10,000 Java performance tips over 15 years - what did I learn? by Jack Shirazi

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After writing "Java Performance Tuning" and founding JavaPerformanceTuning.com, I wrote a newsletter every month for the last 15 years. In that period I've listed at least 10,000 Java performance tips and hundreds of Java performance tools. Here's what I can tell you in under an hour about the most common issues and how to solve them.
Jack Shirazi - Head of Engineering for Nexmo, the Vonage API
Java Champion since 2005
Founder of javaperformancetuning.com
Author of Java Performance Tuning (O'Reilly)
Researched Black Hole Thermodynamics & Protein Structure Prediction

[@arunaravamudhan924]

Such an excellent and clear talk. I met Jack in a conference and he is a very down to earth and approachable person. Look forward to more such talks from him.

[@fatihsenturk649]

one of the great talk I've watched, I am gonna watch it again and I will take some notes to further searches.

[@kedarmhaswade]

Unbelievably clear talk. Thank you, Jack.

[@rydmerlin]

I love this guy as he really wants to share his knowledge and help people with these sorts of issues. I hope we can find his complete talk elsewhere.

[@karthickeayan]

searching for some talk like this for years.. finally found one!

[@nikiforovpizza]

Great video, thank you!

[@EvgeniyLyuty]

the amount of useful information per second -> infinity

[@diegoramos27]

wow this is gold, thank you

[@audi88]

Great talk!

[@king0s]

was very informative, makes you want more.. I just wanted to watch 5 minutes of this video, but ended up watching up to 42 minutes without realizing when he starts saying he only has time for two more slides, I was like is 45 min up already? Grateful for such minds.

[@wotwot6868]

Great talk. Learned a lot. Having knowledge on how the jvm works as well as database internals would nice a nice links as well.

[@joelo3004]

Great talk! Wonder is this presentation slides downloadable ? Thanks

[@ManuAnand79]

Did anyone find the JLobby report for Java Persistent options that Jack mentions @13.42 ??

[@RudhinMenon]

thanks, excellent talk, curious about how visualvm sampler can help

[@aseembansal]

Where can the presentation for this video be found? The speaker mentioned several times it's all in the presentation.

[@thunde7226]

awesome presentation............................thanks Jack Shirazi.......................:) ...........................bye

[@amritamisra1878]

Good explanation...

[@cooldudecs]

Brilliant!

[@joachimdietl6737]

I want to double thumbs up! What a nice guy! I think I know him from WWF Rage ;)

[@corabora6644]

Terrific presentation...superb explanations of basic & complex stuff. TY Jack ! One thing I didnt get was why the ref. to RMI...isnt it defunct ? And why on earth 10,000 in the title ??

[@samuelh5]

Amazing. Unless "amazing" means "feeling overwhelmed as though lost in a maze." In which case this is the opposite of that. Unmazing.

[@87ravigoel]

This is gold

[@sauravdas7591]

can anybody help if there are notes on Java Performance the definitive guide

[@rameshbabuy9254]

where can we get the slides for this ?

[@ravipasumarthy8732]

Where can i download slides?

[@sciemk8723]

whats the reason for not using jvisualvm in production? performance overhead? data corruption?

[@Dimass036]

Their license forbidding to use it in production for free. Although VisualVM is bundled with a JDK, you can use it for free only in development environment.

[@kedarmhaswade]

The most important reason is Visual VM is a sampling profiler with a "safepoint bias". What it reports as the "hot method" (which is _the_ purpose of a profiler) may be completely misleading and you may end up wondering what method in your code is actually slow.

[@kamalhm-dev]

I'm from the future, Java now has ZGC which achieves sub millisecond pause 🥳

[@StefanReich]

2:24 They put millions what into it?

[@IntimateMusicGK]

into having this site and infrastructure to be able to provide insanely short response times.

[@87ravigoel]

He is referring to engineering time

[@javaskull]

Is this slideshow available, you skipped over the part I cared about?

[@mehdimohammadi1623]

I did not get What does He means by "outliers" and "inliers"?

[@kedarmhaswade]

I think it just means the outliers are not likely to appear in your (and my) app. We are just writing typical apps and they are the inliers (a term that he means to be opposite of outlier). For us typical app developers, he discusses the things to focus on.

[@MrVamshikesetty]

Outliers are things which are hampering the performance of the application which are introduced by the outside happenings around the application which is not controlled by the application.

[@mirageman2]

I guess you need a bit of experience in garbage collection modification and all these tools and diagrams before you should watch this.

[@junaidanjum6307]

Brilliant !!!