users@grizzly.java.net

Re: Problems with pipelining requests

From: Jeanfrancois Arcand <Jeanfrancois.Arcand_at_Sun.COM>
Date: Tue, 16 Dec 2008 18:07:15 -0500

Patrick Julien wrote:
> you're sure about this installation procedure? I don't have to remove
> the jar (appserv-rt) file once it's unzipped?

No you unzip the patch, and add its content to the appserv-rt.jar. Is
that what you are doing?

>
> On Tue, Dec 16, 2008 at 6:02 PM, Patrick Julien <pjulien_at_gmail.com> wrote:
>> Yes, Glassfish. No comet.
>>
>> On Tue, Dec 16, 2008 at 5:19 PM, Jeanfrancois Arcand
>> <Jeanfrancois.Arcand_at_sun.com> wrote:
>>> Hum that strange as I added read logs. Another try, hopefully that one
>>> works. You are using GF as it is right? No Comet?
>>>
>>>
>>>
>>> Patrick Julien wrote:
>>>> Even with this drop, I do not see any bytes being printed in the log.
>>>>
>>>> On Tue, Dec 16, 2008 at 2:24 PM, Jeanfrancois Arcand
>>>> <Jeanfrancois.Arcand_at_sun.com> wrote:
>>>>> Oups again.
>>>>>
>>>>> Patrick Julien wrote:
>>>>>> This does not seem to be printing out bytes, you sure I have the right
>>>>>> package? Or did the procedure change from the first one?
>>>>>>
>>>>>> On Tue, Dec 16, 2008 at 1:54 PM, Jeanfrancois Arcand
>>>>>> <Jeanfrancois.Arcand_at_sun.com> wrote:
>>>>>>> Salut,
>>>>>>>
>>>>>>> Patrick Julien wrote:
>>>>>>>> OK, so here's the log, what's interesting here is that I can see that
>>>>>>>> there is an attempt to handle an OP_READ but that is followed
>>>>>>>> immediately by a socket close on the server.
>>>>>>> Looks like there was no bytes available to read. I'm attaching a new
>>>>>>> patch
>>>>>>> which will display the bytes read. maybe the client has trouble sending
>>>>>>> more
>>>>>>> data?
>>>>>>>
>>>>>>> A+
>>>>>>>
>>>>>>> -- jeanfrancoois
>>>>>>>
>>>>>>>
>>>>>>>> On Tue, Dec 16, 2008 at 11:56 AM, Jeanfrancois Arcand
>>>>>>>> <Jeanfrancois.Arcand_at_sun.com> wrote:
>>>>>>>>> My bad. Proper patch attached.
>>>>>>>>>
>>>>>>>>> -- Jeanfrancois
>>>>>>>>>
>>>>>>>>> Patrick Julien wrote:
>>>>>>>>>> You sure about these instructions? This jar file only contains a
>>>>>>>>>> META-INF directory.
>>>>>>>>>>
>>>>>>>>>> On Tue, Dec 16, 2008 at 11:10 AM, Jeanfrancois Arcand
>>>>>>>>>> <Jeanfrancois.Arcand_at_sun.com> wrote:
>>>>>>>>>>> Salut,
>>>>>>>>>>>
>>>>>>>>>>> I'm attaching the patch which add more logging (let's start with
>>>>>>>>>>> that
>>>>>>>>>>> one).
>>>>>>>>>>> Just do:
>>>>>>>>>>>
>>>>>>>>>>> % cd ${glassfish.home}/lib
>>>>>>>>>>> % unzip grizzly-1.0...
>>>>>>>>>>> % cp appserv-rt.jar appserv-rt.jar.org
>>>>>>>>>>> % jar uvf appserv-rt.jar com
>>>>>>>>>>>
>>>>>>>>>>> restart and execute your test.
>>>>>>>>>>>
>>>>>>>>>>> A+
>>>>>>>>>>>
>>>>>>>>>>> -- Jeanfrancois
>>>>>>>>>>>
>>>>>>>>>>> Jeanfrancois Arcand wrote:
>>>>>>>>>>>> Salut,
>>>>>>>>>>>>
>>>>>>>>>>>> Patrick Julien wrote:
>>>>>>>>>>>>> On Mon, Dec 15, 2008 at 3:32 PM, Jeanfrancois Arcand
>>>>>>>>>>>>> <Jeanfrancois.Arcand_at_sun.com> wrote:
>>>>>>>>>>>>>> Patrick Julien wrote:
>>>>>>>>>>>>>>>>> Add
>>>>>>>>>>>>>>>>> -Dcom.sun.enterprise.web.connector.grizzly.snoopEnabled=true
>>>>>>>>>>>>>>>>> and
>>>>>>>>>>>>>>>>> send
>>>>>>>>>>>>>>>>> the log here. But I doubt you will find http pipelining
>>>>>>>>>>>>>>>>> support
>>>>>>>>>>>>>>>>> with
