[Wrapper-user] Re: Services Performance...

[Leif M. <le...@ta...>]

Elhanan,
    Please post tot the Wrapper users list rather than to me directly.  
This lets others
answer your questions and makes the mail searchable so others can learn 
from it in the
future.
 
אלחנן מעיין wrote:

> Hi.. after running our java program on it's normal mode and running it 
> as a service we noticed there is a difference in performance between 
> the two (the first takes around 2-3 seconds, and as a service takes 8 
> seconds) any ideas on what's creating the laaag?
>
    I am going to need more information to be able to give you any 
useful answers.
When is the service being run?  At startup?  Is it possible that the 
service is competing for
system resources etc?

    The only difference in performance that I am aware of is actually 
the other way around.
If an application sends large quantities of output to stdout then the 
Wrapper, and a
standalone JVM for that matter, sends all of that information to the 
console.  Windows
is pretty slow in the way it displays text in a command window and 
quickly becomes a
bottle neck as it tries to paint all of the text, in graphics mode, in 
real time.
    When running as a service, there is no console so all of that output 
is just thrown away.
In both cases, writing to a log file is very fast.

    Could you try enabling debug output and run a single run in Console 
mode and then
again as a Service.  By comparing the timestamps in the log files it may 
become obvious
if a particular action is taking a lot of time or if the application is 
in general running slower
as a service.
    I have not seen this behavior but I'll do a few tests to get some 
numbers.

Cheers,
Leif

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