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From Oleg Kalnichevski <ol...@apache.org>
Subject Re: Performance
Date Fri, 26 Oct 2007 13:36:43 GMT

On Fri, 2007-10-26 at 15:12 +0200, Pascal S. de Kloe wrote:
> Hello Oleg,
> 
> 
> > (2) Can you give us a little more details regarding the performance
> > problems you have been observing?
> 
> The latencies they are experiencing are somewhere between 37 and 100 ms with 10
> threads doing 100 HTTP GET calls each. However once they move to a 100 threads
> with 1000 calls each the latencies go up from 1500 to 15000 ms!
> 
> I guess this has something to do with the extensive use of synchronized methods?
> 
> 
> > (3) Give us a little more details about your application. At the very
> > least what version of HttpClient is being used.
> 
> The application is a server doing lots of small HTTP GET requests with one of
> the latest 3.x versions.
> 
> > Just for the record, HttpClient 3.x codeline has numerous design issues
> > with its core components but I am not aware of anything that may lead to
> > "some serious performance problems"
> 
> For this server 40 ms is a serious performance problem. That's why I wanted to
> know how much performance tuning you'd like. ;)
> 

Pascal,

Just out of curiosity, do you have the stale connection check disabled,
which is known to cause major performance issues, when misused? 

Oleg


> 
> Thanks for your quick reply.
> 
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