RE: Perl Profiler?
There is no magic in programming, just ones and zeros. but I am sure others have the same question as me... What the heck is a Profiler? Where have you seen one before? > -Original Message- > From: Jason Frisvold [mailto:[EMAIL PROTECTED]] > Sent: Monday, October 07, 2002 2:24 PM > To: beginners perl > Subject: Perl Profiler? > > > Does anyone know if there is a Perl Profiler (Open Source or > Commercial) > that is in existance? Apparently my boss thinks this will > magically fix > various issues... :) > > -- > --- > Jason 'XenoPhage' Frisvold > Senior ATM Engineer > Penteledata Engineering > [EMAIL PROTECTED] > RedHat Certified - RHCE # 807302349405893 > --- > "Something mysterious is formed, born in the silent void. > Waiting alone > and unmoving, it is at once still and yet in constant motion. > It is the > source of all programs. I do not know its name, so I will call it the > Tao of Programming." > > > -- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > The views and opinions expressed in this email message are the sender's own, and do not necessarily represent the views and opinions of Summit Systems Inc. -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Perl Profiler?
perldoc Devel::DProf It's a very useful and functional profiler (IMHO). George Jason Frisvold wrote: >Does anyone know if there is a Perl Profiler (Open Source or Commercial) >that is in existance? Apparently my boss thinks this will magically fix >various issues... :) > -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Perl Profiler?
Thanks, I'm looking into it now... :) We were specifically wondering if there was something that could count loops, count db calls, and related items like that ... It looks like this profiler will tell you the time spent in subroutines, but not more specifics? Of course, I need to do more reading on this ... looks like it may do a lot more than meets the eye ... :) Friz On Mon, 2002-10-07 at 14:31, George Schlossnagle wrote: > perldoc Devel::DProf > > It's a very useful and functional profiler (IMHO). > > George > > > Jason Frisvold wrote: > > >Does anyone know if there is a Perl Profiler (Open Source or Commercial) > >that is in existance? Apparently my boss thinks this will magically fix > >various issues... :) > > > > > -- --- Jason 'XenoPhage' Frisvold Senior ATM Engineer Penteledata Engineering [EMAIL PROTECTED] RedHat Certified - RHCE # 807302349405893 --- "Something mysterious is formed, born in the silent void. Waiting alone and unmoving, it is at once still and yet in constant motion. It is the source of all programs. I do not know its name, so I will call it the Tao of Programming." -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Perl Profiler?
A profiler is basically a program that watches another program run and outputs information on how long it ran, uses of variables, memory accesses, looping information, etc. It can be really helpful when you're trying to figure out where the bottleneck in a particular program is... It can also teach you to write tighter code since you learn from your mistakes :) Friz On Mon, 2002-10-07 at 14:26, Nikola Janceski wrote: > There is no magic in programming, just ones and zeros. > > but I am sure others have the same question as me... > > What the heck is a Profiler? Where have you seen one before? > > > -Original Message- > > From: Jason Frisvold [mailto:[EMAIL PROTECTED]] > > Sent: Monday, October 07, 2002 2:24 PM > > To: beginners perl > > Subject: Perl Profiler? > > > > > > Does anyone know if there is a Perl Profiler (Open Source or > > Commercial) > > that is in existance? Apparently my boss thinks this will > > magically fix > > various issues... :) > > > > -- > > --- > > Jason 'XenoPhage' Frisvold > > Senior ATM Engineer > > Penteledata Engineering > > [EMAIL PROTECTED] > > RedHat Certified - RHCE # 807302349405893 > > --- > > "Something mysterious is formed, born in the silent void. > > Waiting alone > > and unmoving, it is at once still and yet in constant motion. > > It is the > > source of all programs. I do not know its name, so I will call it the > > Tao of Programming." > > > > > > -- > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > The views and opinions expressed in this email message are the sender's > own, and do not necessarily represent the views and opinions of Summit > Systems Inc. > -- --- Jason 'XenoPhage' Frisvold Senior ATM Engineer Penteledata Engineering [EMAIL PROTECTED] RedHat Certified - RHCE # 807302349405893 --- "Something mysterious is formed, born in the silent void. Waiting alone and unmoving, it is at once still and yet in constant motion. It is the source of all programs. I do not know its name, so I will call it the Tao of Programming." -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Perl Profiler?
