Tag Archives: performance

SCARY Performance! – record.hashCode() | Head Crashing Informatics 61

Posted on 17. September 2022 by Markus Karg

`record` is a cool and comfortable keyword in #Java, as it does a lot of things for you. But is the resulting code really FAST? This video reveals SCARY performance! If you like this video, please give it a thumbs … Continue reading →

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I DOUBLED InputStream Performance! | The Two Minutes Tuesday 029 | Java Inside

Posted on 3. August 2021 by Markus Karg

I was asked how far my contribution to #OpenJDK is: While I am still working on edge cases, performance of InputStream::transferTo is already doubled (!!!) and I think that in one of my next videos I can show you the … Continue reading →

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Boosting InputStream::transferTo Performance | The Two Minutes Tuesday 025 | Java Inside

Posted on 8. June 2021 by Markus Karg

As I explained in a recent video (https://youtu.be/qgDfZgreN40), InputStream::transferTo() is the most comfortable way to tell java we want to transfer the remaining content of one stream into another stream, but that it apparently is the slowest one, too! The … Continue reading →

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Java File I/O Performance Shootout | Modern Java | Head Crashing Informatics 32

Posted on 29. May 2021 by Markus Karg

Java’s way to access files changed a lot in past generations, and as files play an essential role in many #Java applications, it is time to look into the #Performance of the different API’s available for #FileIO: How does good … Continue reading →

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Stuttering Performance! | The Two Minutes Tuesday 024 | Informatics

Posted on 25. May 2021 by Markus Karg

Ever wondered why #performance is not scaling linear, but more like in steps? This episode of #TheTwoMinutesThuesday explains why! Watching your computer copying large files you will notice that the overall progress is everything but smooth nor linear! Some data … Continue reading →

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Migration Path to JDK 16 | The Two Minutes Tuesday 020 | Modern Java

Posted on 30. March 2021 by Markus Karg

Migrate to #JDK16 NOW! #Java 16 is here since last week, and there is no excuse to stay with any older versions! There is a simple four-steps migration path to more speed, more performance, more fun! If you like this … Continue reading →

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Java Performance Shootout: Foreign Linker vs JNI | Modern Java | JDK16 | Head Crashing Informatics 28

Posted on 27. February 2021 by Markus Karg

Hey guys! How’s it going? The #ForeignLinkerAPI, which is in incubation in #JDK16, was announced to be as fast as, OR EVEN FASTER AS, #JNI (#JavaNativeInterface, the sole OFFICIAL way to call native code from Java). But how looks the … Continue reading →

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Java Startup Performance

Posted on 3. October 2020 by Markus Karg

Hey guys! How’s it going? One of the major pain points even with the latest Java generation is its terribly slow startup time. There are things that you can do to improve it, so here is how to do them … Continue reading →

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You lose out Performance! – The Two Minutes Tuesday 004

Posted on 18. August 2020 by Markus Karg

Hey guys! You’re still using years-old Java versions? Then you definitively lose out performance! CU!

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CompletableFuture in I/O-bound applications

Posted on 20. July 2015 by Markus Karg

Hardware access needs long time Applying reactive programming to improve performance by utilizing all CPU cores became rather easy with Java 8 thanks to CompletableFuture. This is nice when an application is mostly CPU-bound, i. e. when it performs in-memory operations. But … Continue reading →

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