[erlang-questions] Cowboy vs Misultin

[Tobias]

Andy,

Thanks for the hint! Lesson learned :)

I have removed the error_logger:info_msg calls.

Regards,
Tobias

On May 31, 2011, at 11:36 AM, Andy W. Song wrote:

> Too many prints. Can't go fast enough. 
> 
> On Tue, May 31, 2011 at 5:01 PM, Tobias <tobias.rodaebel@REDACTED> wrote:
> Hi Andy,
> 
> I'm kind of fresh to Erlang and wrote a standalone Web Socket server as a learning project. Just out of curiosity, would you mind to run your tests against my implementation just to get an idea if I'm on the right track?
> 
> https://github.com/rodaebel/ewsd
> 
> $ cd ewsd;
> $ make
> $ bin/ewsd
> 
> The default handler just echoes incoming Web Socket messages.
> 
> Thanks in advance,
> Tobias
> 
> On May 31, 2011, at 10:26 AM, Andy W. Song wrote:
> 
>> 1400+2 WebSocket packet size is OK. Packet rate stays the same. CPU usage goes up from 24% to 37%.
>> 
>> CPU usage proportion to packet size is not a good sign. handle_data() function will traverse the list to find 255, which is low efficient. Can it be improved?
>> 
>> Regards
>> Andy
>> 
>> On Tue, May 31, 2011 at 4:08 PM, Andy W. Song <wsongcn@REDACTED> wrote:
>> I guess Misultin's handle_data function has some problem if TCP packets are large, perhaps larger than ethernet MTU. 
>> 
>> If I use 1536+2 WebSocket packet size, I got follow error form Misultin(I fill up char 'M' with my packet):
>> 
>> http process <0.515.0> has died with reason: {function_clause,
>>                                               [{misultin_websocket,
>>                                                 handle_data,
>>                                                 ["MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM",
>>                                                  [],#Port<0.1012>,<0.516.0>,
>>                                                  http,true,<0.40.0>]},
>>                                                {misultin_websocket,connect,4},
>>                                                {misultin_http,handle_data,9}]}, removing from references of open connections
>> 
>> On Tue, May 31, 2011 at 2:18 PM, Andy W. Song <wsongcn@REDACTED> wrote:
>> I installed R14B03. 
>> 
>> I'm disappointed with my Erlang WebSocket client's performance.  So I wrote a C version using libev, code attached.
>> Usage:
>> ./new A B C
>> A/B/C have the same meaning of Erlang client.
>> 
>> Here is the result with my new client:
>> 
>> misultin_websocket_binary_example(file attached, no change to rest of Misultin)
>> start 519M
>> 3.5G
>> CPU,  with 550 Kbyte/s traffic about 23%.
>> 
>> misultin_websocket_example
>> start 519M
>> 3.5G
>> CPU, with 550 Kbyte/s traffic about 25%.
>> 
>> Packet size is 512 bytes, client sends packets, server echo.
>> 
>> Cowboy can't pass my test this time. Connections start dropping from 20K, don't know why. 
>> 
>> Regards
>> Andy
>> 
>> On Mon, May 30, 2011 at 10:20 PM, Roberto Ostinelli <roberto@REDACTED> wrote:
>> 2011/5/30 Andy W. Song <wsongcn@REDACTED>
>> Version 14.a-dfsg-3 is what comes with Debian stable. It's on my company machine which now doesn't have internet access anymore. 
>> 
>> Debian splits Erlang to a bunch of small packages. I may download a single Erlang/OTP package and install manually later on. 
>> 
>> Thanks
>> Andy
>> 
>> misultin has just been updated in the master branch [0.8-dev] to support binary mode.
>> 
>> i would be very interested if you could redo your tests using the binary example for websockets:
>> https://github.com/ostinelli/misultin/blob/master/examples/misultin_websocket_binary_example.erl
>> 
>> let's see if loic hit the spot :)
>> 
>> r. 
>> 
>> 
>> 
>> -- 
>> ---------------------------------------------------------------
>> 有志者，事竟成，破釜沉舟，百二秦关终属楚
>> 苦心人，天不负，卧薪尝胆，三千越甲可吞吴
>> 
>> 
>> 
>> 
>> -- 
>> ---------------------------------------------------------------
>> 有志者，事竟成，破釜沉舟，百二秦关终属楚
>> 苦心人，天不负，卧薪尝胆，三千越甲可吞吴
>> 
>> 
>> 
>> 
>> -- 
>> ---------------------------------------------------------------
>> 有志者，事竟成，破釜沉舟，百二秦关终属楚
>> 苦心人，天不负，卧薪尝胆，三千越甲可吞吴
>> 
>> _______________________________________________
>> erlang-questions mailing list
>> erlang-questions@REDACTED
>> http://erlang.org/mailman/listinfo/erlang-questions
> 
> 
> 
> 
> -- 
> ---------------------------------------------------------------
> 有志者，事竟成，破釜沉舟，百二秦关终属楚
> 苦心人，天不负，卧薪尝胆，三千越甲可吞吴
> 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://erlang.org/pipermail/erlang-questions/attachments/20110531/e7cd3f61/attachment.htm>