Groups > comp.lang.java.programmer > #3848

Re: JNA performance

From	Lew <noone@lewscanon.com>
Newsgroups	comp.lang.java.programmer
Subject	Re: JNA performance
Date	2011-05-09 08:36 -0400
Organization	albasani.net
Message-ID	<iq8n3d$9uv$2@news.albasani.net> (permalink)
References	<tqmdnUiqqro_tlvQnZ2dnUVZ_tmdnZ2d@westnet.com.au> <iq60hd$9i5$1@news.albasani.net> <jcjes6p6n24c0tksn6ivq6is7i8q30rd26@4ax.com>

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Roedy Green wrote:
> Lew wrote, quoted or indirectly quoted someone who said :
>
>>
>> Using JNA or JNI for performance is likely to be a fool's errand.  What is the
>> performance of your non-JNA approach?  How much better does it need to be?
>> Why do you think that calls to non-native libraries are the bottleneck?
>>
>> Also, where do you get the notion that JNA "sucks performance-wise"?  The JNA
>> folks claim that "some attention is paid to performance".  That indicates /a
>> priori/ that performance is likely not to "suck".  Therefore any conclusion
>> you made that they failed in that attention is based on measurement.  What
>> measurements did you perform, what were the results, and what do you need the
>> results to be?
>
> The implementors of JNA will use the same JNI interface you would.
> That's the bottleneck.  It is not as though the code is doing

So you have access to his performance test results to know where his 
bottleneck is?  Amazing.

I question whether the OP has a performance problem, not where it is.

-- 
Lew
Honi soit qui mal y pense.
http://upload.wikimedia.org/wikipedia/commons/c/cf/Friz.jpg

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JNA performance "Qu0ll" <Qu0llSixFour@gmail.com> - 2011-05-08 15:35 +1000
  Re: JNA performance Knute Johnson <nospam@knutejohnson.com> - 2011-05-07 22:48 -0700
    Re: JNA performance "Qu0ll" <Qu0llSixFour@gmail.com> - 2011-05-08 16:03 +1000
      Re: JNA performance Knute Johnson <nospam@knutejohnson.com> - 2011-05-08 09:54 -0700
    Re: JNA performance Steve Sobol <sjsobol@JustThe.net> - 2011-05-08 13:26 -0700
      Re: JNA performance "Qu0ll" <Qu0llSixFour@gmail.com> - 2011-05-09 08:44 +1000
        Re: JNA performance Jeff Higgins <jeff@invalid.invalid> - 2011-05-08 21:17 -0400
        Re: JNA performance Jeff Higgins <jeff@invalid.invalid> - 2011-05-08 21:20 -0400
          Re: JNA performance Jeff Higgins <jeff@invalid.invalid> - 2011-05-08 21:24 -0400
            Re: JNA performance "Qu0ll" <Qu0llSixFour@gmail.com> - 2011-05-09 13:39 +1000
              Re: JNA performance Steve Sobol <sjsobol@JustThe.net> - 2011-05-08 21:54 -0700
                Re: JNA performance "Qu0ll" <Qu0llSixFour@gmail.com> - 2011-05-09 15:47 +1000
                Re: JNA performance Steve Sobol <sjsobol@JustThe.net> - 2011-05-08 23:26 -0700
                Re: JNA performance "Qu0ll" <Qu0llSixFour@gmail.com> - 2011-05-09 17:07 +1000
                Re: JNA performance Steve Sobol <sjsobol@JustThe.net> - 2011-05-10 12:44 -0700
        Re: JNA performance Tom Anderson <twic@urchin.earth.li> - 2011-05-09 18:21 +0100
          Re: JNA performance Steve Sobol <sjsobol@JustThe.net> - 2011-05-09 13:05 -0700
            Re: JNA performance Tom Anderson <twic@urchin.earth.li> - 2011-05-09 21:09 +0100
              Re: JNA performance Steve Sobol <sjsobol@JustThe.net> - 2011-05-09 17:58 -0700
  Re: JNA performance Roedy Green <see_website@mindprod.com.invalid> - 2011-05-07 23:25 -0700
    Re: JNA performance "Qu0ll" <Qu0llSixFour@gmail.com> - 2011-05-08 16:32 +1000
    Re: JNA performance Steve Sobol <sjsobol@JustThe.net> - 2011-05-08 13:27 -0700
  Re: JNA performance Lew <noone@lewscanon.com> - 2011-05-08 07:58 -0400
    Re: JNA performance Roedy Green <see_website@mindprod.com.invalid> - 2011-05-08 19:17 -0700
      Re: JNA performance Lew <noone@lewscanon.com> - 2011-05-09 08:36 -0400
        Re: JNA performance Roedy Green <see_website@mindprod.com.invalid> - 2011-05-09 06:34 -0700
          Re: JNA performance Lew <noone@lewscanon.com> - 2011-05-09 09:57 -0400
  O/T: Tag lines, or sigs (Was: JNA performance) Lew <noone@lewscanon.com> - 2011-05-08 08:02 -0400
    Re: O/T: Tag lines, or sigs (Was: JNA performance) Arved Sandstrom <asandstrom3minus1@eastlink.ca> - 2011-05-08 11:24 -0300
      Re: O/T: Tag lines, or sigs (Was: JNA performance) Lew <noone@lewscanon.com> - 2011-05-08 12:35 -0400
        Re: O/T: Tag lines, or sigs (Was: JNA performance) Knute Johnson <nospam@knutejohnson.com> - 2011-05-08 09:54 -0700
      Re: Tag lines, or sigs (Was: JNA performance) "Qu0ll" <Qu0llSixFour@gmail.com> - 2011-05-09 03:37 +1000
      Re: O/T: Tag lines, or sigs (Was: JNA performance) Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-05-09 15:50 +1200
        Re: O/T: Tag lines, or sigs (Was: JNA performance) Lew <noone@lewscanon.com> - 2011-05-09 08:36 -0400
    Re: O/T: Tag lines, or sigs (Was: JNA performance) "Qu0ll" <Qu0llSixFour@gmail.com> - 2011-05-09 03:37 +1000
      Re: O/T: Tag lines, or sigs (Was: JNA performance) Daniele Futtorovic <da.futt.news@laposte-dot-net.invalid> - 2011-05-08 19:55 +0200
        Re: O/T: Tag lines, or sigs (Was: JNA performance) Martin Gregorie <martin@address-in-sig.invalid> - 2011-05-08 19:30 +0000
          Re: O/T: Tag lines, or sigs (Was: JNA performance) Steve Sobol <sjsobol@JustThe.net> - 2011-05-08 13:28 -0700
  Re: JNA performance Jim Janney <jjanney@shell.xmission.com> - 2011-05-09 08:54 -0600

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