Not getting expected rate when running inside tomcat.

Here are my benchmark results for running as an application (direct
connections):
+++++++
Benchmark 'Benchmark http clients' results.
-------------------------------------------
Total time taken in milliseconds:
HttpClient 4.x: 234337
HttpCore 4.x: 199655
HttpURLConnection: 209033

Total bytes transfered: 10488590000

Benchmark: HttpURLConnection
Average transfer rate (bytes/second): 50176720

Benchmark: HttpCore 4.x
Average transfer rate (bytes/second): 52533572

Benchmark: HttpClient 4.x
Average transfer rate (bytes/second): 44758576
+++++++

Up to 52.5 MB/s using HttpCore. HttpClient being the slowest in this
case. This was doing 10000 connections each downloading a 1 MB static
file from Apache over a Gbit ethernet connection.

Through Tomcat I was topping 8mb/s using the current HttpCore layout.
But I'll let you know where the exact problem lies. I'm assuming it
has something to do with the way I am writing output to tomcat's
output stream. Tomcat can definitely handle super speeds as well (with
static files), so I'm sure there is a way to get this all be faster.

If you want the above benchmark code, you can get it .class and .java
in the following to jars:
http://quintin.dev.junkmail.co.za/httpclient/new/benchlib.jar
http://quintin.dev.junkmail.co.za/httpclient/new/benchhttp.jar

I use the following command to run it (also shows the versions of
httpclient/commons I'm using):
java -cp 
benchhttp.jar:benchlib.jar:libs/commons-codec-1.3.jar:libs/commons-logging-1.0.4.jar:libs/httpclient-4.0-alpha4.jar:libs/httpcore-4.0-beta1.jar:libs/httpcore-nio-4.0-beta1.jar:libs/httpmime-4.0-alpha4.jar
test.AppBench

Q

On Fri, Jun 13, 2008 at 11:23 AM, Oleg Kalnichevski <[EMAIL PROTECTED]> wrote:
> On Fri, 2008-06-13 at 10:18 +0200, Quintin Beukes wrote:
>> I'm doing ethernet. Localhost is also quite unpredictable, as it can
>> go too fast. Doing ethernet I know what the limits are, ie. 100mbit or
>> 1gbit.
>>
>> Eitherway, I setup some benchmarks and got very high troughputs. I
>> also spent some time figuring out HttpCore, so it's much faster than
>> all the others now.
>>
>> My question is then more of the sort, what could the reason for this
>> be? It's probably not HttpClient's fault though. Any ideas how I can
>> find the bottleneck?
>>
>
> I am not sure I understand the problem. Is it that HttpClient tends to
> be slower than HttpCore or that you are not getting the expected
> throughput rate when running HttpClient inside Tomcat?
>
> Oleg
>
>
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-- 
Quintin Beukes

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