Re: Performance and default parameters of 4.2 vs 4.3

[Tad Whitenight <ta...@gmail.com>]

Oleg,

Much thanks. I was able to track this down to HTTP entity decompression,
which is default behavior using the HttpClientBuilder API.
Thus anyone consuming compressed entities verbatim (e.g. for storage or
retransmission) should investigate the disableContentCompression option
when upgrading.

Thanks,
Tad


On Thu, Mar 13, 2014 at 8:26 AM, Oleg Kalnichevski <ol...@apache.org> wrote:

> On Wed, 2014-03-12 at 14:13 -0400, Tad Whitenight wrote:
> > When upgrading from HttpClient 4.2 to the new APIs (no deprecated use) in
> > 4.3 I'm observing a 25-30ms increase in average response latency. Anyone
> > else observe this or have configuration suggestions while upgrading? I
> see
> > that RequestConfig.isStaleConnectionCheckEnabled is enabled by default,
> but
> > this appears to be for good reason.
> >
>
> 4.3 performed better than 4.2 in my tests, albeit not by a great margin.
>
> > Were default client parameters reevaluated between 4.2 and 4.3 or have
> they
> > remained the same?
>
> Some obscure parameters were dropped in 4.3 but the defaults should have
> remained the same.
>
> > In 4.3 HttpClientBuilder makes it quite clear what the
> > default values are. In 4.2 HttpParams may have absent/unset values, which
> > requires looking elsewhere to determine the client behavior.
> >
> > Thanks,
> > Tad
>
> Have you tried using deprecated classes shipped with 4.3 instead of
> 4.2?
>
> Oleg
>
>
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Re: Performance and default parameters of 4.2 vs 4.3

[Oleg Kalnichevski <ol...@apache.org>]

On Thu, 2014-04-10 at 12:20 -0400, Tad Whitenight wrote:
> Oleg,
> 
> Much thanks. I was able to track this down to HTTP entity decompression,
> which is default behavior using the HttpClientBuilder API.
> Thus anyone consuming compressed entities verbatim (e.g. for storage or
> retransmission) should investigate the disableContentCompression option
> when upgrading.
> 
> Thanks,
> Tad
> 
> 

Tad,

This sounds like a known issue [1] fixed in 4.3.3. Are you using the
latest stable HC release?

Oleg

[1] https://issues.apache.org/jira/browse/HTTPCLIENT-1461

> On Thu, Mar 13, 2014 at 8:26 AM, Oleg Kalnichevski <ol...@apache.org> wrote:
> 
> > On Wed, 2014-03-12 at 14:13 -0400, Tad Whitenight wrote:
> > > When upgrading from HttpClient 4.2 to the new APIs (no deprecated use) in
> > > 4.3 I'm observing a 25-30ms increase in average response latency. Anyone
> > > else observe this or have configuration suggestions while upgrading? I
> > see
> > > that RequestConfig.isStaleConnectionCheckEnabled is enabled by default,
> > but
> > > this appears to be for good reason.
> > >
> >
> > 4.3 performed better than 4.2 in my tests, albeit not by a great margin.
> >
> > > Were default client parameters reevaluated between 4.2 and 4.3 or have
> > they
> > > remained the same?
> >
> > Some obscure parameters were dropped in 4.3 but the defaults should have
> > remained the same.
> >
> > > In 4.3 HttpClientBuilder makes it quite clear what the
> > > default values are. In 4.2 HttpParams may have absent/unset values, which
> > > requires looking elsewhere to determine the client behavior.
> > >
> > > Thanks,
> > > Tad
> >
> > Have you tried using deprecated classes shipped with 4.3 instead of
> > 4.2?
> >
> > Oleg
> >
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: httpclient-users-unsubscribe@hc.apache.org
> > For additional commands, e-mail: httpclient-users-help@hc.apache.org
> >
> >



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