users@grizzly.java.net

Re: Problems with pipelining requests

From: Patrick Julien <pjulien_at_gmail.com>
Date: Tue, 16 Dec 2008 18:08:08 -0500

yes

On Tue, Dec 16, 2008 at 6:07 PM, Jeanfrancois Arcand
<Jeanfrancois.Arcand_at_sun.com> wrote:
>
>
> 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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>>>>>>>>>
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>>>>>
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>>>
>>>
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>>>
>>
>>
>>
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