myfaces-users mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Mike Kienenberger <mkien...@gmail.com>
Subject Re: JSF application very slow with HTTPS
Date Mon, 11 Apr 2011 16:27:26 GMT
Or you can go with something a lot simpler and start with the free
profiler provided in the H2Database jar.

import org.h2.util;
...
Profiler profiler = new Profiler();
profiler.startCollecting();
// application code
System.out.println(profiler.getTop(3));

http://www.h2database.com/html/performance.html#application_profiling

For my own use, I've pulled out the three relevant classes and removed
the unnecessary methods if you don't want to grab the entire package,
although that's really trivial to do as well.    It's about 350 lines
of code total.

On Mon, Apr 11, 2011 at 12:12 PM, Mark Struberg <struberg@yahoo.de> wrote:
> Ah sorry, have overread that:
>>> The time is spent in
>>> htmlTableRenderer.encodeInnerHtml
>
> I'd start the application with YourKit profiler and do some profiling.
>
> You can get a free yourkit test license (14 days I think) for evaluation.
>
> LieGrue,
> strub
>
> --- On Mon, 4/11/11, Michael Heinen <mhn4dev@googlemail.com> wrote:
>
>> From: Michael Heinen <mhn4dev@googlemail.com>
>> Subject: Re: JSF application very slow with HTTPS
>> To: "MyFaces Discussion" <users@myfaces.apache.org>
>> Date: Monday, April 11, 2011, 3:45 PM
>>   Fat? Well there is a lot of EL
>> in this table, nearly in all cells,
>> e.g. for column widths, values, styles etc.
>> The EL is always hitting backing beans, some with
>> additional map access.
>>
>> But the real problem is the poor HTTPS performance compared
>> to HTTP.
>> It should not be caused by the app and also not by JSF or
>> Tomcat of course.
>> There should be a little overhead for additional
>> handshaking, but not
>> for the rendering!
>> Could this be caused by a buffering whereever?
>>
>> Mark (or anybody else), did you compare your app with http
>> and https?
>> Just wondering whether this is a problem only in my app.
>>
>> Regards,
>> Michael
>>
>>
>>
>> Am 11.04.2011 17:27, schrieb Mark Struberg:
>> > Btw another question: 1s local response time? How fat
>> is this page?
>> >
>> > We have a really big page in production with 1400
>> lines in a dataTable - and it renders in 450 ms...
>> >
>> > How many back-and-forth requests do you see if you
>> open firebug?
>> > Do you have some EL involved which isn't hitting the
>> backing bean but directly goes into the database? Something
>> in this direction...
>> >
>> > LieGrue,
>> > strub
>> >
>> > --- On Mon, 4/11/11, Mike Kienenberger<mkienenb@gmail.com>
>> wrote:
>> >
>> >> From: Mike Kienenberger<mkienenb@gmail.com>
>> >> Subject: Re: JSF application very slow with HTTPS
>> >> To: "MyFaces Discussion"<users@myfaces.apache.org>
>> >> Cc: "Michael Heinen"<mhn4dev@googlemail.com>
>> >> Date: Monday, April 11, 2011, 2:20 PM
>> >> I also use
>> >> jetty-6.1.22.   My environment is
>> almost
>> >> identical to
>> >> yours, give or take a minor version number.
>> >>
>> >> On Mon, Apr 11, 2011 at 7:49 AM, Michael
>> Heinen<mhn4dev@googlemail.com>
>> >> wrote:
>> >>>   Hi,
>> >>>
>> >>> My JSF application is very slow via HTTPS.
>> >>> Some parts are 15 times slower compared to
>> HTTP
>> >>>
>> >>> I measured the response times of the xhtml
>> requests
>> >> with Fiddler (locally
>> >>> and over network)
>> >>>
>> >>> Result for a very large page (512 KB) with a
>> big
>> >> datatable without ajax
>> >>> usage:
>> >>> --  local access with HTTP:  1 sec
>> >>> --  local access with HTTPS: 15-16 sec
>> >>>
>> >>> Other pages are factor 2-4 slower, with or
>> without
>> >> ajax.
>> >>> The time is spent in
>> >> htmlTableRenderer.encodeInnerHtml. Data is of
>> course
>> >>> available, there is no additional backend
>> access.
>> >>>
>> >>> The simple download of xhtml files or other
>> files is
>> >> NOT (noticeable)
>> >>> slower.
>> >>> Other non JSF applications running on the same
>> servers
>> >> are also not slower
>> >>> with HTTPS.
>> >>>
>> >>> Before I start profiling:
>> >>> - Does anybody have an idea where I should
>> look at?
>> >>> - Are there any known JSF or webApp settings
>> that
>> >> influence https
>> >>> performance?
>> >>>
>> >>> Environment:
>> >>>   Facelets
>> >>>   myFaces 1.2.9
>> >>>   tomahawk12_1.1.10
>> >>>   richfaces 3.3.3
>> >>>   tomcat 6.0.29
>> >>>   jdk 1.6.0_23
>> >>>
>> >>> Regards,
>> >>> Michael
>> >>>
>>
>>
>

Mime
View raw message