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Re: [rare-dev] any chance to bump jdk version to 21?


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  • From: mc36 <>
  • To: Alexander Gall <>, "" <>
  • Subject: Re: [rare-dev] any chance to bump jdk version to 21?
  • Date: Mon, 13 Feb 2023 15:58:39 +0100

and as it arrived before the soft-freeze planned to this spring, it'll be
available in debian-next-stable:

mc36@noti:~$ dpkg -l | grep openjdk-21
ii openjdk-21-demo 21~7ea-1
amd64 Java runtime based on OpenJDK (demos
and examples)
ii openjdk-21-doc 21~7ea-1
all OpenJDK Development Kit (JDK)
documentation
ii openjdk-21-jdk:amd64 21~7ea-1
amd64 OpenJDK Development Kit (JDK)
ii openjdk-21-jdk-headless:amd64 21~7ea-1
amd64 OpenJDK Development Kit (JDK)
(headless)
ii openjdk-21-jre:amd64 21~7ea-1
amd64 OpenJDK Java runtime, using Hotspot
JIT
ii openjdk-21-jre-headless:amd64 21~7ea-1
amd64 OpenJDK Java runtime, using Hotspot
JIT (headless)
ii openjdk-21-source 21~7ea-1
all OpenJDK Development Kit (JDK) source
files
mc36@noti:~$



On 2/13/23 13:33, mc36 wrote:
https://minborgsjavapot.blogspot.com/2023/02/jdk-21-image-performance-improvements.html

seemingly the under the hood technology could be very useful as this is the
most used functions in freerouter:

https://github.com/rare-freertr/freeRtr/blob/master/src/net/freertr/util/bits.java#L126

the idea would be to have this:

https://github.com/minborg/articles/tree/image-perf/2023/January/26-PerformanceImprovementsRevealed

look at those 2x performance boost on a generic x86-64...
wondering if we reduce the current 6 seconds full-bgp to 3 seconds? :)

thanks,
cs



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