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From Tony Anecito <adanec...@yahoo.com>
Subject Re: Tomcat performance questions
Date Wed, 14 Nov 2007 22:14:50 GMT
Actually I just saw some reports on the new quad intel
45nm processors and they are much faster than 15msec.

To justify new hardware and predict scalability
Capacity Planning groups have to show the before/after
performance.

I have seen web apps operate in the 4msec range on
comercial servlet containers.

I am trying to show a fortune 50 company that Tomcat
is fast and a viable replacement that can scale. But
the commercial product does have microsecond
resolution in its logs.

I have measured the System.currentTimeNanos() and
found it to be down below 1usec execute time so not
sure what you are thinking.

Hope that helps.

-Tony


--- Filip Hanik - Dev Lists <devlists@hanik.com>
wrote:

> Tony Anecito wrote:
> > Hi All,
> >
> > I am using Tomcat 6.0.14 with java 1.6.0_02 on
> Windows
> > 2000 professional.
> >
> > I am wondering what is the best parser to use for
> this
> > configuration? The one with java 1.6.0_02?
> >   
> for XML?
> the Sun JRE implements the Xerces and Xalan parsers,
> so it would be the 
> same as if you used those.
> > Also, what is the best way to monitor performance?
> I
> > am using the logs and they are only 15msec
> resolution.
> > I am surprised the Tomcat design uses timers with
> that
> > resolution even when microsecond resoltion is
> > advertised. Why not use the nanosecond timers that
> > were added with jvm 1.5+ ? Please add resolution
> to
> > 6.0.15.
> >   
>  From what I understand
> System.currentTimeMillis() - fast
> System.currentTimeNanos() - not as fast, and we
> don't need that granularity
> > Regards,
> > -Tony
> >
> >
> >      
>
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