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From Milamber <milam...@apache.org>
Subject Re: Lots of CLOSE_WAIT with HC4 HTTP implementation
Date Wed, 21 Sep 2011 23:13:49 GMT


Le 21/09/2011 22:42, sebb a ecrit :
> On 21 September 2011 22:29, Milamber <milamber@apache.org> wrote:
>   
>> [snip]
>>
>> I make a tcp dump and analyze with wireshark.
>> With HC3.1 : 0-42 secs : 43 TCP conversations (inside several HTTP GET
>> and response)
>> With HC4.1 : 0-44 secs : 3011 TCP conversations (inside one HTTP GET and
>> one response)
>>     
> Do you mean that each HC4.1 conversation only contains a single
> request/response?
>   

Yes a single request/response

> Can you enable debug logging for HTTPHC4Impl ?
>   

Yes I can, I will sent the log in a private mail
see end of log : one user but lot of:
2011/09/22 01:06:56 DEBUG - jmeter.protocol.http.sampler.HTTPHC4Impl:
Thread Finished
2011/09/22 01:06:56 DEBUG - jmeter.protocol.http.sampler.HTTPHC4Impl:
Thread Finished


> This should show if the clients are being reused or not.
>
> I suggest you reduce thread and loop counts, or the log file will be very big.
>   

Done: 1 thread, 1 sec ramp up, 30 secs duration

Starting the test @ Thu Sep 22 01:06:25 CEST 2011 (1316646385910)
Waiting for possible shutdown message on port 4445
summary +   188 in   3,7s =   50,9/s Avg:    18 Min:     8 Max:   113
Err:     0 (0,00%)
summary +  1697 in  26,1s =   65,1/s Avg:    14 Min:     8 Max:   173
Err:     0 (0,00%)
summary =  1885 in  29,8s =   63,3/s Avg:    15 Min:     8 Max:   173
Err:     0 (0,00%)
Tidying up ...    @ Thu Sep 22 01:06:56 CEST 2011 (1316646416091)
... end of run



netstat -tplna| grep java | grep ESTA | wc -l
39 (esta conn)

==> 39 is the number of http requests in my test plan


> [I think we need to fix this before releasing 2.5.1]
>   


Yes sure.


>   
>> HTTP conversations show Keep-Alive header (HC3 and HC4)
>>
>> I suppose that is a close keep alive connection problem with JMeter.
>> Perhaps 2 issues are linked?
>>     
> Dunno yet.
>
>   


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