Re: [Simpleweb-Support] Asynchronous Http Service Complete Example
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Re: [Simpleweb-Support] Asynchronous Http Service Complete Example
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From: rayhan <sav...@gm...> - 2009-06-09 10:55:58
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Thx for your reply.
I've attached ThreadDumper output and ApplicationMonitor output for
you analysis. Regarding netstat, what information you would like to
know? For the start, here is general netstat you may want to know:
2584 #> netstat -an | grep 28102 | grep ESTABLISH | wc -l
2043
2591 #> netstat -an | grep 28102 | grep CLOSE_WAIT | wc -l
1288
2592 #> netstat -an | grep 28102 | grep TIME_WAIT | wc -l
0
2589 #> lsof -p 26736 | grep ESTABLISHED | wc -l
1022
28102 is my application listening port, and 26736 is my PID.
I'm looking forward for your assistance. thx :)
On Tue, Jun 9, 2009 at 3:47 PM, Niall
Gallagher<gal...@ya...> wrote:
>
> Hi,
>
> I would need a thread dump and output from netstat to determine what is wrong with your application. With regard to stress tests I have tested Simple with at least 100 million requests using ApacheBench. Also I have tested with HttpClient, Faban and my own stress tester, again the tests involved millions of requests without any issues. Take a look at the following tools which can help grab the informataion.
>
> For thread dumps:
> http://svn.sourceforge.net/viewvc/simpleweb/trunk/src/test/java/org/simpleframework/http/core/ThreadDumper.java?revision=1448&view=markup
>
> For general stats:
> http://svn.sourceforge.net/viewvc/simpleweb/trunk/src/location/java/org/simpleframework/location/ApplicationMonitor.java?revision=1448&view=markup
>
> Regards,
> Niall
>
>
>
>
> --- On Tue, 6/9/09, rayhan <sav...@gm...> wrote:
>
>> From: rayhan <sav...@gm...>
>> Subject: Re: [Simpleweb-Support] Asynchronous Http Service Complete Example
>> To: "Simple support and user issues" <sim...@li...>
>> Date: Tuesday, June 9, 2009, 12:51 AM
>> Thanx for your response. I already
>> implement the asynchronous model of
>> HTTP response and it works magic :)
>>
>> However, recently did load/stress test my application that
>> uses
>> simpleframework http listener. I'm using httperf load
>> tester. I set
>> load test traffic with 500 tps, and the application
>> responded well
>> initially.
>>
>> But after 30 minutes test, the application cannot receive
>> more
>> traffic. I try to hit one traffic manually using telnet,
>> it's
>> connected but not responding. I try to count established
>> connection /
>> file handlers using this command:
>>
>> lsof -p 26120 | wc -l
>> 1663
>>
>> There's 1663 establish connection. Something's wrong here
>> ..
>>
>> I'm using both simple 4.1.11 and 4.1.10.
>>
>> Then I search mailinglist archive, and found similar
>> problem regarding
>> file handler. I try to switch back to 4.1.9, and it works
>> well
>> initially, for an hour collapse again.
>>
>> Any advice? Maybe there is something wrong in my
>> application? FYI,
>> always closed every response object per request
>>
>> On Mon, Jun 8, 2009 at 3:41 PM, <Nia...@ub...>
>> wrote:
>> > Hi,
>> >
>> > Yes its very simple. There are no restrictions on how
>> to process
>> > requests asynchronously. For example try this.
>> >
>> > public void handle(final Request req, final Response
>> resp) {
>> > new Thread(new Runnable() {
>> > public void run() {
>> > try {
>> > PrintStream out =
>> resp.getPrintStream();
>> > resp.set("Content-Type",
>> "text/html");
>> > out.println("Hello World!);
>> > out.close(); // commits and sends
>> response
>> > }catch(Exception e) {
>> > e.printStackTrace();
>> > }
>> > }
>> > }).start();
>> > }
>> >
>> > For simple the closure of the Response object or the
>> OutputStream is
>> > what completes the response. So you can pass the
>> response object to an
>> > asynchronous thread without any issues. Hope this
>> helps.
>> >
>> > Niall
>> >
>> > -----Original Message-----
>> > From: rayhan [mailto:sav...@gm...]
>> > Sent: 08 June 2009 05:54
>> > To: sim...@li...
>> > Subject: [Simpleweb-Support] Asynchronous Http Service
>> Complete Example
>> >
>> > Hello All :)
>> >
>> > I recently joined this mailinglist, and I curious to
>> know how to
>> > correctly asynchronous service using simpleframework.
>> I already the saw
>> > the tutorial in
>> > http://www.simpleframework.org/doc/tutorial/tutorial.php#async,
>> but I
>> > thinks it's not complete. Does anyone has complete
>> working example on
>> > how to use it? I need asynchronous services badly :)
>> >
>> > Thx for your help
>> >
>> > --
>> > -- # SC -#
>> >
>> >
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