>>>>>>>>>>>>>>>>> Tomcat
>>>>>>>>>>>>>>>>> (the parser code here is from them)...I think Jetty might
>>>>>>>>>>>>>>>>> work,
>>>>>>>>>>>>>>>>> but
>>>>>>>>>>>>>>>>> I'm
>>>>>>>>>>>>>>>>> clearly not sure....
>>>>>>>>>>>>>>> Wait a minute, that doesn't compute for me. Both glassfish and
>>>>>>>>>>>>>>> Tomcat
>>>>>>>>>>>>>>> documentation refer to pipelining via the
>>>>>>>>>>>>>>> "maxKeepAliveRequests"
>>>>>>>>>>>>>>> property.
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> You can see it in the documentation of Tomcat here:
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> http://tomcat.apache.org/tomcat-6.0-doc/config/http.html
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> and for glassfish, here:
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> http://docs.sun.com/app/docs/doc/820-4507/abhco?a=view
>>>>>>>>>>>>>> OK...http pipelining is not what I means :-) Http pipelining
>>>>>>>>>>>>>> usually
>>>>>>>>>>>>>> refer
>>>>>>>>>>>>>> to the ability to sent multiple requests without waiting for the
>>>>>>>>>>>>>> response.
>>>>>>>>>>>>>> So you can send R1,R2,R3 in one chunk and then wait for un
>>>>>>>>>>>>>> ordered
>>>>>>>>>>>>>> response.
>>>>>>>>>>>>>> I was under the impression you were talking about that behavior.
>>>>>>>>>>>>> Yes, this is what I am talking about. Send 10 requests, then
>>>>>>>>>>>>> start
>>>>>>>>>>>>> accepting responses.
>>>>>>>>>>>> OK then the links are not related.
>>>>>>>>>>>>
>>>>>>>>>>>>>> What you mean here based on the above link is the maximum number
>>>>>>>>>>>>>> of
>>>>>>>>>>>>>> requests
>>>>>>>>>>>>>> a client can do on an open connection. The client does R1, wait
>>>>>>>>>>>>>> for
>>>>>>>>>>>>>> Res1,
>>>>>>>>>>>>>> then Req2, wait for Req2, etc.
>>>>>>>>>>>>> No, I really mean sending multiple requests and getting back
>>>>>>>>>>>>> responses
>>>>>>>>>>>>> in one shot, if the documentation provided here means something
>>>>>>>>>>>>> different, than it most certainly fooled me.
>>>>>>>>>>>>>
>>>>>>>>>>>>>> Now I understand your issue. I think your request is invalid and
>>>>>>>>>>>>>> Grizzly
>>>>>>>>>>>>>> is
>>>>>>>>>>>>>> waiting for more bytes. Is the snippet you wrote previously
>>>>>>>>>>>>>> contains
>>>>>>>>>>>>>> the
>>>>>>>>>>>>>> entire request? I will try to reproduce the issue using that one
>>>>>>>>>>>>>> and
>>>>>>>>>>>>>> telnet.
>>>>>>>>>>>>> No, as I said before, I am getting 2 to 4 responses then nothing
>>>>>>>>>>>>> from
>>>>>>>>>>>>> the 10 requests. Just a long blocking read followed by a
>>>>>>>>>>>>> disconnect.
>>>>>>>>>>>> Ok let me instrument a patch for you to see what happening. I hope
>>>>>>>>>>>> I
>>>>>>>>>>>> don't
>>>>>>>>>>>> have to drive to see the problem live (at least not today as I
>>>>>>>>>>>> will
>>>>>>>>>>>> need
>>>>>>>>>>>> a
>>>>>>>>>>>> boat :-)). Gives me 1 hour or so.
>>>>>>>>>>>>
>>>>>>>>>>>> A+
>>>>>>>>>>>>
>>>>>>>>>>>> -- Jeanfrancois
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>>> A+
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> -- jeanfrancois
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
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>>
>>
>> --
>> http://www.spectrumdt.com
>> http://codepimps.org
>>
>
>
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