It can tell you all these things, you just need to massage it correctly, and know your app well enough to associate subroutine names with implementations. (you should read the man page for dprofpp as well, that's the DProf profile parser which allows you to interperet your trace files. For (potentially excessive) detail, use the -t option to get a compacted call tree. That combined with the summary statistics can give you a good feel for where time is being spent, and what the fow of the application is. One note of caution: DProf exects your application to exit naturally. If this is a daemonizing app that is not suppsoed to exit, you may want to wrap it so that it can run for a set period of time and then exit. Otherwise you may have probles with your statistics. George Jason Frisvold wrote: >Thanks, I'm looking into it now... :) > >We were specifically wondering if there was something that could count >loops, count db calls, and related items like that ... It looks like >this profiler will tell you the time spent in subroutines, but not more >specifics? Of course, I need to do more reading on this ... looks like >it may do a lot more than meets the eye ... :) > >Friz > >On Mon, 2002-10-07 at 14:31, George Schlossnagle wrote: > >>perldoc Devel::DProf >> >>It's a very useful and functional profiler (IMHO). >> >>George >> >> >>Jason Frisvold wrote: >> >>>Does anyone know if there is a Perl Profiler (Open Source or Commercial) >>>that is in existance? Apparently my boss thinks this will magically fix >>>various issues... :) >>> >> >> -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Perl Profiler?
On Monday, October 7, 2002, at 01:26 PM, Nikola Janceski wrote: > There is no magic in programming, just ones and zeros. Sure there is, in Perl especially! ;) magic - Technically speaking, any extra semantics attached to a variable such as $!, $0, %ENV, or %SIG, or to any tied variable. Magical things happen when you diddle those variables. (from Programming Perl's glossary) James -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Perl Profiler?
--- Jason Frisvold <[EMAIL PROTECTED]> wrote:
> Does anyone know if there is a Perl Profiler (Open Source or Commercial)
> that is in existance? Apparently my boss thinks this will magically fix
> various issues... :)
Perl has many tools for this. However, profiling tools are generally used to determine
performance issues. If performance is not a problem, they're not terribly relevant.
Assuming
that performance *is* a problem, here's a general strategy.
Use Devel::Dprof
This module allows you to know the execution time of a script and its subroutines.
Read 'perldoc
Devel::Dprof' and http://perlmonks.org/index.pl?node_id=101786 for more information.
When you have determined where you might get the most performance enhancements, you
can switch to
Devel::SmallProf to measure performance on a line-by-line basis.
Finally, when determining what code changes will gain you maximum benefit, using the
Benchmark
module will allow you to concretely demonstrate what *really* works. For some good
information on
using Benchmark, see http://perlmonks.org/index.pl?node_id=8745
Cheers,
Ovid
=
"Ovid" on http://www.perlmonks.org/
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Re: Perl Profiler?
On Mon, Oct 07, 2002 at 02:37:13PM -0400, Jason Frisvold wrote: > Thanks, I'm looking into it now... :) > > We were specifically wondering if there was something that could count > loops, count db calls, and related items like that ... It looks like > this profiler will tell you the time spent in subroutines, but not more > specifics? Of course, I need to do more reading on this ... looks like > it may do a lot more than meets the eye ... :) If you are not afraid of alpha code you could take a peek at Devel::Cover. Providing this information is not its primary purpose, but it might help. Or it might hinder ... > On Mon, 2002-10-07 at 14:31, George Schlossnagle wrote: > > perldoc Devel::DProf > > > > It's a very useful and functional profiler (IMHO). > > > > George > > > > > > Jason Frisvold wrote: > > > > >Does anyone know if there is a Perl Profiler (Open Source or Commercial) > > >that is in existance? Apparently my boss thinks this will magically fix > > >various issues... :) > > > > > > > > > > -- > --- > Jason 'XenoPhage' Frisvold > Senior ATM Engineer > Penteledata Engineering > [EMAIL PROTECTED] > RedHat Certified - RHCE # 807302349405893 > --- > "Something mysterious is formed, born in the silent void. Waiting alone > and unmoving, it is at once still and yet in constant motion. It is the > source of all programs. I do not know its name, so I will call it the > Tao of Programming." > > > -- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] -- Paul Johnson - [EMAIL PROTECTED] http://www.pjcj.net -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
