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From "Oleksandr Alesinskyy (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HTTPCLIENT-925) HttpClient 4.0.1 is approx. 3 time slower then older 3.1 when works against www.google.com
Date Sun, 07 Mar 2010 13:05:27 GMT

    [ https://issues.apache.org/jira/browse/HTTPCLIENT-925?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12842423#action_12842423
] 

Oleksandr Alesinskyy commented on HTTPCLIENT-925:
-------------------------------------------------

It is a part of the equation - but not all of it. Namely, after changing of the user agent
in the 4.0.1 benchmark

        DefaultHttpClient httpclient = new DefaultHttpClient(params);
        // Reset user agent to the 3.1 value
        HttpProtocolParams.setUserAgent(params, 
                "Jakarta Commons-HttpClient");

Response sizes become (almost) identical but the performance difference persists (tests have
been executed  practically at the same time):

*3.1*
Server Software:	gws

Document URI:		http://www.google.com
Document Length:	6861 bytes

Time taken for tests:	9.711 seconds
Complete requests:	100
Failed requests:	0
Content transferred:	686462 bytes
Requests per second:	10.2976 [#/sec] (mean)
Time per request:	97.11 [ms] (mean)

*4.0.1*
Server Software:	gws

Document URI:		http://www.google.com
Document Length:	6865 bytes

Time taken for tests:	34.789 seconds
Complete requests:	100
Failed requests:	0
Content transferred:	686482 bytes
Requests per second:	2.8744717 [#/sec] (mean)
Time per request:	347.89 [ms] (mean)

*run.bat*

for /L %%i in (1,1,10) do (
  java -cp .;* org/apache/http/client/benchmark/TestHttpClient4 http://www.google.com 100
2>&1 1>>4_
  java -cp .;* org/apache/http/client/benchmark/TestHttpClient3 http://www.google.com 100
2>&1 1>>3_
)


> HttpClient 4.0.1 is approx. 3 time slower then older 3.1 when works against www.google.com
> ------------------------------------------------------------------------------------------
>
>                 Key: HTTPCLIENT-925
>                 URL: https://issues.apache.org/jira/browse/HTTPCLIENT-925
>             Project: HttpComponents HttpClient
>          Issue Type: Improvement
>            Reporter: Oleksandr Alesinskyy
>            Priority: Minor
>         Attachments: google.zip
>
>
> I have tried  benchmarks from httpclient-benchmark - results are some what funny - while
for most tried sites 4.0.1 is marginally faster then 3.1, for a couple of sites it is significantly
slower, the most noticeable for www.google.com, test were repeated multiple times, here are
sample output from 4.0.1 and 3..1  
> *4.0.1*
> Server Software:	gws
> Document URI:		http://www.google.com
> Document Length:	8459 bytes
> Time taken for tests:	3.952 seconds
> Complete requests:	10
> Failed requests:	0
> Content transferred:	84524 bytes
> Requests per second:	2.5303645 [#/sec] (mean)
> Time per request:	395.2 [ms] (mean)
> *3.1*
> Server Software:	gws
> Document URI:		http://www.google.com
> Document Length:	6847 bytes
> Time taken for tests:	1.354 seconds
> Complete requests:	10
> Failed requests:	0
> Content transferred:	68488 bytes
> Requests per second:	7.3855247 [#/sec] (mean)
> Time per request:	135.4 [ms] (mean)
> It is interesting, why.

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