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