Groups > comp.lang.java.programmer > #36547

Re: Jigsaw

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From	j4n bur53 <janburse@fastmail.fm>
Newsgroups	comp.lang.java.programmer
Subject	Re: Jigsaw
Date	Fri, 28 Apr 2017 00:52:33 +0200
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By a quick chekk I dont find any tickets on the internet
discussing slow application performance of JDK 9.

But a couple of discussions about slow compilation
performance. But I guess the two are related,

the compiler is just another application.

j4n bur53 schrieb:
> Still performance issue:
>
> JDK 8: Total    in 5994    (44 gc) ms
> JDK 9: Total    in 9668    (16 gc) ms
>
> Versions used:
>
> java version "1.8.0_131"
> Java(TM) SE Runtime Environment (build 1.8.0_131-b11)
> Java HotSpot(TM) 64-Bit Server VM (build 25.131-b11, mixed mode)
>
> java version "9-ea"
> Java(TM) SE Runtime Environment (build 9-ea+167)
> Java HotSpot(TM) 64-Bit Server VM (build 9-ea+167, mixed mode)
>
> j4n bur53 schrieb:
>> My first experience with JDK 9:
>>
>> The following code didn't work anymore:
>>
>>         if (UIManager.getLookAndFeel() instanceof WindowsLookAndFeel) {
>>
>> On a windows machine it barked that I am not allowed
>> to access the class WindowsLookAndFeel.
>>
>> I did the following workaround:
>>
>>         if (LAF_ID.equals(UIManager.getLookAndFeel().getID())) {
>>
>> I have mixed feelings towards JDK 9. It also
>> run 50% slower than JDK 8. I was running my usual
>> benchmark all of them were significantly slower.
>>
>> I did these tests 2-3 months ago, maybe the
>> performance problem is now fixed. Dunno.
>>
>> Stefan Ram schrieb:
>>>   No, my post is not about Scott Stark's blog entry,
>>>   but rather about this sentence:
>>>
>>>       »The previously monolithic runtime library rt.jar is
>>>       now split up in Java 9.«
>>>       ¯¯¯¯¯¯¯¯¯¯¯¯
>>>   Didn't I hear that some years before? Wait!
>>>   Yes - here it is:
>>>
>>>       »Java SE 6 Update 10 consists of several technologies
>>>       that improve the user experience related to installing
>>>       the JRE, and to deploying and running rich-client Java
>>>       (and JavaFX) programs: · Java Kernel Online Installer
>>>       - The JRE is now divided into small bundles.«.
>>>                    ¯¯¯¯¯¯¯¯¯¯¯
>>>
>>
>

Thread

Re: Jigsaw j4n bur53 <janburse@fastmail.fm> - 2017-04-28 00:26 +0200
  Re: Jigsaw j4n bur53 <janburse@fastmail.fm> - 2017-04-28 00:43 +0200
    Re: Jigsaw j4n bur53 <janburse@fastmail.fm> - 2017-04-28 00:52 +0200
    Re: Jigsaw Arne Vajhøj <arne@vajhoej.dk> - 2017-04-27 21:27 -0400
      Re: Jigsaw j4n bur53 <janburse@fastmail.fm> - 2017-04-28 12:30 +0200
        Re: Jigsaw Arne Vajhøj <arne@vajhoej.dk> - 2017-04-28 08:18 -0400
      Re: Jigsaw v_borchert@despammed.com (Volker Borchert) - 2017-04-28 20:01 +0000
        Re: Jigsaw Arne Vajhøj <arne@vajhoej.dk> - 2017-04-28 19:20 -0400
  Re: Jigsaw Arne Vajhøj <arne@vajhoej.dk> - 2017-04-27 21:07 -0400

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