Blond Mobile

As most of you know, JAJAH released a pre-installed Windows Mobile VoIP client for the Japanese EMobile operator.

While working on it, I checked for performance issues and memory leaks. This was critical since in addition to outgoing VoIP calls the application runs in the background and listens to incoming VoIP calls. In order to monitor the performance I used the .Net compact framework remote performance Monitor (RPM). this tool is easy to use, once you understand how to install and use it, and this is the reason for this post.

Installation:

copy netcfrtl.dll and netcflaunch.exe  from C:\ProgramFiles\Microsoft.NET\SDK\ CompactFramework\ v2.0\ WindowsCE\wce500\armv4i to the Windows directory on your device. (to copy from your desktop to your windows mobile device use ActiveSync)

Running the PRM:

Connect your device to the desktop using ActiveSync

Open NetCFRPM.exe from C:\Program Files\Microsoft.NET\SDK\CompactFramework\v2.0\bin

Select "File" and then "Live Counters"

 

In the device box select "ActiveSync"  and in the "application" box enter your application you wish to test. Press "connect". the application will start and you will see the changing counters.

for more details about the counters check out David Kline’s post

 

Using this view you can see the counters change and see what’s going on. to make things easier to monitor, you can have a view of the heap at real time and compare the GC heap at different intervals.

GC Heap View:

Click "View GC Heap" to view the heap status. In this view you can see the number of instances  each object has and the memory it consommes. you may also see the root object that is keeping the object alive, i.e. what is the object that holds a reference to the object and hence its not garbage collected.

 

 

 

Comparing heap states

Its very helpfully comparing different heap states over time. This can help you see the difference in object over time and help you find leaks in various states of your application. When interested to know the heap state click "View GC Heap". when you want to compare the heaps memory states go to "View" and then select "Compare Heap". this view allows you to view the difference in object during the run time.

Last Monday was the second event of Mobile Monday Tel Aviv. The theme was mobile VoIp, a theme close to me. Although sceduled to start the lectures at 19:30, we started at 20:00, half an hour late, due to guests that were still arriving. I think that for the next MoMo event we should allow more time till the lectures start….:) on the bar were cool blue shot glasses courtesy of Sun.

We started with a lecture of Yossi Cohen from DSP-IP, that talked about Mobile VoIP technology and Mobile VoIP business models (lecture can be found ). After the lecture we had a panel with Tzahi Efrat from Jajah, Roy Timor-Rousso from Fring and Oded Goldenberg from Skuku that presented the VoIP companies and Yossi Hasson from BlueRun that presented a venture capital company. Having Jajah and Fring at the same table, makes you feel that Truphone are missing. although Truphone wanted to be at this Mobile Monday VoIP event, they could not make it. lucky us, James Tagg and James Body from Truphone were in Israel prior to the Mobile VoIP MoMo Event, and James Tagg answered the same questions on video. The video was filmed by James Body with my home camera at Jajah’s offices and I was asking the questions. I apologize for the bad quality

We had an interesting discussion on how mobile VoIP companies make their revenue, relations with operators and the future of mobile VoIP. It was intersting to know, that JAJAH, Skuku and Truphone make money, but Fring do not make money AND do not intended of making money. they have money from their VC. We had Yossi from BlueRun answer what is the reason for investing in a company that does not have any revenue. Does this mean that Fring will keep on receiving more and more founding from investors or at some point they will finish all their money and will have to close?

We had fun, interest, new acquaintances, drinks and blue shot glasses!

We are planing the next MoMo TLV event and looking for the next air conditioned location…if you have any suggestions, please email me!

See you in the next MoMo TLV event!