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Groups > comp.lang.java.programmer > #36551

Re: Jigsaw

From Arne Vajhøj <arne@vajhoej.dk>
Newsgroups comp.lang.java.programmer
Subject Re: Jigsaw
Date 2017-04-28 08:18 -0400
Organization Aioe.org NNTP Server
Message-ID <odvbvh$d5k$1@gioia.aioe.org> (permalink)
References <jigsaw-20170421020552@ram.dialup.fu-berlin.de> <odtr73$428$1@news.albasani.net> <odts5i$eo$1@news.albasani.net> <odu5pe$ile$1@gioia.aioe.org> <odv5k9$vfl$1@news.albasani.net>

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On 4/28/2017 6:30 AM, j4n bur53 wrote:
> Arne Vajhøj schrieb:
>> On 4/27/2017 6:43 PM, j4n bur53 wrote:
>>> JDK 8: Total    in 5994    (44 gc) ms
>>> JDK 9: Total    in 9668    (16 gc) ms
>> That is a huge difference.
>>
>> I don't see such a big difference when I do my benchmark.
 >
> Maybe a problem with GC throughput,
>
> the faster JDK does 4 times more GC.
>
> I am testing on a 8-core machine.

Could be. My benchmark is compute intensive but
not so much GC intensive.

Sorry to ask, but are you tests using the same GC?

(if I remember correct then the default in 8 is
parallel and the default in 9 is G1)

Arne

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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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