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https://issues.apache.org/jira/browse/HTTPCLIENT-925?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12842383#action_12842383
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Oleksandr Alesinskyy commented on HTTPCLIENT-925:
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(1) "Performance benchmarks against public web sites are utterly pointless for
many reasons. For one, they cannot be reliable as most of the time you end up
measuring performance of your internet link anyhow and not that of the HTTP
stack. "
They are absolutely pointless for the absolute values, but are not so much
pointless for side-by-side comparisons (when compared stacks are run at the
same time.
In this case I have run each test many times, looping a pair (TestHttpClient3,
TestHttpClient4). Results were consistent.. So some real difference likely to
exists.
(2) "10 requests statistically are not enough "
I agree that 10 requests are statistically insignificant, but I have clearly
pointed that it is "a sample output". Behavior with 100 and 1000 requests is
the same.
(3) That's true - and not only for the google, and it is the most interesting
part - what is so different in requests created by 4.0.1 and 3.1.
> 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
>
> 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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