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Re: [Jython-users] jython performance
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From: Chris C. <Chr...@ac...> - 2012-10-10 15:43:14
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I can't tell from the tenses used below if you are suggesting this as a possibility to explore or if this is something you've already done. Do you have demo code that shows this faster startup? It would be cool to take a look at it. Thanks, Chris On Wednesday 2012-10-10 08:41 (-0700), Olivier Rossel <oli...@gm...> wrote: > From my quick investigation, Jython takes an awful lot of time finding > classes and .py in the classpath and filesystem (trying many possible > locations). Plus it takes several seconds to parse the unicodeData.txt > file. > Stripping those two steps down makes Jython to launch much faster. > > My humble 2 cents. > > Envoyé de mon iPad > > Le 10 oct. 2012 à 08:55, Monmohan Singh <mon...@gm... > <mailto:mon...@gm...>> a écrit : > >> thanks for the summary. >> In Jython FAQ here >> http://www.jython.org/archive/22/userfaq.html#how-fast-is-jython, it >> says >> /"However, because of Java's slow startup time, Jython starts much >> more slowly (2.4 s) than CPython (80 ms). This means you don't want >> to do standard CGI in Jython, but long-running processes are fine."/ >> I guess that still holds true but should be largely dependent on the >> platform and the VM implementation. >> Regards >> Monmohan >> >> On Mon, Oct 8, 2012 at 6:16 PM, <cl...@br... >> <mailto:cl...@br...>> wrote: >> >> Dear colleagues, >> >> "Jython, a slow running Ferrari .." >> >> When I started with coding Jython in year 2006 I knew it was slow >> (its invoke took more than one second). >> >> Its hard to benchmark performance, as the user experience >> results from a mix of IT related processes, like CPU clock, >> memory cache, I/O performance, net performance and cryptography >> steps like the one used by the transport of SSL protocols. >> >> Sometimes less is more. A good example is that Jython runs on a >> slim JVM, which in case of IBM's CPUs runs a well tuned version >> of IBM Java 6 SE (or now at Java 7 SE), which are designed to >> make use of several hardware based accelerated features, mainly >> at the Power 7 and system z "mainframe" architecture. When I >> compare it now in year 2012, its likely that I see untuned JEE >> web components and compare it to lighter running, scripting based >> solutions developed under Jython & Java 6 EE. So what is my >> conclusion: As evolution moves forward, the processors use to >> increase its performance and double its capacity every year. Its >> good to correlate all factors and measure it from a user >> experience standpoint. >> >> I see a fast running Rolls-Royce that maps the Java EE world, I >> also see a slow running Ferrari that maps de Java & Jython >> servlets given the user an experience of no longer than 1 second >> response time, even for pythonic analytics. >> >> So in this analysis, which is not a scientific benchmark, my >> conclusion is that Jython, usually at a 2.5.2 production level, >> today does its job very well. >> >> Regards, >> Claude >> >> * >> Claude Falbriard >> Certified IT Specialist L2 - Middleware >> AMS Hortolândia / SP - Brazil >> phone: +55 19 9837 0789 <tel:%2B55%2019%209837%200789> >> cell: +55 13 8117 3316 <tel:%2B55%2013%208117%203316> >> e-mail: cl...@br... <mailto:cl...@br...> >> * >> >> >> From: Monmohan Singh <mon...@gm... >> <mailto:mon...@gm...>> >> To: Josh Juneau <jun...@gm... <mailto:jun...@gm...>> >> Cc: jyt...@li... >> <mailto:jyt...@li...> >> Date: 08/10/2012 01:11 >> Subject: Re: [Jython-users] jython performance >> ------------------------------------------------------------------------ >> >> >> >> thanks Josh. >> Seems pretty good. >> I did Google it and there were some reports about older versions >> of jython running 50x slower than cpython which seemed somewhat >> unreasonable to me. I was therefore looking for some authentic >> source about any recent performance comparisons, specifically >> jython 2.5.3+ >> >> Regards >> Monmohan >> >> On Sat, Oct 6, 2012 at 7:57 PM, Josh Juneau >> <_ju...@gm..._ <mailto:jun...@gm...>> wrote: >> Monmohan- >> >> I am not sure if there are any recent benchmarks, but if you >> Google "Jython Performance" then you should come up with a number >> of benchmarks from the past. Perhaps this is one of the most >> recent: >> _http://strattonbrazil.blogspot.com/2011/08/performance-gains-in-jython-252.html_ >> >> >> Best >> >> Josh Juneau_ >> __j...@gm..._ <mailto:jun...@gm...>_ >> __http://jj-blogger.blogspot.com_ <http://jj-blogger.blogspot.com/>_ >> __https://www.apress.com/index.php/author/author/view/id/1866_ >> >> >> >> >> On Fri, Oct 5, 2012 at 4:29 AM, Monmohan Singh >> <_mo...@gm..._ <mailto:mon...@gm...>> wrote: >> Hi, >> Are there any performance benchmarks available for jython vs. >> java and cpython? >> We are starting a new project where I would like to advocate use >> of jython for succinctness but would like to understand >> performance implications, if any. >> Appreciate any response. >> Regards >> Monmohan >> >> ------------------------------------------------------------------------------ >> Don't let slow site performance ruin your business. Deploy New >> Relic APM >> Deploy New Relic app performance management and know exactly >> what is happening inside your Ruby, Python, PHP, Java, and .NET app >> Try New Relic at no cost today and get our sweet Data Nerd shirt >> too!_ >> __http://p.sf.net/sfu/newrelic-dev2dev_ >> _______________________________________________ >> Jython-users mailing list_ >> __J...@li..._ >> <mailto:Jyt...@li...>_ >> __https://lists.sourceforge.net/lists/listinfo/jython-users_ >> >> >> ------------------------------------------------------------------------------ >> Don't let slow site performance ruin your business. Deploy New >> Relic APM >> Deploy New Relic app performance management and know exactly >> what is happening inside your Ruby, Python, PHP, Java, and .NET app >> Try New Relic at no cost today and get our sweet Data Nerd shirt too! >> http://p.sf.net/sfu/newrelic-dev2dev_______________________________________________ >> Jython-users mailing list >> Jyt...@li... >> <mailto:Jyt...@li...> >> https://lists.sourceforge.net/lists/listinfo/jython-users >> >> >> ------------------------------------------------------------------------------ >> Don't let slow site performance ruin your business. Deploy New Relic APM >> Deploy New Relic app performance management and know exactly >> what is happening inside your Ruby, Python, PHP, Java, and .NET app >> Try New Relic at no cost today and get our sweet Data Nerd shirt too! >> http://p.sf.net/sfu/newrelic-dev2dev >> _______________________________________________ >> Jython-users mailing list >> Jyt...@li... >> <mailto:Jyt...@li...> >> https://lists.sourceforge.net/lists/listinfo/jython-users > > > ------------------------------------------------------------------------------ > Don't let slow site performance ruin your business. Deploy New Relic APM > Deploy New Relic app performance management and know exactly > what is happening inside your Ruby, Python, PHP, Java, and .NET app > Try New Relic at no cost today and get our sweet Data Nerd shirt too! > http://p.sf.net/sfu/newrelic-dev2dev > > > _______________________________________________ > Jython-users mailing list > Jyt...@li... > https://lists.sourceforge.net/lists/listinfo/jython-users |