I can look into ways to trim Deluge down.
>
> RadioCountToLeds doesn't use the flash and the dissemination service so we 
> pay the full price for them. I'll change TestDissemination to make use of 
> both in order to get a better comparison.

Here are the results for a merge between TestDissemination and 
apps/tests/storage/Block (which also uses the serial port).

Note: The increase in size is computed against the "No Deluge" version.

With TOSH_DATA_LENGTH=100:

   No Deluge:
     19956 bytes in ROM
      1757 bytes in RAM

   Deluge:
     27740 bytes in ROM (+7784 bytes)
      2633 bytes in RAM (+876 bytes)

   Deluge (Base station):
     30104 bytes in ROM (+10148 bytes)
      2871 bytes in RAM (+1114 bytes)

With normal TOSH_DATA_LENGTH:

   No Deluge:
     19956 bytes in ROM
      1757 bytes in RAM

   Deluge:
     27798 bytes in ROM (+7842 bytes)
      2065 bytes in RAM (+308 bytes)

   Deluge (Base station):
     30162 bytes in ROM (+10206 bytes)
      2159 bytes in RAM (+402 bytes)

The TOSH_DATA_LENGTH=100 is a temporary setting that allows us to get the 
whole meta information in one shot. We'll remove it soon.

--
Razvan ME